Persica qeshmensis gen. nov. sp. nov from the Persian Gulf (Platyhelminthes: Polycladida: Acotylea), with remarks on reproductive structures

A new genus of acotylean polyclad, Persica qeshmensis gen. nov. sp. nov. (Acotylea, Pleioplanidae), was collected from intertidal rocky shores of the Northern Persian Gulf, Iran. The genus Persica is established on the presence of small tentacles; tentacular and cerebral eyes; spermiducal bulbs; true seminal vesicle; prostatic vesicle of atomata-type; muscular coiled ejaculatory duct, provided with a stylet, absence of a vagina bulbosa or Lang's vesicle. Persica qeshmensis is characterised by a sandy beige to light brown background colour, with pale brown microdots, light grey ventral body surface, coiled ejaculatory duct embedded in parenchymatous cell mass, elongated sigmoid stylet, a well-developed penis sheath located in a small male atrium, and with a non-muscular blind chamber extending anteriad from the vagina to the level of the genital sucker.Fil: Maghsoudlou, Abdolvahab . University of Teheran. College of Science; IránFil: Bulnes, Verónica Natalia. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnológico Bahia Blanca. Instituto de Ciencias Biologicas y Biomedicas del Sur; ArgentinaFil: Rahimian, Hassan . University of Teheran. College of Science; Irá

Effects of Three Media Cultures on Quantitative and Qualitative Characteristics in Two Turf Grass Genera for Sod Production

Agricultural environments can be described by several different variables that include soil chemical, physical, and biological data (Mele and Crowley, 2008). Soil structure provides the essential framework which maintains the basic production at farming systems (Smith and Powlson, 2003). Soil responses vary for a number of reasons, such as variability in initial ecosystem conditions, diversity in agricultural methods, variability in the mix of crops and cropping intensity, and environmental sensitivity to alteration (varying resistance and resilience) (Homburg and Sandor, 2011). Application of compost in turf grass soils can affect dissolved organic C (DOC) levels which affects nutrient dynamics in soil such that the addition of compost in soil decreased NO3, increased P, and decreased soil pH relative to unamended soil (Wright et al. 2008). Furthermore, compost is a way to nourish roots and make a lawn stronger and greener. The aim of this study was to investigate the influence of various media cultures of soil, leaf and animal manure composts and mixes, on quantitative and qualitative characteristics of turf grass sodding

Drag coefficient of a rising bubble in a shear-thinning fluid using the power-law scheme coupled with a Cahn-Hilliard equation with a variable mobility: A lattice Boltzmann study and comparison with experiment

This study aims to investigate the behavior of multicomponent fluid flows consisting of Newtonian and non-Newtonian components, especially terminal velocity of a rising bubble in a power-law fluid. A recent lattice Boltzmann (LB) model is extended using power-law scheme to be able to simulate both Newtonian and non-Newtonian fluid flows at high density and viscosity ratios. Also, a variable mobility is introduced in this study to minimize the unphysical error around small bubbles in the domain. A three-component fluid flow system is examined using a constant and variable mobility. It is shown that each component has more stability using variable mobility while constant mobility causes interface dissipation, leading to mass loss gradually. In addition, two test cases including power-law fluid flows driven between two parallel plates are conducted to show the accuracy and capability of the model. To find a grid-independent computational domain, a grid independency test is carried out to show that a 200*400 domain size is suitable for our computations. Then, terminal velocity of a rising bubble is compared to an existing correlation in the literature, indicating that the results are in good agreement with existing study so that average relative error in six different cases is 5.66 %. Also, the simulated examples show good conformity to experimental results over a range of the Reynolds and Eotvos numbers

Assessing the ecological quality status of arid mangroves in the Gulf of Oman, Iran, using benthic indices of AMBI, M-AMBI, and BENTIX

Polychaetes are suitable indicators to evaluate the benthic ecological status and respond to natural and anthropogenic. We evaluated the ecosystem health of the mangroves of Azini and Gwadar based on benthic indices including AMBI, M-AMBI, and BENTIX using polychaete communities. The results showed that in both regions, EcoQ classifications ranged from "high" to "moderate" in BENTIX, "good" to "excellent" in AMBI, and "good" in M-AMBI. The M-AMBI was significantly correlated with sediment variables, including total organic matter (TOM), total organic carbon (TOC), and silt/clay. The result revealed a significant correlation between the biotic indices and the TOC content of sediments. According to the results, TOC can be used as a descriptor and indicator to evaluate the health of mangrove ecosystems in relation to benthic indices. In addition, it is necessary to combine several indices to assess the status of ecosystems

Proton MR Spectroscopy in The Diagnostic Evaluation of Suspected Mitochondrial Disease in Iran

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Diffuse Multifocal Bilateral Dysembryoplastic Neuroepithelial Tumor: A Very Unusual Case Report

Dysembryoplastic neuroepithelial tumor (DNT) considered as a benign cortical Glioneuronal neoplasm of children or young adults, typically present with drug-resistant focal epilepsy. DNTs are usually located in the temporal lobe but can found in any part of the supratentorial brain cortex. Multifocal DNTs have rarely reported. Here we present an eight years old boy with two years follow up, having a somewhat stable diffuse multinodular DNT of the most significant spatial extent that may have reported, involving cortical and subcortical left temporo-occipital lobe, bilateral basal ganglia and thalamus, presenting with headache, short stature, and behavioral disorder

Dynamic response of aluminium sheet 2024-T3 subjected to close-range shock wave: experimental and numerical studies

Abstract This present study investigates experimentally and numerically the behaviour of 1 mm thick aluminium 2024-T3 alloy sheets from near field shock waves. A comparison and examination are undertaken with respect to global deformation and plastic damage formation from two different stand-off distances of 4 mm and 50 mm that were exposed to a constant charged mass. A 4-cable instrumented pendulum blast set-up was used to carry out and monitor the blast test. The results of the blast test were subsequently used to simulate the pressure history for different stand-off distances. The simulation involved implementing a user subroutine in ABAQUS/Explicit solver to model non-uniform pressure fields for use in finite element simulation. The results provided a strong alignment of the numerical method when compared with the experimental data. The main outcome of this study is to show the significant effect of the changing damage from highly localised perforation to global deformation when the stand-off distance is changed from 4 mm to 50 mm

Hybrid and synthetic FRP composites under different strain rates: a review

As a high-demand material, polymer matrix composites are being used in many advanced industrial applications. Due to ecological issues in the past decade, some attention has been paid to the use of natural fibers. However, using only natural fibers is not desirable for advanced applications. Therefore, hybridization of natural and synthetic fibers appears to be a good solution for the next generation of polymeric composite structures. Composite structures are normally made for various harsh operational conditions, and studies on loading rate and strain-dependency are essential in the design stage of the structures. This review aimed to highlight the different materials’ content of hybrid composites in the literature, while addressing the different methods of material characterization for various ranges of strain rates. In addition, this work covers the testing methods, possible failure, and damage mechanisms of hybrid and synthetic FRP composites. Some studies about different numerical models and analytical methods that are applicable for composite structures under different strain rates are described