Experimental studies on mix design and properties of ceramic-glass geopolymer mortars using response surface methodology.

This study explores the mechanical properties of geopolymer mortars incorporating ceramic and glass powders sourced from industrial waste. A Box-Behnken design was employed to assess the effects of ceramic waste powder (CWP) content, alkaline activator ratio, solution-to-binder (S: B) ratio, and oven curing duration on the mortar's performance. Compressive strengths were measured at 3 and 28 days, and regression models were developed to predict these outcomes.

Robust control of neutral delayed systems using descriptive discretized Lyapunov function method: Design and stability analysis.

Robust control of neutral delayed systems poses a significant challenge due to their intricate dynamics and susceptibility to uncertainties. In response to this challenge, this study presents an innovative approach that combines robust control principles with the descriptive discretized Lyapunov function method. Our novel methodology enables the design of a controller capable of effectively managing disturbances, uncertainties, and inherent time delays within the system.

Exponential stability analysis of delayed partial differential equation systems: Applying the Lyapunov method and delay-dependent techniques.

This paper presents an investigation into the stability and control aspects of delayed partial differential equation (PDE) systems utilizing the Lyapunov method. PDEs serve as powerful mathematical tools for modeling diverse and intricate systems such as heat transfer processes, chemical reactors, flexible arms, and population dynamics. However, the presence of delays within the feedback loop of such systems can introduce significant challenges, as even minor delays can potentially trigger system instability.

Interpolation methods for spatial distribution of groundwater mapping electrical conductivity.

This study was carried out to develop a conceptual framework for determining the best interpolation method which mainly is employed to calculate the variability maps of electrical conductivity (EC) in neighboring regions. The considered case study is parts of the Khorasan Razavi province, Iran (including five aquifers Kashmar, Fariman, Doruneh, Sarakhs and Joveyn). In the first step, the empirical variogram (semi-variogram) was computed for the study area.

The predictive effects of learner autonomy and academic engagement on willingness to communicate, foreign language learning self-esteem, and L2 grit in an EFL context.

Psychological factors, such as the fear of misunderstandings, making grammatical mistakes, and academic demotivation contribute to students' anxiety when speaking English in language classes. Some students may struggle to contribute actively to tasks and activities in English because they do not perceive themselves to be autonomous agents, feel engaged with the specific task, or are more generally academically demotivated. It is a critical goal of all English language teachers to assist these students in developing academic self-confidence and autonomy and in honing their spoken English.

Identifying toxic elements in water, sediments, and roots of mangrove forest (Avicennia marina) in Chabahar Bay, Sea of Oman.

Mangroves play a crucial role in filtering pollutants from water and sediments. However, excessive accumulation of potentially toxic elements (PTEs) has harmful effects on marine organisms. This article investigates the concentration and distribution of PTEs in water, sediment, and the roots of endangered mangrove species in Chabahar Bay, a subtropical coastal wetland.

Synthesis of Ag/CuS doped mineral magnetite nanocomposite with improved photocatalytic activity against tetracycline and diclofenac pollutants.

The contamination of water sources by pharmaceutical pollutants presents significant environmental and health hazards, making the development of effective photocatalytic materials crucial for their removal. This research focuses on the synthesis of a novel Ag/CuS/Fe₃O₄ nanocomposite and its photocatalytic efficiency against tetracycline (TC) and diclofenac contaminants. The nanocomposite was created through a straightforward and scalable precipitation method, integrating silver nanoparticles (AgNPs) and copper sulfide (CuS) into a magnetite framework.

Sonochemical synthesis of graphene oxide-AgO nanozyme as an oxidize-like mimic for the highly sensitive detection of lithium in blood serum.

Bipolar disorder is commonly treated with lithium carbonate. The concentration of lithium in the blood serum should be closely monitored in patients who require long-term lithium therapy. To date, no colorimetric method of detecting lithium ions has been reported using nanosensors.

Day-ahead resilience-economic energy management and feeder reconfiguration of a CCHP-based microgrid, considering flexibility of supply.

Many challenges have emerged due to the intense integration of renewables in the distribution system and the associated uncertainties in power generation. Consequently, local management strategies are developed at the distribution level, leading to the emergence of concepts such as microgrids. Microgrids include a variety of heating, cooling, and electrical resources and loads, and the operators' aim is to minimize operation and outage costs.

Design of infinite horizon LQR controller for discrete delay systems in satellite orbit control: A predictive controller and reduction method approach.

In the realm of satellite orbit control, powerful controller design plays a pivotal role in minimizing fuel consumption and ensuring orbit stability. This article introduces an advanced approach to the design of a Linear Quadratic Regulator (LQR) controller with an infinite horizon, tailored for discrete delay systems. The proposed methodology integrates predictive control with a reduction method, aiming for optimality while addressing performance and system constraints.

A voyage of discovering the impacts of teacher immunity and emotion regulation on professional identity, autonomy, and work motivation in Iranian EFL landscape.

The literature has widely recognized the significance of examining the influence of teacher professional identity (TPI), teacher autonomy (TA), and teacher work motivation (TWM) on teacher well-being. However, there is a noticeable gap in the research regarding the role of teacher immunity (TI) and teacher emotion regulation (TER) in TPI, TA, TWM among English as a foreign language (EFL) teachers. In light of this gap, the present study aimed to investigate the association between TI and TER with TPI, TA, and TWM of EFL teachers.

Promising photocatalytic activity of AgSO-modified BiOCl/BFO heterostructures under visible light.

In this work, a simple co-precipitation method for the preparation of AgSO@BiOCl@BiFeO (BFO) was developed. Ultraviolet-visible spectrophotometric analysis, X-ray diffraction patterns, Fourier transform infrared spectroscopy (FT-IR), and scanning field emission electron microscopy (FESEM) were performed to characterize the newly synthesized nanocomposite. In addition, the EDX method was used to determine the actual material quantities.

May I come in? A probe into the contributions of self-esteem, teacher support, and critical thinking to anxiety and shyness in language classes.

Many students feel uncomfortable when obliged to communicate in English. Students' fear of speaking English is influenced by psychological reasons such as the fear of failing, being misunderstood, and making grammatical errors. Students' active participation in English class discussions might be hindered by shyness, nervousness, lack of confidence, and motivation.

The Relationship Between Bilingualism and Control Aspect of Intelligence: A Study of Persian-speaking Individuals.

Introduction: The study of the relationship between bilingualism and the possible impact it might have on the control aspect of intelligence of adults in general and preschool children, in particular, has always been the subject of controversy for researchers. This research, following the related findings and gaps in the literature and inspired by Craik and Bialystok's (2005) framework, tries to divulge whether bilingualism could be related to the control aspect of intelligence. As our secondary goal, we also tried to see whether there are correlations between different tests assessing control.

Canonicity Effect on Sentence Processing of Persian-speaking Broca's Patients.

Introduction: Fundamental notions of mapping hypothesis and canonicity were scrutinized in Persian-speaking aphasics.

Methods: To this end, the performance of four age-, education-, and gender matched Persian-speaking Broca's patients and eight matched healthy controls in diverse complex structures were compared via the conduction of two tasks of syntactic comprehension and grammaticality judgment.

Results: The tested structures included subject agentive, agentive passive, object experience, subject experience, subject cleft, and object cleft constructions.

Social media and psychology of language learning: The role of telegram-based instruction on academic buoyancy, academic emotion regulation, foreign language anxiety, and English achievement.

The great need and tendency to apply online classes ask for using new technologies in language teaching. Social Networking (SN) tools, in particular, Mobile-Assisted Language Learning (MALL), open new perspectives in language learning and teaching. The employment of SN in language learning may affect the learners' mental health and emotional safety.

A model of academic buoyancy, L2 grit, academic emotion regulation, and personal best: An evidence from EFL context.

Students are the products of educational system and every strategy taken in education may foster or hinder their learning progress. Efficient instruction is achieved when emotional and cognitive heath of the learners is warranted. Despite the critical roles of Academic Buoyancy (AB), L2 grit, Academic Emotion Regulation (AER), and Personal Best (PB), studies on their reciprocal relationships are still under shadow.

Modeling the contributions of EFL university professors' emotion regulation to self-efficacy, work engagement, and anger.

As university professors' emotion regulation (ER) plays a pivotal role in their efficacy, it is essential to explore if it is significantly correlated with work engagement (WE), self-efficacy, and anger at the workplace. To respond to the call, this research inspected the contributions of university professors' ER to their WE, self-efficacy, and anger. For this purpose, a total of 278 university professors were selected using a convenience sampling method and asked to fill out Language Teacher Emotion Regulation Inventory, Engaged Teacher Scale, Teacher Sense of Efficacy Scale, and Teacher Anger Scale.

Delving into the relationship between teacher emotion regulation, self-efficacy, engagement, and anger: A focus on English as a foreign language teachers.

Due to the potent role of teachers' emotion regulation in effective teaching, it seems essential to see how emotion regulation can contribute to other relevant teaching constructs. In this regard, the present study is intended to probe into the causal relationship among teacher emotion regulation, self-efficacy beliefs, engagement, and anger. In so doing, the Language Teacher Emotion Regulation Inventory (LTERI), The Teacher Sense of Efficacy Scale (TSES), The Engaged Teacher Scale (ETS), and The Teacher Anger Scale (TAS) were administered to 581 English as a Foreign Language (EFL) teachers in Iran.

Modeling the role of emotion regulation and critical thinking in immunity in higher education.

It is deemed that the effectiveness of teachers is highly entangled with psycho-emotional constructs, such as critical thinking (CT), emotion regulation (ER), and immunity. Despite the potential roles of CR, ER, and immunity, their possible relationships have remained unexplored in the higher education context of Iran. To fill in this lacuna, this study explored the potential role of CT and ER in university teachers' immunity in the Iranian higher education context.

Modeling the interplay between emotion regulation, self-efficacy, and L2 grit in higher education.

Teaching in higher education is critical and fraught with potential vicissitudes, which necessitates the presence of efficient professors armed with positive attributes to perform effectively. Although it is generally accepted that emotion regulation (ER) has numerous benefits for language teachers, in particular university professors, little is known about how it interacts with two other important constructs, i.e.

Mobile assisted language learning in learning English through social networking tools: An account of Instagram feed-based tasks on learning grammar and attitude among English as a foreign language learners.

Advancement of social media in the modern era provides a good incentive for researchers to unleash the potential of social networking (SN) tools in order to improve education. Despite the significant role of social media in affecting second/foreign language (L2) learning processes, few empirical studies have tried to find out how Instagram feed-based tasks affect learning grammar structure. To fill this lacuna of research, the current study set forth to delve into the influence of Instagram feed-based tasks on learning grammar among English as a foreign language (EFL) learners.

Determination of Concentration of Metals in Grapes Grown in Gonabad Vineyards and Assessment of Associated Health Risks.

Metals are considered major public health hazards, and they are known to accumulate in fruits, which are consumed by humans because of their unique sweet taste and potential health benefits. Therefore, the aims of this study were to determine the concentration of ten metals, namely arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), lead (Pb), and zinc (Zn) in red grape samples grown in Gonabad vineyards and to estimate the associated health risks of metals in terms of chronic daily intake (CDI), carcinogenic and non-carcinogenic risks by hazard quotient (HQ), hazard index (HI), and cancer risk (CR) for children, teenagers, and adults. The overall concentrations of the metals in red grapes were in the range 0.

Dynamical behaviours and stability analysis of a generalized fractional model with a real case study.

Introduction: Mathematical modelling is a rapidly expanding field that offers new and interesting opportunities for both mathematicians and biologists. Concerning COVID-19, this powerful tool may help humans to prevent the spread of this disease, which has affected the livelihood of all people badly.

Objectives: The main objective of this research is to explore an efficient mathematical model for the investigation of COVID-19 dynamics in a generalized fractional framework.

Investigation of carbon dioxide solubility in various families of deep eutectic solvents by the PC-SAFT EoS.

Having been introduced in 2003, Deep Eutectic Solvents (DESs) make up a most recent category of green solvents. Due to their unique characteristics, and also their tunable physical properties, DESs have shown high potentials for use in various applications. One of the investigated applications is CO absorption.