Nancy Sobh, Nagla Elshemy, Sahar Nassar and Mona Ali
Due to herbs and plants’ therapeutic properties and simplicity of availability in nature, humans have used them to treat a variety of maladies and diseases since ancient times…
Abstract
Purpose
Due to herbs and plants’ therapeutic properties and simplicity of availability in nature, humans have used them to treat a variety of maladies and diseases since ancient times. Later, as technology advanced, these plants and herbs gained significant relevance in some industries due to their suitable chemical composition, abundant availability and ease of access. Aegle marmelos is a species of plant that may be found in nature. Yet, little or very little literature was located on the coloration behavior of this plant’s leaves. This study aims to focus on the effect of different parameters on the extraction of colorant from Aegle marmelos leaves.
Design/methodology/approach
Some factors that affected on the extraction processes were examined and found to have significant impacts on the textile dyeing such as the initial dye concentration, extracted temperature, extracted bath pH and extracted time were all changed to see how they affected color extraction. The authors report a direct comparison between three heating methods, namely, microwave irradiation (MWI), ultrasonic waves (USW) and conventional heating (CH). The two kinetic models have been designed (pseudo-first and pseudo-second orders) in the context of these experiments to investigate the mechanism of the dyeing processes for fabrics under study. Also, the experimental data were analyzed according to the Langmuir and Freundlich isotherms.
Findings
From the result, it was discovered these characteristics were found to have a substantial effect on extraction efficiency. Temperature 90°C and 80°C when using CH and USW, respectively, while at 90% watt when using MWI, period 120 min when using CH as well as USW waves, while 40 min when using MWI, and pH 4, 5 and 10 for polyamide, wool and cotton, respectively, were the optimal extraction conditions. Also, the authors can say that wool gives a higher absorption than the other fabric. Additionally, MWI provided the best color strength (K/S) value, and homogeneity, at low temperatures reducing the energy and time consumed. The coloring follows the order: MWI > USW > CH. The adsorption isotherm of wool could be well fitted by Freundlich isotherm when applying CH and USW as a heating source, while it is well fitted by the Langmuir equation in the case of MWI. In the study, it was observed that the pseudo-first-order kinetic model fits better the experimental results of CH with a constant rate K1 = −0.000171417 mg/g.min, while the pseudo-second-order kinetic model fits better the experimental results of absorption of both MWI (K2 = 38.14022572 mg/g.min) and USW (K2 = 12.45343554 mg/g.min).
Research limitations/implications
There is no research limitation for this work. Dye was extracted from Aegle marmelos leaves by applying three different heating sources (MWI, ultrasonic waves [USWW] and CH).
Practical implications
This work has practical applications for the textile industry. It is concluded that using Aegle marmelose leaves can be a possible alternative to extract dye from natural resource by applying new technology to save energy and time and can make the process greener.
Social implications
Socially, it has a good impact on the ecosystem and global community because the extracted dye does not contain any carcinogenic materials.
Originality/value
The work is original and contains value-added products for the textile industry and other confederate fields.
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The purpose of this paper is to examine information technology and information systems (IT/IS) technology teaching and learning (T&L) as affected by three key factors of tacit…
Abstract
Purpose
The purpose of this paper is to examine information technology and information systems (IT/IS) technology teaching and learning (T&L) as affected by three key factors of tacit knowledge (TK). These factors are the de-contextualization, the faculty and students’ mental model gap and the intrinsic inability of faculty to teach what they know (i.e. the know-how-know what gap).
Design/methodology/approach
The approach is based on intensive literature review and synthesis of Nonaka’s socialization, externalization, combination and internalization model and other relevant knowledge management (KM) principles applied to understand the effects of mobilization and nurturing of TK in pedagogical activities and strategies.
Findings
This paper demonstrated a holistic view of the role of TK in teaching IT/IS through deep learning activities. It differentiates between faculty and student mental models and the ability of the faculty to convey real-world know-how to students.
Research limitations/implications
This study is by no means comprehensive in exploring the TK contextual dimensions of IT/IS T&L milieus. However, some of the assumptions and factors in this paper are not pertinent to some pedagogical environments.
Practical implications
The activities in this paper introduced new propositions on IT/IS teaching by focusing on TK concepts in light of its challenges. The study could be used by institutes to place emphasis on accommodating TK within effective IT/IS T&L activities.
Originality/value
Drawing on the KM literature and experience, this paper offers new insight into how TK can be innovatively incorporated into a pedagogical landscape.
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Wael Amin Nasr El-Din, Mona Hassan Mohammed Ali, Gisma Ahmed Madani and Islam Omar Abdel Fattah
Sex and age estimation is important, particularly when information about the deceased is unavailable. There are limited radiological studies investigating side, sex and age…
Abstract
Purpose
Sex and age estimation is important, particularly when information about the deceased is unavailable. There are limited radiological studies investigating side, sex and age differences in normal ankle morphometric parameters. The authors’ goal was to evaluate different ankle joint morphometric measurements and document variations among Egyptians.
Design/methodology/approach
A prospective study was conducted throughout 23 months on 203 (100 males and 103 females) adult Egyptians, aged between 20-69 years old, who were referred for a plain x-ray of bilateral normal ankle joints.
Findings
Ankle parameters showed no statistical difference between both sides, except for tarsal width (TaW) which was significantly higher on right than left side (26.92 ± 2.66 vs 26.18 ± 2.65 mm). Males showed significantly higher morphometric values except for anteroposterior gap (APG) and talus height (TaH) which were significantly higher in females (2.29 ± 0.80 vs 1.80 ± 0.61 mm and 13.01 ± 1.68 vs 11.87 ± 1.91 mm, respectively). There was significant increase in tibial arc length, APG, distance of level of MTiTh from anterior limit of mortise, distance of level of MTiTh from vertex of mortise, sagittal distance between tibial and talar vertices and sagittal radius of trochlea tali arc in old age group compared to young one. A significant decrease in tibial width, malleolar width, TaW and TaH was noted in old age group compared to young one.
Originality/value
Ankle joints of both sides are mostly symmetrical; however, there are significant differences in most morphometric values due to sex and age factors. These findings may be essential during side, sex and age determination.
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Ayman El-Anany, Rehab F.M. Ali, Mona S. Almujaydil, Reham M. ALgheshairy, Raghad Alhomaid and Hend F. Alharbi
This study aims to evaluate the nutrient content and acceptable qualities of plant-based burger patties (PBBP) formulated with chickpea flour, defatted sesame cake (DSC) flour…
Abstract
Purpose
This study aims to evaluate the nutrient content and acceptable qualities of plant-based burger patties (PBBP) formulated with chickpea flour, defatted sesame cake (DSC) flour, coffee silver skin and pomegranate juice as colorant.
Design/methodology/approach
The chemical composition, energy value, cholesterol content, amino acid composition, cooking loss, pH, color characteristics and sensory attributes of PBBP were analyzed using official procedures and compared to beef burger.
Findings
PBBP had a protein value of 16.0 g/100g, which is nearly close to the protein content of the beef burger (18.1 g/100g). The fat content of the PBBP was approximately three times lower than that of the beef burger. The fiber content in PBBP was approximately 23 times as high as that in beef burgers samples (p = 0.05). The raw PBBP samples supplies 178 Kcal/100g, whereas beef burger possessed 259 Kcal/100g. Neither the raw nor the cooked PBBP samples contained any cholesterol. Both the beef and PBBP displayed acceptability scores higher than 7.0, which suggests that PBBP was well accepted.
Originality/value
It is concluded that the PBBP sample exhibited a protein value of 16.0 g/100g, which is comparable to the protein level of beef burgers (18.1 g/100g). The fat level of the PBBP samples was significantly lower than that of the beef burger samples. Uncooked PBBP samples contained significantly higher fiber content compared to beef burger samples. No cholesterol was found in raw or cooked PBBP samples. Overall acceptance scores for both beef and PBBP samples exceeded 7.0, suggesting that the proposed product (PBBP) was received favorably.
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Shahd A.A. Alsayari, Rehab F.M. Ali, Sami A. Althwab and Mona S. Almujaydil
This study aims to assess the oxidative stability of avocado oil (AO) at various temperatures, using butylated hydroxytoluene (BHT) as an artificial antioxidant and different…
Abstract
Purpose
This study aims to assess the oxidative stability of avocado oil (AO) at various temperatures, using butylated hydroxytoluene (BHT) as an artificial antioxidant and different concentrations of ultrasonic extract of Chlorella vulgaris.
Design/methodology/approach
Extracts of C. vulgaris were obtained using four solvents: water, acetone, ethanol and 80% ethanol-aqueous. Standard techniques were used to conduct qualitative phytochemical screening of the extracts. The extracted samples were analyzed for total phenolics, total flavonoids, antioxidant activity and phenolic compound fractionation. Some physicochemical parameters of AO treated with various concentrations of C. vulgaris ultrasonic extract compared to a 200 ppm BHT and exposed to different temperatures were measured.
Findings
The highest phenolic, flavonoids content and antioxidant activity was achieved by 80% ethanolic extract of C. vulgaris . The results showed that exposure of AO to high temperatures led to significant changes in the oil's physicochemical properties. These changes increased as the temperature increased. On the other hand, adding 80% ethanolic extract of C. vulgaris into AO reduced the effect of heat treatment on the change in physicochemical properties.
Originality/value
Adding 80% ethanolic extract of C. vulgaris into AO can potentially reduce the impact of heat treatment on the alteration of physicochemical properties.
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The purpose of this paper is to contribute to the existing disclosure literature by examining the determinants of corporate risk disclosure (CRD) in the internet reporting for a…
Abstract
Purpose
The purpose of this paper is to contribute to the existing disclosure literature by examining the determinants of corporate risk disclosure (CRD) in the internet reporting for a sample of Egyptian listed companies on the Egyptian Stock Exchange (EGX).
Design/methodology/approach
This study depends on a sample of 76 Egyptian companies included in the EGX 100 in the period 2012-2014. The study applies a content analysis and uses a sentence-based method to measure CRD in the internet reporting. Ordinary least-squares regression analysis is used to examine the impact of firm and board characteristics on CRD in the internet reporting.
Findings
The empirical analysis shows that large Egyptian companies tend to disclose more risk information in their internet reporting. Moreover, the results indicate that there is a significant positive association between sector type and CRD in the internet reporting. The results show non-significant association between CRD and other firm characteristics (cross listing and level of risk). Finally, there are no significant associations between CRD and board characteristics variables (board size, board composition and CEO duality).
Research limitations/implications
The study’s findings have practical implications. It aids in informing policy makers considering implementing new economic reform programs about the properties of Egyptian companies that disclose risk information in their internet reporting. It provides insights on CRD in Egyptian companies for standards setters and professional authorities to improve risk reporting practices to help stakeholders in making good decisions.
Originality/value
This study is one of the first studies to examine the determinants of CRD in the internet reporting for a sample of Egyptian companies.
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Ali Akbar Haddadi Harandi, Mona Bokharaei Nia and Changiz Valmohammadi
The importance of e-literacy of staff in the digital life is fundamentally very crucial, to such an extent that it is considered as one of the primary conditions for successful…
Abstract
Purpose
The importance of e-literacy of staff in the digital life is fundamentally very crucial, to such an extent that it is considered as one of the primary conditions for successful utilization of knowledge management processes using social technologies within organizations. This study aims to explain and test a novel conceptual model to show the impact of applying social technologies on knowledge management (KM) processes in the context of Iranian organizations, considering the moderator role of e-literacy of employees.
Design/methodology/approach
Based on an in-depth study of the relevant literature, a questionnaire was designed. The sound questionnaires obtained from our sample size was 207 and respondents were experts in the field of information technology (IT) within the Central Office of Insurance companies in Tehran. The collected data were analyzed using structural equation modeling and path analysis.
Findings
The results indicate that the use of social technologies with the factor loading of 0.57 has the highest impact on knowledge exchange and 0.61 on knowledge utilization. In addition, the results indicate that e-literacy with the factor loadings of 0.69 and 0.74 has the highest impact on knowledge exchange and knowledge utilization, respectively. In addition, the impact of social technologies with the factor loading of 0.82 has the highest impact on e-literacy.
Research limitations/implications
One of the limitations of this study was the generalizability of the findings, which may be limited, as it is focused on one developing country. Also, the lack of full implementation of KM and the use of social technologies in the insurance industry may affect the obtained results.
Originality/value
To the best knowledge of the authors, this study is among the first of its kind which examines the impact of social technologies usage on the KM processes considering an important variable, i.e. e-literacy of employees.
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The purpose of this paper is to increase the awareness of attorneys-at-law about the potential risks that they may encounter as a result of the developments in “intermeddler…
Abstract
Purpose
The purpose of this paper is to increase the awareness of attorneys-at-law about the potential risks that they may encounter as a result of the developments in “intermeddler liability”. The article is also aimed at informing attorneys about the Proceeds of Crime Act (POCA) civil recovery machinery.
Design/methodology/approach
The article is divided into two parts. The first part involves an analysis of the provisions in the POCA of Jamaica that invoke a civil machinery to recover criminally obtained wealth. In addition to a review of the main provisions of POCA, an examination of recent cases in Jamaica and in the UK, which has a similar legislative regime, has been undertaken. The legislative framework for providing a remedy to a victim of crime has also been examined. The second part of the article explores developments in the law of restitution and the law relating to constructive trusts which may impact lawyers and financial intermediaries who become engaged in transactions dealing with illicit funds.
Findings
The first aspect of the article focuses on the ability of the Asset Recovery Agency to follow and recover illicitly obtained property in the absence of a criminal conviction. In the second part of the article, the evolution of the law relating to “intermeddler liability”, that is, knowing receipt and dishonest assistance, has been explored. It is observed that these developments are significant in providing a victim of financial crime with a remedy where the illicit activity involves a breach of trust or other fiduciary relationship.
Originality/value
Much of the focus on anti-money laundering initiatives in Jamaica is on the money laundering offence and post-conviction orders under POCA. This article seeks to highlight the power of the civil law in countering serious crime.
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The purpose of this study is to provide an overview of some of the deficiencies in the criminal justice system in Jamaica, particularly relating to financial crime. The author…
Abstract
Purpose
The purpose of this study is to provide an overview of some of the deficiencies in the criminal justice system in Jamaica, particularly relating to financial crime. The author also examines possible alternatives in the approach that may be taken in tackling financial crime.
Design/methodology/approach
The methodology used was a review of data on financial crime in Jamaica as well as recent significant cases. An analysis of key pieces of legislation was also undertaken. In some instances, a comparative approach was invoked, with special reference to the UK and US laws.
Findings
Some essential findings include the positive impact that may be gained from restorative justice principles, the effective enforcement of asset recovery provisions and stricter regulation of the financial services industry.
Originality/value
There is no similar comprehensive examination of these issues concerning Jamaica.
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Ali Davari, Mona Zehtabi, Mostafa Negati and Mohammad Ehsan Zehtabi
Entrepreneurship development is known as a key enabler of economic development, hence it has been contemplated in the strategic plans of various countries. Iran is no exception in…
Abstract
Purpose
Entrepreneurship development is known as a key enabler of economic development, hence it has been contemplated in the strategic plans of various countries. Iran is no exception in that regard, since developing entrepreneurship has been emphasized in the country's third and fourth development plans, in order to tackle the increasing rate of population growth and unemployment. Now, as the fourth development plan has come to its end, it is necessary to evaluate the policies and programs related to entrepreneurship. The purpose of this paper is to assess the entrepreneurial development plans of this important Middle East country to provide a benchmark of influential policies on entrepreneurship development at both macro and micro level and to evaluate them accordingly.
Design/methodology/approach
Quantitative methods, namely survey and questionnaire distribution among experts dealing with entrepreneurship subjects have been used as the main method for data collection.
Findings
The results reveal that influential entrepreneurship policies at both macro and micro levels are not generally forward‐looking and supportive of entrepreneurship development. Therefore, some suggestions have been provided to develop these policies.
Originality/value
The paper presents findings of research which come from a rapidly‐growing, developing country, which can provide better insights from a less‐explored context and further add to the body of knowledge.