Delving into the Latest Updates on Semnan University with Synapse

Overview

This study investigates the effect of SiO₂ nanoparticles on the rheol. and thermal behavior of soybean oil at 5-40°C, a low-temperature range of internal combustion engines.This investigation has been done for the concentrations of 0.05% to 1.0%.The results indicated that the dynamic viscosity reduced in all shear rates as the temperature rose.The significant change in the volume fraction′s viscosity was approx. 55% at 5°C from 0% to 1%.The maximum thermal conductivity coefficient obtained was 0.169 w/(m. K) at 30°C and 1.0% of volume fraction; indeed, it was 12% higher than that of the base oil.Statistical anal. has been performed with the Response Surface Method (RSM) using Design-Expert v.11.The dynamic viscosity behavior, which has been provided in a math. correlation with the adj-R² of 0.9997, suggested a high consistency between the exptl. and modeling output data.

31 Dec 2025·ASCE OPEN: Multidisciplinary Journal of Civil Engineering

Deep Ensemble Learning for Rapid Large-Scale Postearthquake Damage Assessment: Application to Satellite Images from the 2023 Türkiye Earthquakes

Author: Askan, Aysegul ; Askari, Mohammad ; Taciroglu, Ertugrul ; Heravi, Mohammad Ali ; Attarchian, Nahid ; Soleimani-Babakamali, Mohammad Hesam ; Sisman, Rafet ; Soleimani, Rojiar

01 Dec 2025·Molecular Biology Reports

Integrative study of various populations of Aporrectodea rosea (Savigny, 1826) based on morphological and molecular analyses (Oligochaeta: Lumbricidae)

Article

Author: Latif, Robabeh ; Roohi Aminjan, Atabak ; Poluboyarova, Tatiana V ; Shekhovtsov, Sergei V ; Malek, Masoumeh ; Briones, Maria J I

BACKGROUNDAporrectodea rosea (Savigny, 1826) is a common earthworm species found in the temperate regions of the Holarctic region. This species exhibits significant intraspecific variation, and several cryptic genetic lineages having been described. The high genetic diversity is likely due to its ecological plasticity and adaptability to different environmental conditions. Integrative approaches that combine morphological, ecological, and molecular data have proven to be useful in resolving taxonomic uncertainties in earthworm species. In this study, we investigated the genetic and morphological diversity of several populations of A. rosea from Iran. By combining molecular analyses with morphological and ecological data, we evaluated whether the observed diversity can be linked to phylogeographic origins (Eurosiberian vs. Mediterranean regions). This integrative approach provides new insights into the taxonomy and evolutionary history of A. rosea, contributing to a better understanding of earthworm biodiversity in the Holarctic region.METHODS AND RESULTSWe evaluated the molecular variation within A. rosea by analyzing both nuclear and mitochondrial markers. The phylogenetic results were combined with morphological data, ecological information, and genetic distances using the COI K2P method to assess species delimitations. Cluster analysis revealed the existence of two distinct morphotypes: a reddish morphotype associated with organic-rich, woodland habitats, and a pale morphotype found in drier grassland environments. Our molecular analyses involving sequencing the mitochondrial COI gene and the nuclear histone H3 gene confirmed the existence of two lineages within A. rosea: a Eurosiberian lineage and a Mediterranean lineage.CONCLUSIONSOur analyses confirmed that nearly all specimens collected from Iran fall within the two established lineages: Mediterranean and Eurosiberian. The observed genetic differences between the two morphotype samples can be related to their phylogeographic origins (Eurosiberian/Mediterranean).

100 Deals associated with Semnan University

Login to view more data

100 Translational Medicine associated with Semnan University

Login to view more data