e-Business Value Creation: An Exploratory Study

Value creation is one of the most important issues in formulating e-business strategies. Value is a construct that is hard to define and even harder to model and understand. This paper provides a framework of theoretical analysis that helps the scholars to think about the concept of value creation in the new digital economy. Researchers and practitioners are struggling to identify factors that contribute in creating e-business value. This paper also evaluates these factors with a focus on value creation from adopting e-business in the firms. The presented evaluation is mined from the literatures and from our own experience in e-business strategies. The paper provides a theoretical survey for exploring the common ground between factors that create such a value. The introduced survey covers perspectives, definition, sources and drivers of e-business value creation

Development of MIS Courses through knowledge Management: An e-learning project for Online Delivery by the Ministry of Education in Jordan

In this era of information, traditional practices, technologies, skills, and knowledge are becoming obsolete at a much faster pace than ever before. The technological pace and the advent of the knowledge society will set in the next years the new context for e-learning evolution. This makes lifelong learning a necessity for everyone. An e-learning project is a promising solution to the demand for a flexible means of delivering knowledge to educate a large number of people over a vast area. MIS-Online project is an e-learning project in ministry of education in Jordan. The main objective of the project is to develop e-materials based on the curriculum of the Management Information Stream (MIS), which is an academic stream in the secondary schools. The adopted pedagogical model is project-based learning, through the development of different scenarios that link to different them

A study of the effectiveness of chemical additives on the characteristic flow of crude oils

This article aims to study the effect of the concentration with additives on the kinematic viscosity of crude oils. Additionally, the influence of solvents that reduces the viscosity of heavy oil with significance to their functions in the flow rate of crude oil, which is transported by conveyor pipes to long distances. Different concentrations of polymers with different types named as Polyvinyl chloride (PVC), Sodium dodecyl sulfate (SDS) and Carboxymethyl cellulose (CMC) were tested in order to analyze the experimental data. The results demonstrate that the impact of the additives to the viscosity and comparing at different temperatures. The data can be used to investigate the types of additives that can increase or reduce the viscosity of crude oils. Furthermore, the outcomes show that the addition of PVC at a concentration of (100ppm) and temperature range (30-50 CO) reduces the viscosity of crude oil to the ultimate value the 12.63% at 30Co. However, the viscosity decreases drastically up to (100ppm), and then the amount of viscosity is increased

Nano-Magnetic Catalyst CaO-Fe3O4 for Biodiesel Production from Date Palm Seed Oil

A nanocatalyst of CaO supported by Fe3O4 magnetic particles was prepared by a chemical precipitation method. It was characterized by various techniques including X-ray diffraction, transmission electron microscopy (TEM), scanning electron microscopy (SEM); Fourier transforms infrared spectroscopy (FTIR), and Hammett indicator. It has been found that the catalyst consists of CaO and Fe3O4 accompanied by CaFe2O4. This composite catalyst was used for the catalytic transesterification of palm seed oil. The results revealed that the highest biodiesel yields for palm seed oil of 69.7% can be obtained under the conditions of (65 °C reaction temperature, 300 min reaction time, 20 methanol/oil molar ratio, and 10 wt.% of CaO/Fe3O4 catalyst loading). The physicochemical properties of the biodiesel produced from palm seed oil were further studied and compared with the ASTM and the EN biodiesel specifications. The results showed that the properties of the biodiesel produced comply with the international standard specifications.

Antimalarial use in managing COVID-19 in the context of Glucose-6-Phosphate-Dehydrogenase G6PD deficiency

BackgroundThe use of certain medications in G6PD deficient patients can trigger an oxidative stress which can lead to haemolytic anaemia. Recently, in a few countries, Chloroquine and Hydroxychloroquine; drugs that are indicated for prevention and treating malaria have been used in the management of COVID-19 patients. Evidently, the use of chloroquine and hydroxychloroquine can cause negative impact to the haemolytic status of COVID-19 G6PD deficient patients.AimsThe aim of this mini review was to provide an overview of the use of antimalarial agents in the management of COVID-19 G6PD deficient patients.Methods We conducted a review of the literature that has examined the use of antimalarial agents in the management of COVID-19 G6PD deficient patients.Results Chloroquine and hydroxychloroquine have been found to exhibits an antiviral activity against several viral infections including human coronaviruses. Many countries have implemented the use of Chloroquine and Hydroxychloroquine in managing COVID-19 patients. However, according to published case reports, the use of Chloroquine and hydroxychloroquine have been shown to worsen the haemolytic status in G6PD deficient patients.ConclusionCOVID‐19 infection can trigger severe acute haemolytic crisis in G6PD‐deficient patients which can be worsened by chloroquine and hydroxychloroquine. Thus, physicians should be aware to this possible adverse event particularly in countries with high prevalence of G6PD deficiency

The Dictionary Use at the University of Kufa: A Case Study

It seems self- evident that dictionary consultation constitutes an important stage in the process of language learning. Dictionaries provide students with valuable information in all aspects of language. They include phonological, morphological, syntactical and semantic information in addition to etymological and usage information (Al-salami,1988). Unfortunately, students are unable to make full use of the vast amount of information provided in dictionaries. The reason behind that is the inadequate training of learners in the use of dictionaries (Berwick and Horsfal ,(1996); Wright, (1998); Nesi , (2000). If we want our students to be efficient users of dictionaries we have to know how they use these sources of information. Very little is known about the behaviour and preferences of dictionary users and the complex operation involved in a dictionary consultation(Hartmann and James, (1998).This paper discusses the results of a questionnaire distributed to a random sample of students of University of Kufa regarding the types of dictionaries used, the frequency of use, the main reason for consultation……etc.The final conclusion reached is that our students do not make full use of the riches found in the dictionaries and they are not trained on how to make full use of the dictionary.We suggest that the reference skill of our students should be developed through the teaching of lexicography at all stages and the training on dictionary use

Nano-Magnetic Catalyst CaO-Fe3O4 for Biodiesel Production from Date Palm Seed Oil

A nanocatalyst of CaO supported by Fe3O4 magnetic particles was prepared by a chemical precipitation method. It was characterized by various techniques including X-ray diffraction, transmission electron microscopy (TEM), scanning electron microscopy (SEM); Fourier transforms infrared spectroscopy (FTIR), and Hammett indicator. It has been found that the catalyst consists of CaO and Fe3O4 accompanied by CaFe2O4. This composite catalyst was used for the catalytic transesterification of palm seed oil. The results revealed that the highest biodiesel yields for palm seed oil of 69.7% can be obtained under the conditions of (65 °C reaction temperature, 300 min reaction time, 20 methanol/oil molar ratio, and 10 wt.% of CaO/Fe3O4 catalyst loading). The physicochemical properties of the biodiesel produced from palm seed oil were further studied and compared with the ASTM and the EN biodiesel specifications. The results showed that the properties of the biodiesel produced comply with the international standard specifications. Copyright © 2017 BCREC Group. All rights reserved Received: 25th January 2017; Revised: 11st July 2017; Accepted: 12nd July 2017; Available online: 27th October 2017; Published regularly: December 2017 How to Cite: Ali, M.A., Al-Hydary, I.A., Al-Hattab, T.A. (2017). Nano-Magnetic Catalyst CaO-Fe3O4 for Biodiesel Production from Date Palm Seed Oil. Bulletin of Chemical Reaction Engineering & Catalysis, 12 (3): 460-468 (doi:10.9767/bcrec.12.3.923.460-468

Overview on Blood Transfusion-Transmitted Diseases

As it is important for the Blood transfusion to be extremely safe, some measures have to be taken long safeguarded the blood supply from the major transfusion transmissible diseases (TTIs).  The risk of transfusion-transmitted infection (TTI) rises with the number of donors exposed, and the effects of TTI are frequently more severe in immune compromised people. TTIs (hepatitis B virus [HBV], HIV, and hepatitis C virus [HCV]) are examples of typical transfusion-transmitted infectious agents. As a result of the gradual application of nucleic acid-amplification technology (NAT) screening for HIV, HCV, and HBV, the residual risk of infected window-period donations has been minimized. Nonetheless, infections emerge far more frequently than is commonly acknowledged, needing ongoing surveillance and individual assessment of transfusion-associated risk. Although there is a constant need to monitor present dangers owing to established TTI, the ongoing issues in blood safety are mostly related to surveillance for developing agents, as well as the creation of quick reaction systems when such agents are detected

Development of Self-Regulation amongst Dental Students in Problem-based Learning Curricula: A Qualitative Study

To explore the value of problem-based learning in the development of self-regulation amongst undergraduate dental students. A qualitative approach using focus groups was used to explore the perceptions and experiences of the participants regarding the role of problem-based learning (PBL) in promoting self-regulation in undergraduate dental education. The study was carried out at a newly established dental institution in Qatar. Purposive sampling technique was used to recruit the participants. Invitations to potential participants were sent by e-mail through appropriate professional channels. All focus groups were transcribed verbatim, and data were imported into NVivo 12 and analysed thematically. A total of five focus groups were conducted with 37 participants which included 27 females and 7 males from two different cohorts. Participants expressed their views on a range of issues related to the self-regulation in problem-based learning and also provided recommendations to enhance the learning experiences of students. PBL was perceived to be an appropriate and effective strategy to support student autonomy in construction of knowledge and developing problem solving and interpersonal skills. However, the workload of the students can impact adversely on their motivation and time management skills. This study provides useful insights into the concept of self-regulation in problem-based learning environments as perceived by the stakeholders at a newly established dental institution. The findings of this study may offer clarity on how problem-based learning can be best utilised to promote self-regulation in undergraduate dental education.Open Access funding provided by the Qatar National Library

The Potential Association Between Inflammatory Bowel Diseases and Apical Periodontitis: A Systematic Review and Meta-Analysis.

Recent literature has suggested a potential association between inflammatory bowel diseases (IBD) and apical periodontitis (AP). The present systematic review and meta-analysis sought to analyse and appraise the available evidence regarding the reported association. Following 2020 PRISMA guidelines, a comprehensive search of multiple online databases (PubMed, Scopus, Web of Science, and Google Scholar) was conducted for all relevant studies published from the date of inception until 27 April 2023 using various relevant keywords. All observational studies that assessed the association between IBD and AP in humans were eligible for inclusion. The quality of the selected studies was carried out independently by two reviewers, and meta-analysis was performed using Comprehensive Meta-Analysis Version 2.2.064. Six studies (five case-control studies and one cohort study) were included. A total of 657 patients (277 with IBD) were included in 5 case-control studies, and 48,223 subjects (35,740 with AP) were included in the cohort study, where 188 developed IBD on follow-up. The pooled data from the five case-control studies revealed that IBD was significantly associated with a higher risk of AP (OR=1.71, 95% CI: 1.21-2.42; I2=10.337%, fixed-effect, p=0.002). The qualitative analysis also showed that most of the included studies found a higher mean number of teeth with AP in IBD groups than the healthy controls. Newcastle-Ottawa Scale (NOS)-based quality appraisal results demonstrated that five studies were of high quality, and one was of moderate quality. The results suggest a potential association between IBD and AP. Large-scale and prospective studies are required to further confirm and elucidate the nature of such an association