Global Research Society Publisher

GRS Journal of Multidisciplinary Research and Studies

All Issues

1. Assessment of Horticultural Crop Sweet Potato for Ethanol production
16

Mst. Nilufa Yesmin*, Md. Abul...
Scien Institute of Environmental Science (IES), University of Rajshahi, Rajshahi-6205
1-13
https://doi.org/10.5281/zenodo.15568594

Bangladesh is both an agricultural and energy deficient country. Sweet potatoes (Ipomoea batatus L.) are easy to grow and have a lot of starch, so they can be used to make fuel ethanol. This study looks at how to get the best amount of ethanol from sweet potatoes grown in Bangladesh. First, 100 grams of boiled sweet potato were mixed with 300 mL of clean water and then made germ-free. Two enzymes, 1750 units of α-amylase and 2000 units of glucoamylase, worked best to break down the starch. Then, 200 mL of yeast (Saccharomyces cerevisiae CCD) with a cell count of 1x10⁵ cells/mL was added to reach a total of 500 mL for fermentation. The results concluded that the optimized parameters are incubation time 6 days, pH 6.0, temperature 35◦C, sugar concentration 20 % (w/v) and inoculum concentration 10% v/v. Supplementation of external nitrogen sources (only sweet potato, urea, (NH4)H2PO4, only peptone and all nutrients) on ethanol production were also investigated. Many things affect how much ethanol is made. The final amount, 116.33 mL per liter with 35% purity, depends on getting the best conditions during the process.

2. Enhancing Physics Students’ Critical Thinking Skills Using Problem-Bas...
4

Alfons Jhon L. Cabrezos*, Deni...
Science Education Department, College of Education, Central Mindanao University, Philippines
14-20
https://doi.org/10.5281/zenodo.15572308

This study investigated the impact of Problem-Based Learning via Vlogs (PBL-Vlogs) on the critical thinking skills of Grade 10 Physics students at Don Carlos National High School. A quasi-experimental design was employed to assess whether students exposed to PBL-Vlogs would demonstrate significantly greater improvements in critical thinking than those taught using traditional methods. Sixty-eight students were randomly assigned to either an experimental group (PBL-Vlogs) or a control group (non-PBL-Vlogs). Both groups completed a validated pre-test and post-test assessing critical thinking across four domains: interpretation, analysis, evaluation, and inference. In the pre-test, descriptive statistics revealed that both groups began with low-level critical thinking skills. Following the intervention, the PBL-Vlog group shifted to a moderate level, while the control group remained in the low category. An Analysis of Covariance (ANCOVA), controlling for pre-test scores, was conducted to determine the significance of differences in post-test performance. The results indicated a statistically significant improvement in students' critical thinking skills in the PBL-Vlog group (F = 15.594, p < 0.001), with a partial eta squared of 0.193, representing a moderate effect size. The findings support the conclusion that integrating multimedia content in a problem-based framework substantially enhances students' critical thinking abilities in Physics. PBL-Vlogs provided an effective instructional strategy for fostering engagement and developing higher-order thinking skills, as evidenced by the quantitative improvements in student outcomes

3. The Role of AI in Recruitment: A Systematic Literature Review
5

*Priyabrata Swain, Aradhna Mal...
Indian Institute of Technology, Kharagpur, West Bengal, India
21-30
https://doi.org/10.5281/zenodo.15572327

This systematic literature review (SLR) examines the role of artificial intelligence (AI) in recruitment techniques. AI technologies are being swiftly integrated into recruiting processes, enhancing and streamlining various stages from applicant sourcing to selection. The study aims to provide an overview of current research trends, challenges, and future directions in this topic. A comprehensive literature search utilising PRISMA principles on the Web of Science database yields 43 selected research papers from the past 15 years. The findings indicate that artificial intelligence has fundamentally transformed hiring processes by offering benefits such as reduced bias, enhanced cost-effectiveness, improved candidate experience, and increased efficiency. However, issues pertaining to data privacy, algorithmic bias, and human-AI interaction remain unresolved. Future research should focus on addressing these concerns and examining the ethical implications of artificial intelligence in recruitment.

4. Heavy metal contamination in water and its impact on environment
24

Mahfuza Khanom Sheema, *Mst. N...
Udayan College of Bioscience & Technology, Rajshahi
31-35
https://doi.org/10.5281/zenodo.15602309

A study was to conduct with an aim to investigate the contamination of water by heavy metal in the vicinity of rapidly growing urbanied and industrialied area around Iswardi in Bangladesh. Rapid and poorly planned urban growth, along with industrial expansion and insufficient waste management systems, significantly impact the physical environment and lead to increased accumulation of municipal waste. In developing countries like Bangladesh, one of the most critical challenges of urbanization is the effective management of solid, liquid, and hazardous waste. Many cities lack adequate regulations and proper facilities for disposing of dangerous waste, which can include toxic or even radioactive materials. Levels of heavy metals have been assessed against the drinking water standards established by the EU (1998) and WHO (1993, 2004). The levels of arsenic (<0.01 mg/l) and cadmium (<0.03 mg/l) in the water samples that were analyzed were found to be below the risk thresholds. The findings indicate that the mean concentrations of Pb (0.05±0.01 mg/l) and Cr (0.2±0.1 mg/l) in drinking water have increased. These levels are higher than the drinking water limits set by the WHO (2004, 1993) and the EU (1998) for Pb (0.01 mg/l) and Cr (0.05 mg/l), respectively, and may provide a modest health risk to humans. Certain heavy metals are classified as xenobiotics because they serve no beneficial purpose in biological systems and can be harmful even at very low concentrations. Toxic metals such as cadmium, beryllium, chromium, lead, and arsenic fall into this category. Elevated concentrations of these metal ions are extremely hazardous to both humans and animals, as well as to plants. Their ability to dissolve in water makes them a significant environmental concern

5. The Influence of Online Promotion, Service Quality, and Product Strate...
4

Okvan Resdianto Rustam*, Usep...
Universitas Negeri Jakarta
31-50
https://doi.org/10.5281/zenodo.15628251

The rapid development of the wedding industry, coupled with shifting consumer preferences post-pandemic, has transformed how Wedding Organizers market their services. This study aims to analyze the influence of online promotion, service quality, and product strategy on purchasing intention, with Word of Mouth (WOM) as a mediating variable. The research focuses on Wedding Organizer users in Jabodetabek, particularly individuals aged 25-40 who have utilized these services within the past 1-2 years. Using a purposive sampling method, 200 respondents were selected to provide insights into their experiences and preferences. Data were collected through structured questionnaires and analyzed using statistical methods to evaluate direct and indirect effects among the variables. The findings reveal that online promotion, service quality, and product strategy significantly influence purchasing intention. Furthermore, WOM mediates this relationship, emphasizing its critical role in enhancing consumer trust and decision-making. The study underscores the importance of leveraging digital marketing, delivering high-quality services, and innovating product offerings to attract and retain customers in a competitive market. This research provides valuable insights for Wedding Organizers to develop effective strategies tailored to evolving consumer behaviors, ensuring sustainable growth in the post-pandemic era.

6. From Ancient Wisdom to Modern Learning: Reviving Indian Knowledge Syst...
2

Vaishali *, Dr. Niradhar Dey
Ph.D. Research Scholar in Education, School of Education, IGNOU, New Delhi
51-55
https://doi.org/10.5281/zenodo.15667973

The Indian Knowledge System refers to the Indian body of knowledge passed through generations in India. The Indian Knowledge System integrates reasoning and wisdom in a holistic framework, balancing life’s spiritual, intellectual, moral, and physical aspects. The legacy of the Indian Knowledge System is a commitment to progress; therefore, reviving the Indian Knowledge System in the modern era is very important. This can be done by clubbing ancient learning with modern technology i.e., SWAYAM (a MOOC), where courses on the Indian Knowledge System can be developed for the holistic development of the students. Therefore, this paper is an attempt to get an overview of the Indian Knowledge System and SWAYAM, how the courses can be created on SWAYAM, the importance of creating these courses in reviving the Indian Knowledge System, and the challenges faced in the creation of MOOCs through SWAYAM. The findings revealed that enriching educational experiences have the potential to bridge the gap between ancient wisdom and contemporary context. Through clear learning outcomes, structure, engaging pedagogy, interactive projects, assessment, and certification through SWAYAM, the Indian Knowledge system can reach the learners. Disseminating the ancient practices, sciences, philosophies, etc. to the learners will add to the body of their knowledge. Learning through SWAYAM will preserve ancient knowledge, promote interdisciplinary learning, and bridge the gap between traditional and modern knowledge that will depend on overcoming challenges related to teacher training support, curriculum integration, and cultural sensitivity. With the continued focus on overcoming these challenges, the revival of the Indian Knowledge System has profound implications; cultural preservation, economic development, and recognition of the Indian system fostering holistic and sustainable approaches to learning.

7. The Link Between Agricultural Pesticide Use and Rising Cancer Cases in...
8

Josphert N. Kimatu*, Laura N....
South Eastern Kenya University, School of Sciences and Computing, Department of Life Sciences, P.O. Box 170-90200, Kitui, Kenya.
56-62
https://doi.org/10.5281/zenodo.15720492

There is an alarming increase of cancer cases alongside an increased pesticide use in agriculture in Kenya. This has raised concerns about possible links between pesticide exposure and cancer incidences. This study investigated the potential associations between pesticide usage and cancer cases, focusing on key chemicals, exposure pathways, and at-risk populations. The study analyzed data from Kenyan surveys on pesticide usage, environmental contamination, food residues, and human biomonitoring alongside international and local epidemiological studies. Statistical analyses including correlation and chi-square tests explored the relationships between pesticide usage and cancer incidence. The results found that between 2015 and 2018, pesticide imports more than doubled, with over 75% comprising highly hazardous pesticides (HHPs). Residues were found in 46% of food samples tested, with 11% exceeding EU limits. Biomonitoring analysis found pesticide metabolites amongst farmers and their families. Higher cancer rates, particularly non-Hodgkin lymphoma and breast cancer, were observed in regions with intensive pesticide use (e.g., glyphosate and DDT showed a correlation of r = 0.75, p < 0.028). Phthalates, known endocrine disruptors, were inversely related to molluscicide use (r = -0.40, p < 0.002), suggesting spatial variation in pesticide types. The findings support a possible link between pesticide exposure and Kenya’s cancer trends, aligned with known mechanisms such as DNA damage and hormonal disruption. The study found that weak regulation, continued use of banned substances, and limited farmer awareness exacerbate risks. We recommend phasing out HHPs, promoting biopesticides, enhancing residue monitoring, and increasing public awareness to mitigate health impacts while supporting sustainable agriculture.

8. The Involvement of Gods & Goddesses Politics in the love of Troilus &...
14

Mainul Islam*
Assistant Professor, Department of English, Dhaka International University
63-69
https://doi.org/10.5281/zenodo.15760944

This paper inspects the elusive divine involvement of politics in Geoffrey Chaucer’s Troilus and Criseyde, focussing on how the gods and goddesses vigorously trace the destiny of the insignificant lovers. Different from reflexive fantabulous and fabulous mythological records, goddesses such as Venus and Fortune exercise an enormous influence over human-emotion and decision-making, moulding hesitation on the independence of individual determination. By investigating supernatural manipulation and its emotional and political ramifications, the research investigates how Chaucer analyses the role of higher super-powers in shaping human and societal fates. Venus, representing the inconsistency and instability of love passion, and Fortune, demonstrating the unpredictable nature of earthly events, contribute to a tale formed by divine randomness and emotional softness. The consequent tension between predestination and free-will emphasizes Chaucer’s complex realization of love, fate, human and supernatural agency. Eventually, the poem propositions a clear deliberation on the boundaries of human control in a cosmos governed by heavenly impulse, revealing the comprehensive socio-political and supernatural consequences of such religious conceptions.





Submit Manuscript