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To predict the real behavior of the full-scale model using a scale model, optimized simulation should be achieved. In reinforced concrete (RC) models, scaling can be substantially more critical than in single-material models because of multiple reasons such as insufficient bonding strength between small-diameter steel bars and concrete, and excessive aggregate size. Overall, there is a shortfall of laboratory and field-testing studies on the behavior of secant pile walls under lateral and axial loads. Accordingly, the purpose of this study is to investigate the validity and the performance of the 1/10th scaled RC secant pile wall under the influence of different types of loading.

The structural performance of the examined models was evaluated using two types of tests: bending and axial compression. A self-compacting concrete mix was suggested, which provided the best concrete mix workability and appropriate compressive strength.

Under axial and bending loads, the failure modes were typical. Where the plain and reinforced concrete piles worked in tandem to support the load throughout the loading process, even when they failed. The experimental results were relatively consistent with some empirical equations for calculating the modulus of elasticity and critical buckling load. This confirmed the validity of the proposed model.

According to the analysis and verification of experimental tests, the proposed 1/10th scaled RC secant pile model can be used for future laboratory purposes, especially in the field of geotechnical engineering.

Even though it is widely used, reinforced concrete (RC) is susceptible to damage from various environmental factors. The hazard of a fire attack is particularly severe because it may cause the whole structure to collapse. Furthermore, repairing and strengthening existing structures with high-performance concrete (HPC) has become essential from both technical and financial points of view. In particular, studying the postfire behavior of HPC with normal strength concrete substrate requires experimental and numerical investigations. Accordingly, this study aims to numerically investigate the post-fire behavior of reinforced composite RC slabs.

Consequently, in this study, a numerical analysis was carried out to ascertain the flexural behavior of simply supported RC slabs strengthened with HPC and exposed to a particularly high temperature of 600°C for 2 h. This behavior was investigated and analyzed in the presence of a number of parameters, such as HPC types (fiber-reinforced, 0.5% steel, polypropylene fibers [PPF], hybrid fibers), strengthening side (tension or compression), strengthening layer thickness, slab thickness, boundary conditions, reinforcement ratio and yield strength of reinforcement.

The results showed that traction-separation and full-bond models can achieve accuracy compared with experimental results. Also, the fiber type significantly affects the postfire performance of RC slab strengthened with HPC, where the inclusion of hybrid fiber recorded the highest ultimate load. While adding PPF to HPC showed a rapid decrease in the load-deflection curve after reaching the ultimate load.

The proposed model accurately predicted the thermomechanical behavior of RC slabs strengthened with HPC after being exposed to the fire regarding load-deflection response, crack pattern and failure mode. Moreover, the considered independent parametric variables significantly affect the composite slabs’ behavior.

The design of cantilever pile walls (CPWs) presents several common challenges. These challenges include soil variability, groundwater conditions, complex loading conditions, construction considerations, structural integrity, uncertainties in design parameters and construction and monitoring costs. Accordingly, this paper is to provide a detailed literature review on the design criteria of CPWs, specifically in cohesionless soil. This study aims to present a comprehensive overview of the current state of knowledge in this area.

The paper uses a literature review approach to gather information on the design criteria of CPWs in cohesionless soil. It covers various aspects such as excavation support systems (ESSs), deformation behavior, design criteria, lateral earth pressure calculation theories, load distribution methods and conventional design approaches.

The review identifies and discusses common challenges associated with the design of CPWs in cohesionless soil. It highlights the uncertainties in determining load distribution and the potential for excessive wall deformations. The paper presents various approaches and methodologies proposed by researchers to address these challenges.

The paper contributes to the field of geotechnical engineering by providing a valuable resource for geotechnical engineers and researchers involved in the design and analysis of CPWs in cohesionless soil. It offers insights into the design criteria, challenges and potential solutions specific to CPWs in cohesionless soil, filling a gap in the existing knowledge base. The paper draws attention to the limitations of existing analytical methods that neglect the serviceability limit state and assume rigid plastic soil behavior, highlighting the need for improved design approaches in this context.

This paper aims to examine the impact of environmental, social and governance (ESG) disclosure and firm value (FV), as well as, pinpoints the role of the audit quality (AQ) as a moderating variable on such impact; where the authors hypothesize that AQ modulates the relationship between ESG disclosure and the FV.

Data of a sample of firms listed on the Egyptian Stock Exchange Market (EGX) were collected over the period of 2017–2021 and analyzed using the regression and 2SLS models.

The results suggested that: (1) the ESG has a significant positive impact on the FV in the EGX, and (2) AQ has a significant impact, as a moderating variable, on the relationship between ESG disclosure and FV.

The findings would help the Egyptian market authorities in realizing the importance of integrating ESG information within the financial reports of the listed firms. The findings could also help in developing effective disclosure procedures to provide shareholders with useful information.

This paper contributes to the literature regarding the ESG disclosure components and the FV value by considering AQ in testing such relationship.

Silicon photovoltaics technology has drawbacks of high cost and power conversion efficiency. In order to extract the maximum output power of the module, maximum power point (MPP) is used by implying the nonlinear behavior of I-V characteristics. Different techniques are used regarding maximum power point tracking (MPPT). The paper aims to review the techniques of MPPT used in PV systems and review the comparison between Perturb and Observe (P&O) method and incremental conductance (IC) method that are used to track the maximum power and gives a comparative review of all those techniques.

A study of MPPT techniques for photovoltaic (PV) systems is presented. Matlab Simulink is used to find the MPP using P&O simulation along with IC simulation at a steady temperature and irradiance.

MATLAB simulations are used to implement the P&O method and IC method, which includes a PV cell connected to an MPPT-controlled boost converter. The simulation results demonstrate the accuracy of the PV model as well as the functional value of the algorithms, which has improved tracking efficiency and dynamic characteristics. P&O solution gave 94% performance when configured. P&O controller has a better time response process. As compared to the P&O method of tracking, the incremental conductance response rate was significantly slower.

In PV systems, MPPT techniques are used to optimize the PV array output power by continuously tracking the MPP under a variety of operating conditions, including cell temperature and irradiation level.

The purpose of this study is to determine the nature of archaeological papyrus damage and monitoring the mechanics of damage caused by black inks to the chemical properties of ancient papyrus.

This study the papyrus surface with a digital microscopy “USB,” examination and analyzing by “Scanning Electron Microscope,” characterization of black ink used in writing the ancient papyrus using “Scanning Electron Microscopy” with (EDX). Detection of changes in the chemical bonds of ancient papyrus samples by “Fourier transform infrared” FTIR.

The result confirmed that SEM examination showed the organization of the parenchyma cells that make up papyrus tissue. Characteristic waveform appears, it indicates the ancient Egyptian manufacturer’s use of the (Strips Method) in the process of manufacturing the archaeological papyrus. Also, the appearance of (Over Lapping) stacking of papyrus slides. EDX analysis showed that the black ink used to write the papyrus was (Carbon Ink). High oxygen content in the papyrus sample analysis indicates deterioration of the cellulose fibers. FTIR spectrum showed that Arabic gum is the bonding material for carbon ink particles, it also showed that archaeological papyrus suffers from hydrolysis due to exposure of papyrus fibers to high moisture content or direct water, resulting in smudge, bleeding and fading of carbon ink on the archaeological papyrus support.

The study is archaeological papyrus with black ink scripts from the excavation of the Qasr I brim.

Mandating the use of building information modelling (BIM) in building projects has sprawled, but the uptake of BIM in building services engineering (BSE) remains sluggish. The purpose of this paper is to explore how to achieve wider adoption of BIM in BSE.

Through an extensive literature review, the benefits of, barriers to and measures conducive to, using BIM for BSE were identified and classified. Built upon the review and a focus group meeting, a questionnaire was devised for an industry-wide survey in Hong Kong and the survey data were processed by statistical analyses.

On the ranking of the benefits, strong agreements existed between the BSE and non-BSE respondent groups; yet no significant agreement was found between the two groups on the rankings of the barriers or the conducive measures. The top conducive measure, according to the BSE group, is “Allow enough time in project programme for BIM model development”.

The data collection and analysis methods of this study may be used for similar BIM studies in other places.

The priority of the conducive measures, which aid policy or decision makers in formulating how to get BIM effectively implemented in BSE, are useful information in the pursuit of a more productive and sustainable built environment.

This BIM study is specifically on BSE rather than the other disciplines (e.g. architecture, structural engineering) that have been widely studied.

This paper aims to depict the mechanistic role of vitamin D on dementia prevention, relief of the severity and the complication of the disease. All papers indexed in scientific databases, including Scopus, Elsevier, PubMed, Embase and Google Scholar between 2000 and 2021 were extracted and discussed. To present the mechanistic role of vitamin D in declining the severity of dementia, keywords including dementia, vitamin D, oxidative stress, inflammation, amyloid beta-Peptides were used.

Dementia is a prevalent cognitive disorder worldwide, especially in elderly people, which is accompanied by serious disabilities. Besides genetic, biological and lifestyle factors are involved in the incidence of dementia. An unhealthy diet along with micronutrient deficiencies are among modifiable factors. Vitamin D is one of the important micronutrients in brain health. Besides the involvement in gene expression, bone mineralization, apoptosis, inflammation, skeletal maturation, neurotropic action and hemostasis of phosphate and calcium, vitamin D also exerts neuroprotective effects via genomic and non-genomic pathways.

Vitamin D up-regulates the expression of various genes involved in dementia incidence via various mechanisms. Decreasing oxidative stress and the neuro-inflammatory cytokines levels, regulation of the expression of alternated Proteins including Tau and Amyloid-ß, calcium homeostasis in the central nervous system and also vascular are considered main mechanisms.

Considering the importance of diet in preventing dementia, adherence to a healthy diet that provides essential nutrients to brain function seems to be urgent. Controlling serum levels of vitamin D periodically and providing vitamin D by related sources or supplements, if there is a deficiency, is recommended. Future studies are needed to clarify other related mechanisms.

This study aimed to investigate the role of the country's institutional quality on the environmental, social and governance (ESG) performance of its companies.

Over a four-year period (2016–2019), the study examined the ESG performance of 412 organizations situated in 19 countries. ESG performance was the dependent variable, and the independent variables were rule of law, economic freedom, education index and international trade freedom. These factors described the institutional quality of countries in the authors’ study.

The findings reveal that institutional quality has a major impact on ESG performance. Companies engage in more ESG practices when they operate in countries with greater economic freedom and international trade freedom. The authors corroborated the core assumption of institutional theory (IT), which argues that organizational behavior is determined by the country's institutional setting.

The findings, like all research, should be interpreted with caution. The authors’ research focused solely on large energy corporations. As a result, the conclusions cannot be applied to small companies or other industries. ESG performance can also be measured using different datasets.

If managers want their companies to perform better in terms of ESG, the authors recommend that they form a CSR committee and sign the Global Compact. This study may be valuable to international policymakers because they can underline that greater economic freedom, better education and greater international trade freedom all promote higher ESG performance.

To the best of the authors' knowledge, nearly all of research explores the relationship between ESG and financial performance. As a result, this study built on past research by investigating how national aspects affect corporate ESG performance.

Several research models have been proposed in the existing literature to understand the intention to use Islamic banking where conventional bank customers are not primarily addressed. Upon measuring the level of Islamic financial literacy (IFL) among the customers of conventional banks in the UAE, the purpose of this paper is to examine the direct and indirect effects of IFL, awareness, cost and benefit, reputation and attitude towards Islamic banking on the intention of potential customers to use Islamic banking.

Using judgmental sampling techniques, questionnaires were distributed to working individuals who did not have accounts with Islamic banks. A total of 350 completed and usable questionnaires were received and used for further analysis. The SmartPLS 3.0 software was used to analyse the data.

The results revealed that the level of IFL was high across the respondents and differed significantly as a function of gender, income level and years of work experience. The findings showed that IFL, awareness, reputation and attitude towards Islamic banking significantly influenced the intention to use Islamic banking, while cost and benefit appear not to. Interestingly, IFL was negatively correlated with the intention to use Islamic banking, but when the attitude towards Islamic banking mediated the relationship between IFL and the intention to use Islamic banking it then became positive.

Future research should consider looking at non-Muslim economies, which might be more vulnerable to IFL. In addition, a comparison between the current customers of Islamic banks and potential customers might be relevant to see whether the IFL of the current customers differs from the new customers.

The implications of the research are twofold. First the study suggests that IFL is crucial for an Islamic bank’s potential new customers. Islamic bank managers should design and focus their policies toward enriching the knowledge of the public about Islamic banks and their products. Second, IFL alone does not lead to a higher level of intention to use Islamic banks unless there is a positive attitude towards such banks.

To the authors’ knowledge, this is one of the first studies to consider the IFL measure used in this paper. Therefore, this study will be the foundation for future research on IFL.