Reza Tamasgavabari, Kurosh Jafarzadeh, Masumeh Madanipoor and Hassan Badri
The purpose of this paper was the investigation of corrosion behaviour of Ni-6Al-10Cu-11Fe-15Cr alloy, as a candidate material for inert anodes in aluminium electrolysis…
Abstract
Purpose
The purpose of this paper was the investigation of corrosion behaviour of Ni-6Al-10Cu-11Fe-15Cr alloy, as a candidate material for inert anodes in aluminium electrolysis industries.
Design/methodology/approach
The samples were prepared by casting, and then were oxidized at 1,000°C for 30, 70 and 100 hours, respectively. To determine corrosion resistant of the samples, they were exposed to molten cryolite at 930°C for 70 hours. Then the surface layers were studied.
Findings
Results showed that by extension of corrosion time, thickness of oxide layers increases. In addition, it was found that Al2O3 and Cr2O3 are the major oxide compounds that appear on the surface of the sample.
Originality/value
In this paper, the Ni-6Al-10Cu-11Fe-15Cr nickel base alloy has been selected to study its corrosion behaviour in molten cryolite as a candidate for inert anodes. It was found out that by addition Al and Cr into the alloy composition, due to formation of Al2O3 and Cr2O3 following oxidation, the substrate was protected from corrosion attacks.
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Shaimaa Hadi Al-Dulaimi and Miyada Kh Hassan
This study was design to investigate of P. aeruginosa, an example of Gram-negative bacteria, in seven primary and secondary schools of Baghdad city, and the effects of Ethanol and…
Abstract
Purpose
This study was design to investigate of P. aeruginosa, an example of Gram-negative bacteria, in seven primary and secondary schools of Baghdad city, and the effects of Ethanol and Dettol of P. aeruginosa biofilm.
Design/methodology/approach
Seventy swabs were collected from seven primary and secondary schools of Baghdad city, Iraq, during November -December 2022. Swabs were collected from classes desk, doors handles, students hands and water taps. Standard microbiological testing methods were used on the samples for isolation and identification. The ability of bacteria to form biofilm and the effects of Ethanol and Dettol on “preformed” biofilms was examined by microtiter plate with the use of an ELISA reader.
Findings
In 70 swabs from seven primary and secondary schools, growth was observed in 33 swabs as P. aeruginosa. Primary schools were higher contaminated than secondary and water taps and door handles represented the main source of this contamination. The ability of bacteria to produce biofilm was observed in 19 (57.6%) isolates and 14 (42.4%) nonbiofilm producers. As well as, Ethanol (70%) treatment of preformed biofilms led to enhance biofilm formation and revealed significantly greater staining after 4 and 24h than Dettol (3%) compared to an untreated control (tryptic soy broth (TSB) incubation).
Originality/value
Studies on P. aeruginosa in Iraqi schools are quite rare. This work is considered distinctive because it drew attention to the presence of pathogenic bacteria within primary and secondary schools, which are not considered their natural environment.
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Walid S. Abdel-Wakil, Tarek M. Salama, Elbadawy A. Kamoun, Farag Abd El Hai Ahmed, Wassem Hassan, Yaser A. El-Badry and Alaa Fahmy
This paper aims to synthesize new terpolymers by the emulsion polymerization technique composed of acrylamide-based polyurethane monomers (TPM and MPM) with different vinyl…
Abstract
Purpose
This paper aims to synthesize new terpolymers by the emulsion polymerization technique composed of acrylamide-based polyurethane monomers (TPM and MPM) with different vinyl acetate copolymer systems, such as vinyl acetate/butyl acrylate (VAc/BA), vinyl acetate/ethylhexyl acrylate (VAc/2-EHA) and vinyl acetate/vinyl ester of versatic acid (VAc/VEOVA 10) systems. The performance of the prepared terpolymers as binders in emulsion coatings and textile industries was investigated and compared with the analogous commercial ones.
Design/methodology/approach
New waterborne polyurethane-vinyl ester-vinyl acetate terpolymers with high solid content and nano-scale emulsions have been successfully synthesized in two steps. The polyurethane oligomers were prepared by the prepolymer method as the first step. The second step involved polymerization with different vinyl monomers. The synthesized terpolymers were characterized using FTIR, scanning electron microscope, thermogravimetric analysis, minimum film forming temperature and particle size analyzer methods.
Findings
The synthesized emulsion terpolymers have shown small particle sizes averaged of 70 nm and a narrow distribution range, along with good mechanical, thermal and chemical stabilities. The surface coating layers of the terpolymers also have some important in terms of smoothness, clarity and binding ability in water-based coating for up to 4425 scrub cycles at 30 GU. Further, a high potential application textile printing was achieved at high solid content of 47–50%.
Originality/value
The effects of different isocyanates and vinyl monomers on the properties of obtained emulsion coatings have been studied. The improvement consequences of the coating evaluation of the waterborne binders for emulsion paints have been described. The properties of polyester/cotton fabric print pigment printing of textiles appear to be most promising enhancements by using the prepared nanocomposites of PU-co-vinyl acetate-co-vinyl ester as waterborne binders. So that the prepared emulsions have the potential to replace solvent-based coatings as waterborne binders for both emulsion coating and textile printing applications.
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Badri Munir Sukoco, Zuyyinna Choirunnisa, Mohammad Fakhruddin Mudzakkir, Ely Susanto, Reza Ashari Nasution, Sunu Widianto, Anas Miftah Fauzi and Wann-Yih Wu
Members' behaviour to support change is a critical factor in organisational change. Building on social cognitive theory, this research investigates how empowering leadership (EL…
Abstract
Purpose
Members' behaviour to support change is a critical factor in organisational change. Building on social cognitive theory, this research investigates how empowering leadership (EL) contributes to behavioural support for change in higher education. The paper argues that the relationship between EL and behavioural support for change is moderated by diversity climate.
Design/methodology/approach
To test the hypotheses, 107 colleges from the highest-ranking 11 universities in Indonesia, consisting of 1,634 faculties, participated in this study.
Findings
Members would experience higher support for change with EL. Furthermore, the positive relationship between EL and behavioural support for change was stronger in members who perceived a more diverse climate.
Originality/value
This study empirically tested how behaviour to support change was determined by leaders' empowering behaviour based on social cognitive theory in a high-power distance culture. In terms of its methodological contributions, this study used a multi-level analysis in order to test EL. Finally, the research on behavioural support for change has been expanded upon through a unit-level analysis.
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Nur Asnawi, Badri Munir Sukoco and Muhammad Asnan Fanani
Loyalty among customers is the baseline for services to use to grow and sustain their competitive advantage, particularly in the banking industry. There are two primary objectives…
Abstract
Purpose
Loyalty among customers is the baseline for services to use to grow and sustain their competitive advantage, particularly in the banking industry. There are two primary objectives of this research. First, this study aims to empirically test the Muslim Consumer Service Quality (MCSQ). Second, this study aims to test the mediating effect of Muslim Consumer Satisfaction (MCS) on the relationship between MCSQ and Muslim Consumer Loyalty (MCL) in Indonesian Islamic banks.
Design/methodology/approach
The proposed hypotheses were tested by collecting data from 280 Indonesian Islamic customers. The collected data were tested using PLS-Graph 3.0.
Findings
The findings indicate that MCSQ (consisting of Islamic values, Sharia compliance, honesty, modesty, humaneness and trustworthiness) positively influenced MCS and MCL significantly. Further, the results indicate that MCS partially mediates the influence of MCSQ on MCL.
Research limitations/implications
The data were mainly gathered in Indonesia and the model needs to be tested in other contexts. Furthermore, the questionnaire was distributed among the customers of Islamic banks, and future studies could compare it with the customers of conventional banks or dual account (Islamic and conventional bank) customers. Moreover, further studies should compare between the expectations and reality of the delivered services to understand the service quality gap, which this study did not measure.
Practical implications
The findings indicate that by measuring the service quality in the Islamic context of Islamic banks, such as MCSQ, the managers can design their services to specifically target their Muslim customers. Furthermore, customer satisfaction must be the focus for the bank’s managers when developing MCSQ to close the gap between the expectations and reality of the delivered services.
Originality/value
This study empirically tests the developed MCSQ in the context of Indonesian Islamic banks, which is expected to enrich the literature of service marketing. Furthermore, a partial mediation effect of MCS was identified on the influence of MCSQ on MCL, which few studies have discussed previously.
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Mehmet Ozdemir, Serap Mert and Ayse Aytac
This study aims to perform the surface treatment of synthetic α-Fe2O3 red iron oxide pigment with hydrolysate 3-aminopropyl silane (A) and colloidal silica (CS) and investigate…
Abstract
Purpose
This study aims to perform the surface treatment of synthetic α-Fe2O3 red iron oxide pigment with hydrolysate 3-aminopropyl silane (A) and colloidal silica (CS) and investigate the effects of surface-treated pigment on the styrene acrylic (SA) emulsion and polyurethane (PU) dispersion.
Design/methodology/approach
For this purpose, firstly red iron oxide particles were modified with A and CS separately in an aqueous medium. After isolation of the modified iron oxide were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS). Moreover, the degree of the dispersion stability of the modified pigment in coatings with SA emulsion and PU dispersion was investigated by using an oscillation rheometer. Loss (G''), storage (G') modulus, loss factor [tan(δ)] and yield stress (τ0) values were determined by performing amplitude and frequency sweep tests.
Findings
The τ0 in SA coatings decreases with the amount of used A and increases with the amount of used CS. The τ0 decreases as the amount of used A and CS in PU coatings increases. The use of CS on red iron oxide pigments causes storage modulus to increase in SA coatings at low angular frequencies, while it causes a decrease in PU coatings.
Originality/value
To the best of the authors’ knowledge, for the first time, the suspended state of the iron oxide hybrid pigment formed with CS in the coating was investigated rheologically in this study.
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Luthfi Nur Rosyidi, Badri Munir Sukoco, Imron Mawardi and Hakan Aslan
Changes are required to improve the performance of Sharia banking in Indonesia. Using dynamic capability theory, this study aims to analyze organizational learning, change process…
Abstract
Purpose
Changes are required to improve the performance of Sharia banking in Indonesia. Using dynamic capability theory, this study aims to analyze organizational learning, change process and change context (OCC) in Bank Syariah Indonesia as influenced by market orientation (competitor and customer orientation) and moderated by religiosity and its impact on organizational performance (Maqashid Sharia) using a multilevel perspective.
Design/methodology/approach
To test the hypothesis, this research surveyed by distributing online questionnaires to managers and employees at 62 branch offices of Bank Syariah, the largest Sharia bank in Indonesia. Data processing involved multilevel structural equational modeling with Mplus analysis software.
Findings
Market orientation determines an organization’s ability to change significantly, which leads to organizational performance being significantly moderated by religiosity. In OCC, organizational learning influences change context through change processes, ultimately influencing organizational performance (Maqashid Sharia).
Originality/value
This research used a multilevel perspective by combining market orientation and OCC variables moderated by religiosity and its impact on Maqashid Sharia. This study was conducted at the largest Sharia bank in Indonesia, Bank Syariah Indonesia.
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Masood Abdulla Badri, Hassan Selim, Khaled Alshare, Elizabeth E. Grandon, Hassan Younis and Mohammed Abdulla
The purpose of this paper is to empirically test the causal relationships in the Malcolm Baldrige National Quality Award (MBNQA) Education Performance Excellence Criteria.
Abstract
Purpose
The purpose of this paper is to empirically test the causal relationships in the Malcolm Baldrige National Quality Award (MBNQA) Education Performance Excellence Criteria.
Design/methodology/approach
Using a sample of 220 respondents from 15 United Arab Emirates (UAE) universities and colleges, results of regression analysis and confirmatory structural equation modeling show that all of the hypothesized causal relationships in the Baldrige model are statistically significant.
Findings
A comprehensive “measurement model” grounded in the Baldrige Performance Excellence in Education Criteria for the 33 items of measurement is developed, tested, and found to be valid and reliable. Leadership is identified as a driver for all components in the Baldrige System, including measurement, analysis and knowledge management, strategic planning, faculty and staff focus and process management. All Baldrige components (categories) are significantly linked with organizational outcomes as represented by the two categories of organizational performance results and student, stakeholder and market focus. The paper also tests the statistical fit of the only Baldrige model dealing with higher education, which was published in 1998 by Winn and Cameron.
Research limitations/implications
The data obtained are based on a sample of UAE higher education institutions. Studies in other countries should be conducted using the developed model to ensure the reliability of the results obtained.
Practical implications
A greater understanding of the linkages between the elements making‐up the MBNQA Education Performance Excellence Criteria model, facilitating the guiding role that the award models play in the implementation of quality management in higher education.
Originality/value
For the first time, an instrument of the MBNQA Education Performance Excellence Criteria is developed and tested. A new in‐depth and holistic perspective for examining the relationships and linkages in the MBNQA Education Performance Excellence Criteria model is provided.
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Ujang Syahrul Mubarrok, Izzani Ulfi, Raditya Sukmana and Badri Munir Sukoco
Most available studies focus mainly on Islamic economics and finance with none conducted on Islamic marketing bibliometrics. The purpose of this paper is to commemorate the 11th…
Abstract
Purpose
Most available studies focus mainly on Islamic economics and finance with none conducted on Islamic marketing bibliometrics. The purpose of this paper is to commemorate the 11th anniversary of the Journal of Islamic Marketing (JIMA) in 2020 by evaluating the publication pattern and scientific advancement of JIMA between 2010 and 2020.
Design/methodology/approach
The paper used bibliometric analysis and visualization of similarities viewer software for the graphical conception of the bibliographic data, including bibliographic coupling, co-citation and co-occurrence of keywords.
Findings
There was an increase in the number of journal documents and this depicts a rising interest in the submission of articles. Moreover, the number of conceptual papers received has also increased and this shows JIMA’s support for knowledge development in Islamic marketing. Meanwhile, Halal is one of the currently trending topics, therefore, there is an opportunity for more exploration and research on the concept.
Research limitations/implications
The bibliographical material applied in this study was only retrieved from the Scopus database. Therefore, more studies need to be conducted by incorporating other indexing and database in the scientific field of Islamic marketing.
Practical implications
The research is useful to understand queries related to scientific products such as the number of publications, contributors, keywords, countries and institutions often used in the articles of the journal.
Originality/value
It presented an exclusive bibliometrics analysis and identified the main trend of the publications in the journal from 2010 when it was established until the second issue of volume 11 in 2020.
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This paper aims to investigates the experiences of violence among Sudanese survivors and the associated mental health outcomes, including posttraumatic stress disorder (PTSD) and…
Abstract
Purpose
This paper aims to investigates the experiences of violence among Sudanese survivors and the associated mental health outcomes, including posttraumatic stress disorder (PTSD) and anxiety disorders. It highlights the variety, frequency and severity of political violence exposure and its impact on psychological trauma.
Design/methodology/approach
A cross-sectional quantitative study used data from 324 Sudanese youth exposed to violence. A self-rated 17-item questionnaire assessed violence exposure types and frequency. The General Health Questionnaire and the Davidson Trauma Scale evaluated mental health.
Findings
High levels of PTSD and poor general mental health were found in 60% of the youth. Exposure included brutal beatings (47%), physical torture (17%) and sexual violence (2%), with 47% enduring hours of torture.
Research limitations/implications
The cross-sectional design limits causal inferences, and self-reported data may introduce biases. Future studies should use longitudinal designs and consider cultural factors to better understand the long-term effects of political violence.
Practical implications
The study highlights the need for systematic trauma screening and targeted psychosocial support programs for Sudanese youth, particularly for underrepresented young adult males, to address significant trauma effectively.
Originality/value
This research provides novel insights into the mental health impact of political violence on Sudanese youth, offering valuable evidence to inform policies and programs aimed at supporting this vulnerable population.