University of Tehran

Graded Levels of Dietary Valine in Protein‐Restricted Diets: Effects on Reproductive Performance and Tissue Morphology in Laying Japanese Quail

BACKGROUND: Valine (Val) is an essential branched-chain amino acid that plays a critical role in protein synthesis and reproductive function in poultry. However, the optimal dietary Val requirement for laying Japanese quail fed reduced-protein diets remains insufficiently defined...

Hydrodynamic, sediment transport and water residence time changes in response to structural changes (Anzali Port–Wetland System)

Breakwaters are essential coastal structures for protecting ports, yet their modification can substantially alter hydrodynamics, sediment transport, and water renewal processes, especially in sensitive port–wetland systems. This study investigates the impacts of the new breakwate...

Agricultural interventions in developing-region smallholder systems: A harmonized outcome–metric meta-analysis of productivity, livelihood, and welfare outcomes

Agricultural interventions are central to smallholder productivity, livelihoods, and food-security policy in developing regions, but their evidence base is fragmented across outcomes, effect metrics, designs, and contexts. This study provides a quality-controlled, harmonized outc...

Predictors of academic self-efficacy in medical intern students: the roles of mindful eating, physical activity, sleep quality, and mental workload

Academic self-efficacy, defined as an individual’s belief in their capacity to complete academic tasks, may play a role in the learning and performance of medical students. Lifestyle factors such as sleep quality, physical activity, and mindfulness-based behaviors have been assoc...

Transcriptome analysis of damask rose (Rosa damascena Mill.) petals: unveiling the genetic basis of essential oil biosynthesis

Identifying the key genes and transcription factors involved in essential oil production in Rosa damascena is an important step toward understanding the molecular mechanisms underlying essential oil biosynthesis. Such knowledge may be applied in breeding programs aimed at improvi...

Parametric hydrodynamic and acoustic performance analysis of toroidal propellers with emphasis on geometric variations and advanced design optimization

Toroidal propellers, defined by their continuous closed-loop blade topology, offer promising potential for marine propulsion but remain insufficiently characterized through systematic geometric parametrization. This paper presents a numerical and experimental study of toroidal pr...

Evaluation of the effects of sesame-based emulgels with natural and synthetic antioxidants on the physicochemical quality attributes of fried chicken nuggets

Deep-fat frying of chicken nuggets generates harmful lipid oxidation products and excessive oil uptake, compromising nutritional quality. This study investigated sesame-based emulgels (1% or 7% w/w), with or without antioxidants (0.2% rosemary extract and 0.02% tert-butylhydroqui...

FOSTERING ORGANISATIONAL AMBIDEXTERITY THROUGH ABSORPTIVE CAPACITY: THE MEDIATING ROLE OF INNOVATION CULTURE

In the increasingly competitive landscape, organisations are emphasising absorptive capacity, innovation culture, and organisational ambidexterity to sustain their competitive edge. This research investigates how innovation culture serves as a mediating factor in the linkage betw...

Social justice and mental health: nonlinear impacts of poverty and income inequality in Iran

Mental disorders are a major contributor to the global burden of disease, and poverty and income inequality are widely recognized as key social determinants of these conditions. In Iran, mental disorders rank as the second leading cause of disease burden. However, the association...