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Article
Publication date: 25 May 2010

M. Abdel Rehim, H.M. Fahmy, Z.E. Mohamed, M.H. Abo‐Shosha and N.A. Ibrahim

The purpose of this paper is to show how to remove some dyestuffs, as pollutants, from their aqueous solutions.

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Abstract

Purpose

The purpose of this paper is to show how to remove some dyestuffs, as pollutants, from their aqueous solutions.

Design/methodology/approach

To achieve the goal, a water soluble hyperbranched poly (ester‐amide) (HBP) was synthesised using the melt polycondensation method by the reaction of maleic anhydride (MA) and diisopropanol amine (DIPA) at 140°C at a molar ratio of 1:1.3 MA: DIPA, respectively. This HBP was incorporated in the preparation of an effective microcrystalline cellulose (MCC)/dimethyloldihydroxyethylene urea (DMDHEU)/HBP adduct by crosslinking HBP with DMDHEU in presence of MCC. Furthermore, the prepared adduct was characterised by investigation its infra red and then utilised in the removal of three anionic dyestuffs from aqueous solutions, namely Irgalan Blau 3GL (an acid dye), SIRIUS Blau S‐BRR (a direct dye) and Levafix Brill Orange P‐GR (a hydrolysed reactive dye).

Findings

The results obtained revealed that the optimum conditions for preparing MCC/DMDHEU/HBP adduct are [HBP], 90 g/l; [DMDHEU], 200 g/l; LR, 1/3.3; [NC4LH], 20 g/l; a time of 30 min and a temperature of 160°C. Moreover, the results also showed that the extent of removal of such dyestuffs from their aqueous solutions by the prepared adduct follows the order: reactive dye>acid dye>direct dye, it is more pronounced at lower than at higher pH values and the removal of each dye by that adduct follows a first‐order reaction.

Research limitations/implications

Other substrates such as chitosan can be used to prepare more effective adducts.

Practical implications

Hyperbranched polymers can be used effectively to prepare ion exchangers capable of removing the pollutants of dyestuffs from their aqueous solutions.

Originality/value

The aforementioned prepared HBP is a novel hyperbranched polymer and could be applied in the removal of many other pollutants.

Details

Pigment & Resin Technology, vol. 39 no. 3
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 28 September 2020

Hardius Usman, Dipa Mulia, Chairy Chairy and Nucke Widowati

The purpose of this study is to propose an extended model of technology acceptance model (TAM) in the use of financial technology (Fintech) in the context of Islamic philanthropy…

3102

Abstract

Purpose

The purpose of this study is to propose an extended model of technology acceptance model (TAM) in the use of financial technology (Fintech) in the context of Islamic philanthropy, especially by studying and exploring the role of trust, image and religiosity in TAM, and to provide policy recommendation for the authorized organizations in Indonesia regarding several crucial factors that need to be considered so that Indonesian Muslims are willing to use Fintech for philanthropic purposes.

Design/methodology/approach

Online surveys were conducted to collect the data, of which 425 respondents have completed and returned the questionnaire. Multiple linear regression model and multi-variate analysis of variance are applied to test the statistical hypotheses.

Findings

This study supports the theory of reasoned action and the TAM. In which, the relationship between perceived ease of use and perceived usefulness with TAM is determined by trust and religiosity.

Research limitations/implications

It is worth to note the limitation of this study lies in the sampling technique and data collection. Indonesia is a fast archipelago country and consists of 34 provinces, but not all of the provinces are represented in the sample. The selected respondent heavily depends on the previous respondent’s willingness to share the questionnaire. So that the number of respondents does not proportionate to region or province.

Originality/value

This study offers an extended model of TAM that has never been done before, namely, by exploring the role of trust, religiosity and image, in the context of Islamic philanthropy.

Details

Journal of Islamic Marketing, vol. 13 no. 2
Type: Research Article
ISSN: 1759-0833

Keywords

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Article
Publication date: 14 May 2020

Dipa Mulia, Hardius Usman and Novia Budi Parwanto

The purposes of this study are to develop an extended technology acceptance model (TAM) model by adding customer intimacy, perceived risk, trust and Sharia compliance as external…

2682

Abstract

Purpose

The purposes of this study are to develop an extended technology acceptance model (TAM) model by adding customer intimacy, perceived risk, trust and Sharia compliance as external variables, in which TAM is used as the evaluation method for the use of e-banking and m-banking by customers of Islamic bank; and to study the role of customer intimacy in increasing satisfaction and encouraging loyalty of Islamic bank customers in using e-banking and m-banking.

Design/methodology/approach

Data collection is carried out by the self-administered survey method with Islamic bank customers as target population. Multivariate analysis of variance and multiple linear regression are applied for data analysis.

Findings

Customer intimacy not only encourages the emergence of customer loyalty directly, but also affects the factors that determine customer loyalty itself, such as perceived usefulness, perceived ease of use, perceived risk, trust, sharia compliance and satisfaction. In other words, customer intimacy has a direct and indirect influence on loyalty.

Originality/value

This paper offers an extended TAM constructs to study the role of customer intimacy in increasing loyalty by considering various variables, namely, perceived risk, trust, Sharia compliance and satisfaction. Similar research is still very limited in the banking marketing literature, especially in Islamic banks context.

Details

Journal of Islamic Marketing, vol. 12 no. 6
Type: Research Article
ISSN: 1759-0833

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Article
Publication date: 2 March 2015

Heba Abdelrazik Mohamed and Mona Hassan Abdel Rehim

– The purpose of this paper was to protect carbon steel from corrosion with self–aggregated, eco-friendly, water-soluble hyperbranched polyamide-ester (Hb-PAE).

191

Abstract

Purpose

The purpose of this paper was to protect carbon steel from corrosion with self–aggregated, eco-friendly, water-soluble hyperbranched polyamide-ester (Hb-PAE).

Design/methodology/approach

Hb-PAE was synthesized through bulk polycondensation reaction between maleic anhydride and di-isopropanol amine. Complete structural analysis for the obtained polymer was performed using Fourier Transfer Infra-Red Spectroscopy, 1H NMR, Thermal gravimetric analysis (TGA) and differential scanning calorimetry, and the molar mass was measured using gel permeation chromatography/refractive index. For this study, the surface activity of Hb-PAE with hydroxyl end groups was investigated. Surface tension of 1.0 × 10−6 to 0.1M of both Hb-PAE/H2O and Hb-PAE/1N HCl systems was measured, and the critical aggregation concentration (CAC) in both systems was determined. Hb-PAE was examined as a corrosion inhibitor for plain carbon steel in both neutral (distilled water) and acidic (1N HCl) media. The corrosion of the steel was studied quantitatively by measuring its weight loss in both media in the absence and presence of Hb-PAE. The surface morphology of the exposed steel test samples was examined using scanning electron microscopy.

Findings

It was found that Hb-PAE inhibited corrosion of steel around the CAC, and its corrosion inhibition efficiency was increased by increasing its concentration.

Originality/value

The research can provide a reference for the relationship between the aggregation concentration of the prepared Hb-PAE with its corrosion inhibition efficiency on plain carbon steel. Hb-PAE as a corrosion inhibitor is environmentally acceptable, economical and readily available.

Details

Anti-Corrosion Methods and Materials, vol. 62 no. 2
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 26 December 2023

Atanu Manna, Subhajit Pahari, Debasish Biswas, Dipa Banerjee and Debasis Das

The study principally aims to investigate the relationship among work–life balance (WLB), job satisfaction (JS) and employee commitment (EC) among the railway staff by integrating…

250

Abstract

Purpose

The study principally aims to investigate the relationship among work–life balance (WLB), job satisfaction (JS) and employee commitment (EC) among the railway staff by integrating the social exchange theory (SET). The study also explores JS as a mediator in the context of the new normal.

Design/methodology/approach

A mixed-method sequential explanatory design was utilized for this study. The research instrument was administered to 533 railway employees, using purposive sampling to ensure reliability and validity. Structural equation modeling (SEM) was employed to analyze the quantitative data and measure mediation effects. Additionally, 15 interviews were conducted with employees from three job positioning groups (A, B and C) to gain further insights into commitment-related concerns.

Findings

The study found that WLB and JS positively influenced EC, with JS acting as a mediator between WLB and EC. Furthermore, factors such as fostering friendships among colleagues, effectively managing work–life integration and recognizing the importance of job roles were identified as crucial in enhancing the relationship between WLB and EC.

Originality/value

The study includes SET to examine the social exchange process while considering WLB benefits as a reward from the employer and EC as the outcome of this reward. This study contributes by examining the effects of COVID-19 on the railway industry and EC. The mixed-methods sequential explanatory design gave a comprehensive understanding of the relationships between WLB, JS and EC. The study’s implications highlight the importance of implementing supportive policies, such as flexible work schedules and a supportive organizational culture, to enhance employee commitment and reduce attrition rates. The study emphasizes the significance of prioritizing employee well-being to achieve organizational goals and enhance organizational commitment.

Details

Kybernetes, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0368-492X

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Article
Publication date: 1 November 1980

W.G. HEATH, DipAe, CEng, E FIMech and FRAeS

The playwright identified seven roles for man to play as his life unfolded. In the realm of airworthiness, it is possible to identify six roles for structural testing as a project…

38

Abstract

The playwright identified seven roles for man to play as his life unfolded. In the realm of airworthiness, it is possible to identify six roles for structural testing as a project completes its life cycle. These roles coincide with the six phases of development of a project:

Details

Aircraft Engineering and Aerospace Technology, vol. 52 no. 11
Type: Research Article
ISSN: 0002-2667

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Executive summary
Publication date: 3 June 2021

CYPRUS: Elections will reinforce divisions

Details

DOI: 10.1108/OXAN-ES261888

ISSN: 2633-304X

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Topical
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Book part
Publication date: 16 October 2023

Aashna Khurana, Martin Scanlan, Julia Bott and Ethan d'Ablemont Burnes

Historically, learners labeled with disabilities have been denied equal access to and opportunities in mainstream classrooms. Globally, the task of addressing marginalization…

Abstract

Historically, learners labeled with disabilities have been denied equal access to and opportunities in mainstream classrooms. Globally, the task of addressing marginalization entails two main approaches. Firstly, there is a need to prevent stigmatization, discrimination, and neglect. Secondly, efforts must be directed toward establishing structures and systems that enable complete and meaningful involvement within educational institutions and various sectors. Educational inequality is associated with various aspects of identity beyond disability status. Factors such as culture, language, race, and gender impact the classroom experiences of children. Consequently, schools must adopt an intersectional approach in their quest to deliver effective, accessible, and inclusive education to all children. Building from the work of UNESCO, we define inclusivity as a transformative process of educators ensuring that all children experience high-quality learning opportunities that respect and value multiple dimensions of diversity. This chapter describes an emerging research–practice partnership focused on organizational learning advancing inclusivity. The partnership is premised on supporting central office administrators and the school-based inclusion planning teams (IPTs) in a public school district implementing a comprehensive reform of their service delivery model for students labeled with disabilities. It involves supporting administrators in Boston Public Schools (BPS) in fine-tuning a theory of action (ToA), designing organizational learning processes to enact this ToA, and evaluating the efficacy of the initiative in advancing effective, inclusive education for students labeled with disabilities.

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Expert briefing
Publication date: 26 March 2021

Mamata Banerjee’s All India Trinamool Congress (TMC) has governed the state for a decade. It faces a tough challenge in the upcoming poll from Prime Minister Narendra Modi’s…

Details

DOI: 10.1108/OXAN-DB260474

ISSN: 2633-304X

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Expert briefing
Publication date: 9 March 2021

Prime Minister Narendra Modi’s Bharatiya Janata Party (BJP) governs in Assam with the support of National Democratic Alliance (NDA) partners, while another NDA party rules in…

Details

DOI: 10.1108/OXAN-DB260064

ISSN: 2633-304X

Keywords

Geographic
Topical
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