Browsing by Author "Al-Saad, Khalid"
Now showing items 1-7 of 7
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Biophysical studies of the effect of high power ultrasound on the DNA solution
Ali, Mohamed H.M.; Al-Saad, Khalid A.; Ali, Carmen M. ( Elsevier B.V. , 2014 , Article)Stability and molecular size of the DNA double helical structure were studied on an aqueous solution of DNA after exposure to high power doses of continuous wave ultrasound at frequency of 20kHz. Thermal transition ... -
Collision/reaction cell ICP-MS with shielded torch and sector field ICP-MS for the simultaneous determination of selenium isotopes in biological matrices
Al-Saad, Khalid A.; Amr, Mohammed A.; Helal, Abdulfattah I. ( Humana Press Inc , 2011 , Article)The determinations of selenium isotopes in biological samples were performed using both inductively coupled plasma collision/reaction cell quadruple mass spectrometer (CRC-ICP-QMS) and inductively coupled plasma sector ... -
Investigation of Biochemical Alterations in Ischemic Stroke Using Fourier Transform Infrared Imaging Spectroscopy-A Preliminary Study.
Rakib, Fazle; Ali, Carmen M; Yousuf, Mohammed; Afifi, Mohammed; Bhatt, Pooja R; Ullah, Ehsan; Al-Saad, Khalid; Ali, Mohamed H M... more authors ... less authors ( MDPI , 2019 , Article)Brain damage, long-term disability and death are the dreadful consequences of ischemic stroke. It causes imbalance in the biochemical constituents that distorts the brain dynamics. Understanding the sub-cellular alterations ... -
A market basket survey of As, Zn and Se in rice imports in Qatar: Health implications
Candace, Rowell; Kuiper, Nora; Al-Saad, Khalid; Nriagu, Jerome; Shomar, Basem ( Elsevier , 2014 , Article)Qatar is dependent on importation of rice, its staple dish, and is therefore susceptible to compromises of food quality in the global market. This market basket study assesses potential health risks of As exposure from ... -
Mishandling and exposure of farm workers in Qatar to organophosphate pesticides
Shomar, Basem; Al-Saad, Khalid; Nriagu, Jerome ( Elsevier Inc. , 2014 , Article)We used a combination of subjective (questionnaire) and objective (urinary metabolites) measurements to evaluate factors that can predict the exposure of farm workers in Qatar to organophosphate pesticides and to assess ... -
Natural and depleted uranium in the topsoil of Qatar: Is it something to worry about?
Basem, Shomar; Amr, Mohamed; Al-Saad, Khalid; Mohieldeen, Yasir ( Elsevier , 2013 , Article)This study examines uranium in soils of Qatar to investigate whether there is any detectable traces of depleted uranium (DU). 409 soil samples were collected using a 10km grid system throughout the State of Qatar. The U ... -
Potato Peels as an Adsorbent for Heavy Metals from Aqueous Solutions: Eco-Structuring of a Green Adsorbent Operating Plackett-Burman Design
El-Azazy, Marwa; El-Shafie, Ahmed S.; Issa, Ahmed A.; Al-Sulaiti, Maetha; Al-Yafie, Jawaher; Shomar, Basem; Al-Saad, Khalid... more authors ... less authors ( Hindawi Limited , 2019 , Article)Treatment of wastewater is becoming a concern of an increasing prominence. Trace amounts of toxic metalloids and heavy metals (HMs) would contaminate large volumes of water. Being present as traces, removal of these ...