191,317 research outputs found
Baloghiella foveolata Akrami & Ebrahimi 2013
No full text<i>Baloghiella foveolata</i> ** AKRAMI & EBRAHIMI, 2013 <p>M a t e r i a l e x a m i n e d: Fars, Maharloo, 28.VIII.2011, (N: 29°21'; E: 52°48'; 1491 m), soil under knotweed plants, leg. F. EBRAHIMI.</p> <p>D i s t r i b u t i o n: Iran (AKRAMI & EBRAHIMI 2013b).</p>Published as part of <i>Ebrahimi, Forough & A, Mohammad, 2015, Oribatid mites (Acari: Oribatida) associated with pastures of Shiraz township, Fars province, Iran, pp. 491-503 in Linzer biologische Beiträge 47 (1)</i> on page 500, DOI: <a href="http://zenodo.org/record/5414774">10.5281/zenodo.5414774</a>
Ooencyrtus ferdowsii Ebrahimi & Noyes 2014
No full text126. Ooencyrtus ferdowsii Ebrahimi & Noyes, 2014 Host associations in Iran. Osphranteria coerulescens on Prunus amygdalus [P. dulcis], P. armeniaca and P. domestica (Ebrahimi et al. 2014). Distribution in Iran. South Khorasan (Ebrahimi et al. 2014). General distribution. Endemic to Iran.Published as part of Fallahzadeh, Majid & Japoshvili, George, 2017, An updated checklist of Iranian Encyrtidae (Hymenoptera, Chalcidoidea), pp. 1-46 in Zootaxa 4344 (1) on page 24, DOI: 10.11646/zootaxa.4344.1.1, http://zenodo.org/record/104221
Evaluating Hydrogeochemical Processes Regulating Groundwater Quality in an Unconfined Aquifer
No full textHydrogeochemistry of groundwater was investigated to understand groundwater quality for drinking and irrigation purposes in an unconfined aquifer located in Jangal plain, NE Iran. Groundwater samples were collected and analyzed for determining physicochemical parameters (TDS, EC and pH) and concentration of major ions (Na+, K+, Ca2+, Mg2 +, Cl−, HCO3−, SO42 − and CO32 −). Water quality assessment parameters including SAR, Na%, RSC, TH and SI were also calculated. TDS, EC, Na+, K+, Cl− and SO42 − levels in all samples were greater than the maximum permissible limit, while pH, Ca2 +, Mg2 + and HCO3− levels in most samples were within the standard range. Based on the Piper diagram, most groundwater samples were classified into Na-Cl as dominant water type. The saline water intrusion, evapotranspiration, ion exchange reactions and dissolution of carbonate minerals were found as the main processes controlling the chemistry of groundwater. According to the calculated parameters and the Wilcox and USSL diagrams, high salinity and alkalinity of the groundwater resources pose a major problem for irrigation use. It is obvious that the groundwater unsuitability threatens sustainable crop production and soil quality. Hence, urgent management of groundwater resources is suggested to avoid harmful effects on inhabitants
Gadolinium as an Emerging Microcontaminant in Water Resources: Threats and Opportunities
No full textAs a result of high doses of paramagnetic gadolinium (Gd) chelates administered in magnetic resonance imaging (MRI) exams, their unmetabolized excretion, and insufficient removal in wastewater treatment plants (WWTPs), large amounts of anthropogenic Gd (Gdanth) are released into surface water. The upward trend of gadolinium-based contrast agent (Gd-CA) administrations is expected to continue growing and consequently higher and higher anthropogenic Gd concentrations are annually recorded in water resources, which can pose a great threat to aquatic organisms and human beings. In addition, the feasibility of Gd retention in patients administered with Gd-CAs repeatedly, and even potentially fatal diseases, including nephrogenic systemic fibrosis (NSF), due to trace amounts of Gd have recently arisen severe health concerns. Thus, there is a need to investigate probable adverse health effects of currently marketed Gd-CAs meticulously and to modify the actual approach in using Gd contrast media in daily practice in order to minimize unknown possible health risks. Furthermore, the employment of enhanced wastewater treatment processes that are capable of removing the stable contrast agents, and the evaluation of the ecotoxicity of Gd chelates and human exposure to these emerging contaminants through dermal and ingestion pathways deserve more attention. On the other hand, point source releases of anthropogenic Gd into the aquatic environment presents the opportunity to assess surface water—groundwater interactions and trace the fate of wastewater plume as a proxy for the potential presence of other microcontaminants associated with treated wastewater in freshwater and marine systems
Interaction between High-Level and Low-Level Image Analysis for Semantic Video Object Extraction
No full text The task of extracting a semantic video object is split into two subproblems, namely, object segmentation and region segmentation. Object segmentation relies on a priori assumptions, whereas region segmentation is data-driven and can be solved in an automatic manner. These two subproblems are not mutually independent, and they can benefit from interactions with each other. In this paper, a framework for such interaction is formulated. This representation scheme based on region segmentation and semantic segmentation is compatible with the view that image analysis and scene understanding problems can be decomposed into low-level and high-level tasks. Low-level tasks pertain to region-oriented processing, whereas the high-level tasks are closely related to object-level processing. This approach emulates the human visual system: what one “sees” in a scene depends on the scene itself (region segmentation) as well as on the cognitive task (semantic segmentation) at hand. The higher-level segmentation results in a partition corresponding to semantic video objects. Semantic video objects do not usually have invariant physical properties and the definition depends on the application. Hence, the definition incorporates complex domain-specific knowledge and is not easy to generalize. For the specific implementation used in this paper, motion is used as a clue to semantic information. In this framework, an automatic algorithm is presented for computing the semantic partition based on color change detection. The change detection strategy is designed to be immune to the sensor noise and local illumination variations. The lower-level segmentation identifies the partition corresponding to perceptually uniform regions. These regions are derived by clustering in an -dimensional feature space, composed of static as well as dynamic image attributes. We propose an interaction mechanism between the semantic and the region partitions which allows to cope with multiple simultaneous objects. Experimental results show that the proposed method extracts semantic video objects with high spatial accuracy and temporal coherence.</p
A GIS-based approach for detecting pollution sources and bioavailability of metals in coastal and marine sediments of Chabahar Bay, SE Iran
No full textChabahar Bay in SE of Iran is a shallow semi-enclosed environment affected by anthropogenic activities. In this paper, 19 sediment samples were collected and concentration of selected metals (Cu, Pb, Zn, Cd, Ni, Cr, Co, V and Fe) was determined using ICP-MS analytical method. Sediment samples from five stations were also selected for sequential extraction analysis and concentration of metals in each fraction was determined using ICP-OES. In order to investigate the environmental quality of Chabahar Bay, geographic information system (GIS) along with geochemical data, environmental indices and statistical analyses were used. Calculated contamination degree (Cd) revealed that most contaminated stations (Ch3, S1 and S3) are located SE of Chabahar Bay and contamination decreases in a NW direction. The S9 station, west of the bay, is also contaminated. High organic matter (OM) content in the sediments is most likely the result of fuel and sewage discharge from fishing vessels along with discharge of fishing leftovers. Significant correlation coefficient among OM, Fe, Cu, Pb, Zn and Cd seemingly reflects the importance of the role that OM and Fe oxy-hydroxides play in the metals mobility. The results of hierarchical cluster analysis (HCA), computed correlation coefficient and sequential extraction analysis suggest that Cu, Pb, Zn and Cd probably come from antifouling and sea vessel paints, while Ni, Cr, Co, V and Fe are most likely contributed by ophiolitic formations located north of the bay and/or deep sea sediments. Average individual contamination factors (ICFs) indicated that the highest health hazard from the bay is posed by Cu, Pb and Zn
Unlocking the biorefinery approaches to valorize sugar beet leaves (B. Vulgaris L.) for food industry applications: A critical review
No full textThe large-scale cultivation of sugar beets generates a significant amount of by-products,
particularly leaves, which are often overlooked and wasted. However, these by-products are a
valuable source of functional compounds that can be repurposed to enhance crop
sustainability and produce food ingredients. Therefore, valorization of sugar beet leaves
(SBLs) is a prudent biorefinery approach for future utilization. This literature review
highlights the significant advances in valorizing SBLs for food industry applications. The
extractable phytochemical compounds, the sustainability and challenges of recovery, the
extraction methods, potential health benefits, current applications, and prospective
valorization possibilities of SBLs within a circular economy framework were reviewed. The
results showed that SBLs are rich in nutrients and bioactive phytochemicals such as
polyphenols (e.g., flavonoids and phenolic acids), proteins, essential amino acids,
chlorophylls, fiber, and essential fatty acids. The application of these compounds in the
development of food products may exhibit numerous health benefits, including antioxidant,anti-microbial, anti-inflammatory, anti-diabetic, and anti-cancer properties. However, for potential applications of SBLs in the food industry to develop functional foods, nutritional supplements, and natural food additives, further research is needed to optimize the efficient extraction of functional compounds on an industrial scale and to verify the safety of extracted compounds for human consumption
Protein-polyphenol complexation vs. conjugation: A review on mechanisms, functional differences, and antioxidant-emulsifier roles
No full textThe interaction between proteins and polyphenols has gained attention for improving the stability and physicochemical properties of colloidal systems. This review focuses on recent advances in their interaction mechanisms and functional impacts. Protein-polyphenol assemblies are formed through covalent bonding (i.e., conjugation) or non-covalent bonding (i.e., complexation). These interactions may lead to distinct functionalities and properties influenced by environmental conditions. The conjugation is usually initiated by the oxidation of polyphenols through alkaline treatment, free radicals, etc., while complexation occurs even under milder conditions, such as neutral pH and room temperature, resulting in weaker and reversible interactions. Despite the significant increase in the number of studies on protein-polyphenol interactions in recent years, there is no clear consensus in the previous literature on whether covalent or non-covalent bonding provides better stability under different processing conditions. In emulsion-based food systems, protein-polyphenol assemblies can function dually as antioxidant-emulsifiers, where proteins provide the emulsifying ability, and polyphenols contribute antioxidant activity. This effect is due to the positioning of these assemblies in the oil-water interface. Understanding the distinct roles and conditions of protein-polyphenol interactions is crucial for optimizing their use in designing stable, functional colloidal systems, particularly in emulsion-based foods
Effect of freeze-drying and ultrasound-assisted extraction on bioactive compounds in beet leaves (Beta vulgaris L.).
No full textPristomerus persicus Riedel & Ameri & Talebi & Ebrahimi 2019, nov.sp.
No full textPristomerus persicus nov.sp. (figs 15-17) T y p e m a t e r i a l: Holotype:♂ ̎ Iran: Markazi Prov., Arak, Haftad-Gholleh, Protected area, Chekab valley, 2090 m, N 34°08́07.2́́ E 50°15́56.1́́, Malaise trap, 11.vi.-20.vii.2018, leg. M. Parachami-Araghi̎ (ZSM, Munich). D e s c r i p t i o n: ♂: Body length 6.5 mm. Antenna with 30 flagellomeres; 1st flagel- lomere 4.0x longer than wide, 2 nd flagellomere 3.5x longer than wide, preapical flagellomeres slightly longer than wide. Temple strongly and roundly narrowed behind eye. Ocelli large, distance of lateral ocellus to eye 0.5x ocellar diameter. Frons finely granulate and with scattered punctures. Face smooth, with scattered punctures. Minimal distance of compound eyes 0.39x width of head. Malar space length 0.7x width of mandibular base. Pronotum smooth. Mesoscutum with very scattered punctures, mainly along notauli, otherwise smooth. Scuto-scutellar groove with 4 fine longitudinal ridges, scutellum smooth. Mesopleuron and metapleuron densely punctate, speculum smooth. Propodeum completely carinate, densely punctate, area petiolaris with transversal rugae. Area basalis trapezoid, c.1.5x longer than wide. Area superomedia c.2.8x longer than wide. Hind coxa granulate and with scattered punctures. Hind femur stout, c.3.0x longer than wide; ventral tooth at 0.65 of femoral length and 0.83x as long as basal width of hind tibia. First intercubitus of fore wing c.1.5x longer than vein between cubitus and 2 nd recurrent vein; nervulus interstitial. Nervellus of hind wing intercepted at apical 0.8. Postpetiolus, 2 nd tergite completely and basal 1/4 of 3 rd tergite finely striate. 2 nd tergite c.1.9x longer than wide. Color: Yellowish-red. Scapus and pedicellus reddish; flagellum black. Cream-yellow are palps, mandible except teeth, clypeus, face, orbits, lateral and paramedian stripes of mesoscutum (confluent anteriorly), scutellum except red basomedian spot, apical spots on mesopleuron and metapleuron and apical 1/4 of propodeum. Black are occiput, scutellar groove and base of propodeum. 1 st to 3 rd tergites blackish basally and with creamyellow apical bands. Legs red; apical spots on coxae, trochanters and femora creamyellow; hind tibia cream-yellow externally; mid and hind tarsi brownish. Wings hyaline; pterostigma brown, pale proximally. ♀ unknown. Remark: This new species runs to Pristomerus arabicus HORSTMANN in his key of West Palaearctic Pristomerus species (HORSTMANN 1990), but differs by its larger ocelli, stouter hind femur and a different color pattern.Published as part of Riedel, Matthias, Ameri, Ali, Talebi, Ali Asghar & Ebrahimi, Ebrahim, 2019, Contribution to the Ɨchneumonidae (Hymenoptera) oI Ɨran, with descriptions oI seven new species, pp. 361-390 in Linzer biologische Beiträge 51 (1) on pages 369-370, DOI: 10.5281/zenodo.375834
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