Shahjalal University of Science and Technology
Recent publications
Background: Malnutrition is considered a major public health challenge and is associated with a range of health issues, including childhood stunting. Stunting is a reliable and well-recognized indicator of chronic childhood malnutrition. The objective of this study is to determine the risk factors associated with stunting among 17,490 children below five years of age in Bangladesh. Methods: Correlates of child stunting were examined using data generated by a cross-sectional cluster survey conducted in Bangladesh in 2019. The data includes a total of 17,490 children (aged < 5 years) from 64,400 households. Multiple logistic regressions were used to determine the risk factors associated with child stunting and severe stunting. Results: The prevalence of stunting and severe stunting for children was 25.96% and 7.97%, respectively. Children aged 24 to < 36 months [Odds Ratio (OR) = 2.65, 95% CI: 2.30, 3.05] and aged 36 to < 48 months [OR = 2.33, 95% CI: 2.02, 2.69] had more risk of stunting compared to the children aged < 6 months. Children from Sylhet division had the greatest risk of stunting of all the eight divisions [OR = 1.26, 95% CI: 1.09, 1.46]. Children of secondary complete or higher educated mothers were less likely to develop stunting [OR = 0.66, 95% CI: 0.56, 0.79] compared with children of mothers having no education at all. Similarly, children of secondary complete or higher educated father [OR = 0.74, 95% CI: 0.63, 0.87] were found to have lower risk of stunting compared with children whose father hadn't any education. Substantially lower risk of stunting was observed among children whose mother and father both completed secondary education or above [OR = 0.59, 95% CI: 0.52, 0.69]. Children from the richest households [OR = 0.49, 95% CI: 0.41, 0.58] had 51% lower odds of stunting compared to children from the poorest households. Conclusions: After controlling for socioeconomic and demographic factors, parental education and household position in the wealth index were found to be the most important determinants of child stunting in Bangladesh.
In the present paper, we introduce the concepts of Jacobi polynomials and intersection enumerators of codes over Fq and Zk for arbitrary genus g. We also discuss the interrelation among them. Finally, we give the MacWilliams type identities for Jacobi polynomials.
Slightly acidic electrolyzed water (SAEW) has recently gained a lot of interest as a chlorine sanitizer which provides higher decontamination effect with minimum available chlorine. Nevertheless, microbial reductions via only SAEW treatment are not sufficient to assure safety. Hence, it is required to enhance the disinfection efficacy by combining with other compatible techniques. In the present study, SAEW with a pH of 5.5-5.6, available chlorine content (AAC) of 20-22 mg/L, oxidation-reduction potential of 900-950 mV was applied on fresh-cut cauliflower to determine the microbicidal activity. SAEW was also applied in combination with ultrasound treatment (US) and moderate heat (45 • C) to enhance the decontamination efficacy of SAEW. The impacts of individual (SAEW) and combined treatments like (SAEW + US), (SAEW + US + mild heat 45 • C) on microbial population, physicochemical, and antioxidant properties of cauliflower were evaluated. The combined treatment of SAEW, US and mild heat showed better effectiveness on microbial decontamination compared to SAEW treatment alone, and SAEW with US (SAEW + US) treatment but significantly reduced the antioxidant and phytochemical properties of fresh cauliflower. However, SAEW with US treatment (SAEW + US) preserved the bioactive compounds and antioxidant activity with significant reduction of microbial load. The present study revealed that combination of SAEW with US treatment can be a promising decontamination technique to improve postharvest quality and safety of fresh produce.
This interview conducted with Mohammad A. Quayum from October 2021 to February 2022 focuses on a wide range of issues in literary translation and Translation Studies. Quayum is one of the leading academics and translators from Bangladesh, currently teaching at Flinders University, Australia.A renowned professor of English literature teaching in various countries, including Australia, Bangladesh, Malaysia, Singapore, and the US, Quayum has published numerous books and scholarly articles in renowned journals. His works have also drawn critical attention as they have been published by Brill, Penguin Books, Routledge, Springer and Stanford University Press. Quayum has already translated and published major writers and poets of Bengali literature into English, including Rabindranath Tagore (1861–1941), Rokeya Sakhawat Hossain (1880–1932) and Kazi Nazrul Islam (1899–1976). In this interview, Quayum offers valuable insights about literary translation and his translated works. He argues that translation, which is an inter-lingual as well as inter-cultural activity, builds bridges between cultures. In his view, translators require clarity of mind and lots of free-floating energy to keep focused on their work. The interview touches upon Quayum’s deep involvement in research and translation activities, his thoughts on literary translation and Translation Studies, and the current state and prospects of literary translation in Bangladesh.
Metal oxide nanoparticles have attracted increased attention due to their emerging applications in cancer detection and therapy. This study envisioned to highlight the great potential of metal oxide NPs due to their interesting properties including high payload, response to magnetic field, affluence of surface modification to overcome biological barriers, and biocompatibility. Mammogram, ultrasound, X-ray computed tomography (CT), MRI, positron emission tomography (PET), optical or fluorescence imaging are used for breast imaging. Drug-loaded metal oxide nanoparticle delivered to the breast cancer cells leads to higher drug uptake. Thus, enhanced the cytotoxicity to target cells compared to free drug. The drug loaded metal oxide nanoparticle formulations hold great promise to enhance efficacy of breast cancer therapy including multidrug resistant (MDR) and metastatic breast cancers. Various metal oxides including magnetic metal oxides and magnetosomes are of current interests to explore cancer drug delivery and diagnostic efficacy especially for metastatic breast cancer. Metal oxide-based nanocarrier formulations are promising for their usage in drug delivery and release to breast cancer cells, cancer diagnosis and their clinical translations.
Moringa is regarded as a miracle tree because all components of the plant, including the roots, leaves, pod, and flowers, have significant nutritional and therapeutic value. Moringa oleifera Lam. pods have excellent antioxidant characteristics and are a good source of protein, carbohydrate, fat, vitamins, beta-carotene, amino acids, and phenolic compounds. The pods of Moringa oleifera Lam. were collected from the local market of Sunamganj, and their nutritional value was assessed in raw condition and after thermal processing. The goal of this research was to observe how the thermal temperature affected the antioxidant and physicochemical qualities of thermally-processed Moringa oleifera Lam. pods. Thermal treatment diminished the amount of crude protein, fat, carbohydrate, ash, ascorbic acid, and beta-carotene in the pods, as well as DPPH, total phenol content, and total flavonoid content. The moisture percentage of raw and thermally-processed Moringa oleifera Lam. pods was determined to be 83.12%, 86.03% with a total ash level of 2.01%, and 1.8%, respectively. The crude protein, fat content, and carbohydrate were 3.0%, 0.1%, and 3.2%, respectively, in thermally-processed pods. The values for total phenol content, total flavonoid content, vitamin C, DPPH free radical scavenging activity, and β-carotene were 28.13 mg, 2.98 mg, 38.23%, 3.98 mg, and 0.12 mg, respectively, in raw samples whereas 24.56 mg, 2.72 mg, 3.50 mg, 34.32%, and 0.0904 mg, respectively, in thermally-processed samples. According to the findings, Moringa oleifera Lam. pods have high nutritional content and thus can be used as an excellent source of diet, and even after thermal processing, a significant nutritive value remains in the Moringa oleifera Lam. pods.
Psychiatric disorders especially depression and anxiety are exponentially increasing in post-industrial society. Antibiotic exposure may partly attributable to the development of such psychiatric disorders reported in some animal studies. However, human epidemiological studies are rare. This review study aimed to summarize and explore the associations between antibiotic exposure and psychiatric disorders in human, scrutinize the research gaps, and draw the contemplate of future research. PubMed, Scopus, and Embase databases, and Google scholar search engine were searched for relevant articles using the exposure keywords “antibiotic exposure” and outcome keywords “psychiatric disorder” and associated medical subheading terms (MeSH). Human epidemiological studies were retrieved irrespective of age, race, country and publications year up to April, 2022. Finally, a total of 15 articles that fulfill our inclusion criteria were selected and summarized in the present review. This review summarized all types of associations between antibiotic exposure and psychiatric disorders along with effects of potent confounders. Most of the study found positive association between antibiotic exposure and psychiatric disorder especially with depression and anxiety even after adjustment with major lifestyle and demographic factors. The associations might be depended on gender, age, antibiotic types and type of bacterial infections. The magnitude of these associations was higher for higher doses, more frequent uses and recent uses of antibiotics. Our summarized evidences indicate that antibiotic exposure might be associated with depression and anxiety in human. However, nation-wide prospective cohort using human biomonitoring of antibiotics is warranted to explore the overall scenario in future.
Assembly line balancing is always a critical responsibility for manufacturers as it controls the efficiency and productivity of the assembly line. There are many techniques to solve line balancing problems, some of which are revealed in the literature review section, but computer-aided simulation modelling is prevalent among them. This study aims to analyze an assembly line balancing problem of stochastic nature using a discrete event simulation software (Arena) for the optimal solution and sensitivity analysis of the solution. The empirical study was carried out at Arunima Sportswear Limited garment factory, and a garment style (kid’s pants) with 21 operations was taken into account. First, the computer model was verified by line supervisors and validated by a statistical hypothesis test (t-test). Then, using the Arena OptQuest tool, an optimal solution to the model is achieved. Finally, a sensitivity analysis is performed by varying the values of some key factors (i.e. entities per arrival, process failure time, and operators’ absenteeism) to determine the level of uncertainty of the model.
The magnitude of human affliction brought about by bacterial infections has been on the rise since the mid-5th century. Yersinia pestis is one such notable, gram-negative bacterium that inflicted havoc around the globe three times throughout different millenniums by causing deadly plagues. Despite the unremitting efforts by scientists, different strains of Yersinia pestis are still affecting the populations in various parts of the world by growing resistant to existing antimicrobial agents owing to their overuse. The current scenario, therefore, calls for new therapeutics to further combat the disease. In this study, 3105 core, 387 pathogen-specific unique, 536 choke-point, 796 virulence factors, and 115 antimicrobial resistant proteins were found using a pan-genomic and subtractive genome analysis of nine Yersinia pestis strains that could be instrumental in the development of drugs against Yersinia pestis. Subsequently, 1461 and 1114 essential proteins were identified as non-homologous to human and gut microflora. 535 and 30 proteins were predicted as cytoplasmic and broad-spectrum targets respectively. Finally, four potential targets were selected for their high connectivity in protein-protein interaction network. These selected target proteins are associated with one of the major lipopolysaccharide biosynthesis pathways. Therefore, dismantling their activity might indicate a probable strategy for developing therapeutics to combat bacterial infection caused by Yersinia pestis. However, further experimental validation in the laboratory is needed to consolidate the research findings.
Background Women confront a slew of issues following self-immolation, and it is crucial to examine how women react after self-immolation and live with their scars. Therefore, this study was conducted in Iran with the aim of exploring the coping strategies of Kurdish women following self-immolation using a qualitative methodology. Methods The conventional content analysis approach was used in this qualitative investigation. Semi-structured face-to-face and phone interviews were conducted with 26 Kurdish women who had self-immolated and were chosen using purposeful sampling and snowballing for this study. To reinforce the research, Guba and Lincoln's trustworthiness criteria were fulfilled. Results The data analysis yielded 2 categories, 11 subcategories, and 85 initial codes. Positive coping is one of the categories and subcategories (spirituality, rebuilding their body, psychological rehabilitation, hiding the scars, restoring self-confidence, changing the lifestyle, forming a new life) 2- Negative coping (separation from society, neglecting the body and mind, violence and aggression, staying in the past). Conclusion Using the capacity of religious organizations to help victims of self-immolation, providing appropriate conditions and facilities to heal the scars caused by self-immolation, and facilitating access to counseling services can provide the conditions for women to better adapt after self-immolation.
In this work, we offer a double-layered side-polished ultra-highly sensitive photonic crystal fiber (PCF)-based surface plasmon resonance (SPR) sensor for various biochemical analyte detection. Gold with titanium oxide (TiO2) as an adhesive layer has been employed acting as the plasmonic material. This study is fully based on simulation with finite element method for numerical inspection. Analyte channel along with a perfectly matched layer as the boundary condition has been placed at the outermost section of the sensor. After regulating different parameters, we attain a maximum wavelength and amplitude sensitivity of 138,800 nm/RIU and 2868 RIU−1, respectively, with a sensing range of 1.33–1.425 refractive indices of the analytes. Minimum wavelength resolution of 7.20 × 10–7 RIU is observed which ensures superior detection accuracy. In addition, the sensor achieves an ultra-high figure of merit (FOM) of 5783 RIU−1 which certifies an excellent detection limit. The FOM is the highest among all the previously reported PCF-SPR sensors to the best of the authors’ knowledge up to date. The sensor also reveals a very low average confinement loss of 2.40 dB/cm which assures practical feasibility by minimizing complexity associated with sensor length and splicing. A discontinuous plasmonic material layer has been used in the sensor which enhances cost-efficiency and sensitivity factor. On account of ultra-high sensitivity, low confinement loss, and excessive FOM, our proposed sensor can be very convenient and impressive in detecting various liquid biological and biochemical analytes.
Ceramic-supported graphene oxide membrane bioreactors have already shown their potential for the anaerobic decolorization of wastewater containing azo dyes. The primary goal of this investigation was to develop a mathematical model that would be able to describe the steady-state behavior of this biodegradation process. The developed model was calibrated and validated using independent experimental data sets with various dye structure, feed concentration, hydraulic retention time (HRT), and support materials on which the biofilm was grown. The calibrated and validated model was used to analyze the intrinsic mechanism of the process and the main finding was that hydrolysis is the rate limiting step. Hydrolysis rate constant is decreased with increasing the complexity of the dye structure. Support materials with high electron transfer capacity increased the biofilm activity, therefore, increased the hydrolysis rate constant. Acetate concentration, used as an external carbon source, improved the dye removal efficiency. However, acetate to dye ratio did not have a direct relation to dye removal efficiency. Higher hydraulic retention time (HRT) increased the contact time between dye molecules and biofilm and enhanced the dye removal efficiency, too. However, it is essential to impose the right balance between HRT and external carbon sources to make the process feasible.
The emergence of environmental contaminants (ECs) either from natural or anthropogenic sources is considered a critical threat to the various components of the ecosystems. Therefore eco-friendly, innovative, and practical approaches for the remediation of ECs are needed toward sustainable environmental pollution management. Among the innovative techniques, nanomaterials are robust and contemporary research tools to combat the ECs in various ecological components. However, the preparation of desired nanoparticles (NPs) through physical and chemical means is discouraged because of the requirement of high energy inputs and adverse impacts on the environment and associated biota. Thus a keen interest of the scientific community has been growing toward sustainable production of NPs using innovative microbial techniques and their practical application. Among the huge diversity in fungi, some genera are considered as potential candidates for NPs synthesis because of their higher capabilities of bioaccumulation and secretion of large amounts of proteins and other biomolecules. These mycosynthesized NPs have exhibited excellent performances to adsorb or decontaminate various emerging ECs such as hazardous chemical dyes and heavy metals. Mycosynthesized NPs can appreciably degrade the toxicity associated with heavy metals (approximately 90%) and dyes and have shown high promise for remediation of ECs. This review updates knowledge and research progress concerning the synthesis of NPs using fungal species and discusses the future application of mycosynthesized NPs in remediation of ECs as nano-based green remediation.
Bangladesh has a huge potential for utilizing renewable energy with the availability of sources for solar, wind, hydro, and biogas. This paper provides a comprehensive analysis of the potential for renewable energy sources and predicts optimal sites for renewable plant implementation in Bangladesh. A country-wise mapping approach is followed by validation of prediction using Multi-Criteria Decision Analysis (MCDA) known as Analytical Hierarchy Process (AHP) which will aid in the planning and execution of Bangladesh’s upcoming expansion of renewable farms and will also be a useful tool for policymakers. Moreover, an economic analysis for 50 MW solar and wind power plant has been presented to estimate the Levelized Cost of Electricity (LCoE) of the system and society. This work predicts the enormous potential for the expansion of renewable energy by assessing the appropriate future sites, economic viability, and cost estimation from Bangladesh’s perspective.
Nitrite is one of the most widely used curing ingredients in meat industries. Nitrites have numerous useful applications in cured meats and a vital component in giving cured meats their unique characteristics, such as their pink color and savory flavor. Nitrites are used to suppress the oxidation of lipid and protein in meat products and to limit the growth of pathogenic microorganisms such as Clostridium botulinum. Synthetic nitrite is frequently utilized for curing due to its low expenses and easier applications to meat. However, it is linked to the production of nitrosamines, which has raised several health concerns among consumers regarding its usage in meat products. Consumer desire for healthier meat products prepared with natural nitrite sources has increased due to a rising awareness regarding the application of synthetic nitrites. However, it is important to understand the various activities of nitrite in meat curing for developing novel substitutes of nitrites. This review emphasizes on the effects of nitrite usage in meat and highlights the role of nitrite in the production of carcinogenic nitrosamines as well as possible nitrite substitutes from natural resources explored also.
Cancer is exerting an immense strain on the population and health systems all over the world. Green tea because of its higher simple catechin content (up to 30% on dry weight basis) is greatly popular as an anti-cancer agent which is found to reduce the risks of cancer as well as a range of other diseases. In addition, several in vitro and in vivo studies have shown that green tea possesses copious health benefits like anti-diabetic, anti-obese, anti-inflammatory, neuro-protective, cardio-protective, etc. This review highlights the anti-carcinogenic effects of green tea catechins integrating the recent information to gain a clear concept. Special emphasis was given to the effectiveness of green tea polyphenols (GTP) in the prevention of cancer. Overall, green tea has been found to be effective to reduce the risks of breast cancer, ovarian cancer, liver cancer, colorectal cancer, skin cancer, prostate cancer, oral cancer, etc. However, sufficient information was not found to support that green tea consumption reduces the risk of lung cancer, esophageal cancer, or stomach cancer. The exciting data integrated into this article will increase interest in future researchers to garner more fruitful information on the relevant topics.
Floods are a frequent natural calamity in Bangladesh, where many areas get affected almost every year. An indicator-based vulnerability assessment can help efficiently manage the disaster. Therefore, this study intends to assess the community vulnerability in the Jamuna floodplain, one of the most flood-affected areas, using an indexing method. The index involves many indicators of flood exposure, sensitivity, and adaptive capacity along with their weights, determined based on an extensive literature review. A pretested questionnaire was employed to collect primary data from the study area through 400 household-level interviews. Using multistage sampling techniques, five upazilas from Jamalpur district, i.e., Dewanganj, Islampur, Madarganj, Melandaha, and Sharishabari, were purposefully chosen based on past flood damage reports. The percentage values were derived using SPSS for every variable from the field-level data. The variable vulnerability index (VVI) was computed by dividing the indicator’s weight by its percentage value. Then, exposure, sensitivity, and adaptive capacity indices were calculated using the VVI values. Finally, the composite vulnerability index (CVI) of the five Upazilas has been computed using an established and recognized index formula. The CVI scores for Dewanganj, Islampur, Madarganj, Melandaha, and Sharishabari are 0.86, 0.84, 0.71, 0.70, and 0.65, respectively, which suggest a high overall vulnerability. The scores of the exposure and adaptive capacity indices reveal that Dewanganj and Islampur Upazilas have higher vulnerability than the other three upazilas, especially due to poor socioeconomic conditions, low adaptive capacity, and high exposure. This study recommends some infrastructural development, such as sustainable flood-resistant dams, as the study sites are in a flood-prone zone. Houses should be built using flood-resistant materials like bricks and concrete, which are more resilient than mud. Improvements in education and multiple income sources will help the affected people increase their coping capacity.
Objectives: To investigate burnout among Bangladeshi nurses and the factors that influence it, particularly the association of workplace bullying (WPB) and workplace violence (WPV) with burnout. Methods: This cross-sectional study collected data from 1,264 Bangladeshi nurses. Mixed-effects Poisson regression models were fitted to find the adjusted association between WPB, WPV, and burnout. Results: Burnout was found to be prevalent in 54.19% of 1,264 nurses. 61.79% of nurses reported that they had been bullied, and 16.3% of nurses reported experience of “intermediate and high” levels of workplace violence in the previous year. Nurses who were exposed to “high risk bullying” (RR = 2.29, CI: 1.53–3.41) and “targeted bullying” (RR = 4.86, CI: 3.32–7.11) had a higher risk of burnout than those who were not. Similarly, WPV exposed groups at “intermediate and high” levels had a higher risk of burnout (RR = 3.65, CI: 2.40–5.56) than WPV non-exposed groups. Conclusion: Nurses’ burnout could be decreased if issues like violence and bullying were addressed in the workplace. Hospital administrators, policymakers, and the government must all promote and implement an acceptable working environment.
This study examines the effect of ICT progress on economic growth by constructing an ICT diffusion index. Along with ICT, this study further investigates the role of financial development and the combined impact of ICT and financial development on growth in 10 Asian developing economies covering the period 2001–2017. To analyze the panel data, this study employed the ARDL model and estimated the Pooled Mean Group estimator. The estimated results reveal a significant positive long-run relationship between financial expansion and economic progress. While ICT hurts economic growth on its own, it has a significant positive impact when combined with financial development. The robustness of the results has been verified by Fully-Modified OLS (FMOLS) and Dynamic OLS (DOLS) estimations. To promote enduring economic growth in Asian developing countries, the paper recommends ensuring inclusive financial development combined with modern ICT.
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3,158 members
Mohammad Abul Hasnat
  • Department of Chemistry
Mizanur Rahman
  • Department of Forestry and Environmental Science
Animesh Sarkar
  • Department of Food Engineering and Tea Technology
Mohammad Jakir Hosen
  • Department of Genetic Engineering and Biotechnology
Shakhinur Islam Mondal
  • Department of Genetic Engineering and Biotechnology
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Shahjalal University of Science and Technology, 3114, Sylhet, Sylhet, Bangladesh
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Farid Uddin Ahmed
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