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The purpose of this paper is to investigate the performance of natural Jordanian zeolite tuff to remove ammonia from aqueous solutions using a laboratory batch method and fixed-bed column apparatus. Equilibrium data were fitted to Langmuir and Freundlich models.

Column experiments were conducted in packed bed column. The used apparatus consisted of a bench-mounted glass column of 2.5 cm inside diameter and 100 cm height (column volume = 490 cm3). The column was packed with a certain amount of zeolite to give the desired bed height. The feeding solution was supplied from a 30 liter plastic container at the beginning of each experiment and fed to the column down-flow through a glass flow meter having a working range of 10-280ml/min.

Ammonium ion exchange by natural Jordanian zeolite data were fitted by Langmuir and Freundlich isotherms. Continuous sorption of ammonium ions by natural Jordanian zeolite tuff has proven to be effective in decreasing concentrations ranging from 15-50 mg NH₄-N/L down to levels below 1 mg/l. Breakthrough time increased by increasing the bed depth as well as decreasing zeolite particle size, solution flow-rate, initial NH₄+ concentration and pH. Sorption of ammonium by the zeolite under the tested conditions gave the sorption capacity of 28 mg NH₄-N/L at 20°C, and 32 mg NH₄-N/L at 30°C.

This research investigates the performance of natural Jordanian zeolite tuff to remove ammonia from aqueous solutions using a laboratory batch method and fixed-bed column apparatus. The equilibrium data of the sorption of Ammonia were plotted by using the Langmuir and Freundlich isotherms, then the experimental data were compared to the predictions of the above equilibrium isotherm models. It is clear that the NH₄+ ion exchange data fitted better with Langmuir isotherm than with Freundlich model and gave an adequate correlation coefficient value.

The purpose of the study is to examine the sliding wear performance of plasma transfer arc (PTA) deposited and laser surface melted (LSM) Mo modified Stellite 12 hardfacings under high contact stresses (i.e. >20 GPa).

For this purpose, after structural characterization, sliding wear tests have been conducted using sphero-conical diamond indenter as the counterface with different normal loads. The wear tracks formed on the hardfacings were examined by atomic force microscopy and scanning electron microscopy.

Both hardfacings showed severe wear (at high contact stress levels ranging from 24 to 41 GPa), which progressed by plastic deformation, although the wear resistance of LSMed hardfacings was better than the PTA hardfacings by a factor of two due to its near surface microstructure characterized as carbide-rich zone.

Sliding wear characterization of a promising 10 Wt.% Mo modified version of commercial Stellite 12 hardfacings (as reported previously by authors) was done in as PTA and LSMed states using nanomechanical test system. To the best of authors’ knowledge, no report is available in the open literature on such hardfacings under these testing conditions.

The study assesses the livelihood resilience strategies among street hawkers during COVID-19 lockdown in the Awutu Senya East Municipality in Ghana.

Using the explanatory case study approach, 12 participants (hawkers) were sampled with the aid of the purposive and convenience sampling techniques. An interview guide was used to collect data.

The study found that street hawking business, prior to the COVID-19 lockdown was a lucrative venture. The COVID-19 lockdown however had mental, psychological and economic effects on the street hawkers in ASEM causing stress, anxiety. loneliness, loss of business capital, and loss of jobs. Hawkers nevertheless demonstrated resilience in their psychological well-being by adopting strategies such as patronizing digital/social media platforms for funny content and entertainment. Hawkers also showed economic resilience through selling products on digital/social media platforms, relied on personal savings, received social support from family members and religious bodies. Government policies and interventions in the form of free water and electricity played a crucial role in building resilience of street hawkers during the COVID-19 lockdown.

The study shows that hawking is a vital avenue for entrepreneurial engagement reducing barriers to entry in formal trading, hence should be considered as key economic venture in the country’s economy. Again, the findings of the study deepen the understanding of stakeholders on the effects of COVID-19 on the psychological and economic life of street hawkers and offers insights into managing both psychosocial and financial stress during crises, emphasizing the potential benefits of resilient strategies for more effective crisis management. The study findings provide insights for government and policymakers on the experiences and coping mechanisms of the vulnerable groups and communities, particularly hawkers during the pandemic.

The study qualitatively assesses the psychological and economic effects of the COVID-19 lockdown and the livelihood resilience strategies employed by street hawkers during the COVID-19 lockdown in ASEM, Ghana.

Salinity is one of the major problems in the coastal region of Bangladesh that contributes to 20% of the total land area. About 53% of the coastal region is affected by different degrees of salinity. Salinity intrusion in this area is mainly derived through climate change as well as anthropogenic factors that make this region more vulnerable. Hence, salinity intrusion has adverse effects on water, soils, agriculture, fisheries, ecosystem, and livelihoods of this region. To ensure the availability of food as well as drinking water, this chapter highlights how individual and community people have endeavored several adaptation measures to minimize salinity effects. Moreover, it further discloses governmental and other development organizations’ actions toward salinity to reduce its impacts.

This study aims to quantify the cost of rebalancing Sharīʿah-compliant indexes, both economically and statistically.

An empirical approach is employed where the rebalanced Sharīʿah-compliant index is calculated numerous times with different lags in rebalancing, and the number of stocks and their cost across time are determined in order to identify the optimal rebalancing frequency.

This paper finds that annual Sharīʿah rebalancing does not lead to significant differences in portfolio returns, even though it does bring some advantages in cumulative wealth starting from the third year onwards and brings about better risk-return characteristics measured in terms of the Sharpe ratio. However, these advantages involve an average annual shifting between 30 and 60% of the portfolio market capitalization, which would be costly at any level of transaction costs.

A private investor may be better off holding a constant portfolio and only rebalancing in three-year intervals since this was shown to possess similar portfolio returns and cumulative wealth results. Any advantages of annual rebalancing in terms of risk-return characteristics may be offset by transaction costs of rebalancing. Sharīʿah scholars and practitioners are to determine when the correct time for rebalancing really is, taking into consideration the cost of rebalancing vis-à-vis the advantages in cumulative wealth and risk-return characteristics of the portfolio.

Predictions that Islamic indexes will perform well during financial crises, such as the COVID-19 pandemic, miss the cost of frequent rebalancing. This paper addresses this issue in an empirical manner learning from the previous crisis in 2008.

The use of social media has increased during the COVID-19 pandemic. Social media platforms provide opportunities to share news, ideas and personal stories. Twitter is used by citizens in Pakistan to respond and comment on emerging news stories and events. However, it is not known whether Twitter played a positive or negative role in spreading updates and preventive messages during the COVID-19 pandemic. The purpose of this study is to analyse content from Twitter during the pandemic.

NodeXL was used to retrieve data using the keyword وائرس کورونا (written in Urdu and which translates to Coronavirus). The first data set (Case Study 1) was based on 10,284 Twitter users from the end of March. The second data set (Case Study 2) was based on 10,644 Twitter users from the start of April. The theoretical lens of effective message framing was used to classify the most retweeted content on Twitter.

Twitter was used for personal and professional projections and included certain tweets included political motives even during the unfolding health crisis. There appeared to be very few successful attempts to use Twitter as a tool for health awareness and risk communication. The empirical findings indicate that the most retweeted messages were gain-framed and can be classified as personal, informative and political in nature.

The present study provides insights likely to be of interest to researchers, health organizations, citizens, government and politicians that are interested in making more effective use of social media for the purposes of health promotion. The authors also provide novel insights into the key topics of discussions, websites and hashtags used by Pakistani Twitter users during the COVID-19 pandemic.

The main purpose of this study is to propose an Islamic model of human behavioral analysis that can explain the determinants such as Islamic moral values, internal factors (e.g. self-efficacy or reasons for and against), external factors (e.g. perceived social support or others from external sources) and empathy (EMP) (humane attitude) to predict niyyah (worshipful intention) toward actual behavior (a’mal) in question.

With this end in mind, this research uses the theory of Islamic entrepreneurship and behavioral reasoning theory as their theoretical foundations. To validate the model, the study uses empirical data on investors’ intention toward sukuk (Islamic bonds or Shari’ah-compliant bonds) purchase in the context of Bangladesh, where very recently the sukuk were introduced by the Central Bank.

Findings of the study indicate that Islamic values and internal factors have the highest effects on external factors and EMP, respectively. Internal factors and Islamic values have moderate and almost similar impacts on EMP. Besides, external factors and EMP have somewhat equally moderate effects on niyyah. Islamic moral values and internal factors have the least influence on internal factors and niyyah, respectively. The external factor is also found to be insignificant to influence EMP. The findings also indicate that EMP, internal control factors and external control factors have mediating effects on niyyah toward sukuk purchase.

These results imply that the present research model successfully predicts and explains the determinants of Islamic worshipful intention toward the actual purchase of sukuk.

Sukuk has been an important Islamic financial instrument that has been growing much rapidly in recent times. So, this paper will help to comprehend that pattern empirically.

Islamic finance has emerged as a dominant financial tool nowadays. This paper contributes to advance that initiative one step further in terms of social and economic development.

This is a conceptual paper written in the area of Islamic Finance. This model has been validated by collating primary data collected from the selected respondents residing in Bangladesh.

The purpose of this paper is to investigate the factors that are significant in contributing to the per capita income growth of countries that are experiencing or have experienced the lower-middle and upper-middle income traps.

The study comprises 85 countries over the period 1960 to 2017 spanning across three income groups: lower-middle, upper-middle and high. A panel data structure was used to run a fixed effect and random effect estimation on three models of income groups. The Hausman specification test, which was used for further statistical fitness, confirmed the appropriateness of fixed effect over the random in explaining the estimation of factor variables.

The results show that unemployment is a pervasive problem that negatively affect countries at all income levels. Foreign direct investment and population of dependents are associated with economic progression of countries that have experienced or are experiencing the lower-middle income trap. Furthermore, rising income inequality and foreign aid assistance are detrimental to countries that have experienced or are experiencing the upper-middle income trap. Moreover, income inequality, disproportionate urban population and rising dependent population are damaging for high income countries that never experienced any of the middle-income traps. Conversely, openness to trade, inflation and exchange rate volatility had limited capacity in explaining growth dynamics.

This study could not incorporate geopolitical, demographic, geographical and other such exogenous factors, which could have episodes of influences on the economic development of countries. These were outside the study's realm of quantitative analysis.

This paper contributes to existing literature by providing an empirical cross-sectional comparative analysis of countries belonging to different income groups. The prevailing literature lacks such a cross-tabulated presentation of factors affecting countries that avoided the middle income trap and those that could not.

The purpose of this paper is to respond to Modell’s arguments regarding the relative usefulness of critical realist philosophy in relation to actor-network theory.

The authors outline the challenges in applying critical realism to critical accounting. The authors then consider Modell’s criticisms of actor-network theory, providing a counterargument highlighting the methodological choices distinguishing actor-network theory from critical realism.

The authors argue that critical realism, whilst providing an interesting addition to the critical accounting research project, confronts challenges disentangling intransitive and transitive forms of knowledge. Actor-network theory is presented as a way of examining accounting practices as local associations, providing practical opportunities to study (the assembly of) “the social”.

Methodological diversity is to be explored, acknowledging the ontological politics of our choices.

This paper is an original commentary contributing to critical accounting research.

The purpose of this paper is to determine the prevalence of Alcohol Use Disorders (AUDs) among Myanmar male migrant workers (> 15 years) living in Mae Sot, Thailand, and their patterns of drinking.

A cross-sectional survey was administered to 512 participants to measure AUDs and drinking patterns. ANOVA and χ² analyses were performed to assess demographic differences between abstainers, harmful and hazardous drinkers (HHDs) (those showing signs of AUDs) and non-harmful drinkers.

Results showed that 12.3 percent of male Myanmar migrants were HHDs, a rate only slightly higher than in Thai men (9.1 percent), but much higher than in men still living in Myanmar (2.7 percent) (WHO, 2014). Also, 19 percent of alcohol-consuming Myanmar male migrant workers reported patterns of heavy episodic drinking, which is markedly higher than in alcohol-consuming Thai (4.7 percent) and Myanmar men (1.5 percent) (WHO, 2014).

Given the health risks associated with AUDs and heavy episodic drinking, the findings of this study suggest a need for appropriate alcohol-related health education and intervention for Myanmar male migrant workers.