Publications by authors named "A Rahnama"
Geopolymerization is a soil improvement technique widely used for waste management in recent years. This study explores the potential of geopolymerization for roadbed improvement using waste materials. Recycled glass powder (RGP) and calcium carbide residue (CCR) were investigated as precursors and alkaline activators, respectively, to enhance the properties of silty sand soil.
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- Future climate changes will lead to more extreme weather, negatively affecting crop yields and quality, particularly due to heat stress, which is less understood for grain quality.
- A study on safflower plants with different heat tolerances revealed that extreme heat reduced seed yield by 53-57% and altered fatty acid composition, with increases in saturated fatty acids and varying effects on unsaturated fatty acids over two years.
- Heat stress impacted the physicochemical properties of safflower oil more significantly than the fatty acid profile, showing that certain parameters fluctuated based on environmental conditions and genetic tolerance.
Algal growth depends strongly on phosphorus (P) as a key nutrient, underscoring the significance of monitoring P levels. Algal species display a sensitive response to fluctuations in P availability, notably through the expression of alkaline phosphatase (AP) when challenged with P-depletion. As such, alkaline phosphatase activity (APA) serves as a valuable metric for P availability, offering insights into how algae utilize and fix available P resources.
View Article and Find Full Text PDFKey Clinical Message: Parry-Romberg syndrome is characterized by progressive dystrophy in one half of the face, which usually begins in childhood. Correct and timely diagnosis of this disease, as well as a multidisciplinary approach and timely surgical treatment to minimize the psychological effects and improve the patient's appearance are of particular importance.
Abstract: Parry-Romberg syndrome is characterized by progressive dystrophy or loss of subcutaneous tissue in one half of the face, which usually begins in childhood and continues with skin changes, and can also be associated with linear scleroderma.
Serum Dehydroepiandrosterone sulfate (DHEA-S) level and its potential impact on immune responses and symptom severity after Oxford-AstraZeneca COVID-19 vaccination.
Int Immunopharmacol
May 2024
Background: Dehydroepiandrosterone sulfate (DHEA-S) has been associated with an immunomodulatory function. This study aims to explore the relationship between serum levels of DHEA-S and the immune responses triggered by the Oxford-AstraZeneca COVID-19 vaccine in individuals candidate for vaccination.
Methods: Serum levels of DHEA-S, cytokine release, antibody production and virus neutralization potential were assessed in 50 male and 50 female subjects before and 2 weeks after vaccination with Oxford-AstraZeneca COVID-19 vaccine.