Traektoria Nauki
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Biodegradation Potentials of Fungi Isolated from Hydrocarbon-Polluted Soil of Umungede, Owaza in Ukwa West Local Government, Abia State, Nigeria
Full text linkPetroleum hydrocarbon contamination from the oil and gas industry's operations, including oil spills, tank leaks, lubrication, petroleum extraction, transportation, and services, is one of the major environmental issues affecting the world today. The bioremediation and degradation of hydrocarbon pollutants from the environment have been accomplished using various methods, including mechanical and chemical procedures; however, some of these processes are typically costly and may have negative environmental impacts. This research is designed to isolate, characterise, identify and determine the ability of fungi to degrade hydrocarbons present in crude oil while quantifying their degree of effectiveness. The Soil sample used in this research was aseptically collected from Umungede, Igiriukwu, in Owaza village of Ukwa West LGA, Abia State, and sent to the research laboratory. Growth and degradation studies were conducted over a time course using standard methods, including the gravimetric method of estimation and gas chromatography-mass spectrometry (GC-MS) analysis. The biodegradation studies were conducted over a 15-day period, and the initial and final total petroleum hydrocarbon concentrations in the various setups, which contained the isolated fungi, crude oil, and growth media, were calculated. The results of the screening revealed that the yeast Pichia kudriavzevii/Issatchenkia orientalis, more commonly known as Candida krusei, had the highest percentage of degradability potential, at 98.23%. The Aspergillus niger closely followed these strains, XM_MG659649.1, MW_186673.1, and MT_729936.1, which also showed a very high degradation potential of 96.56%, 91.66%, and 94.26%, respectively. Aspergillus terreus also demonstrated a good degradation ability, but it was the least effective among the organisms studied in this research setup. Based on this study, it can be summarised that fungi are highly effective and efficient at removing hydrocarbon pollutants from sediments, oil, and water. However, since the potential of fungus has not yet been fully realised, further research is advised, particularly in the contemporary proteomic and genomic era
Authority of Remote Online Notary in Making Notarial Deeds: Comparative Study of the United States Federal Law and the States of Texas and Indonesia
Full text linkThis study aims to analyse the authority of remote online notaries in creating notarial deeds and assess the validity of remote online notary deeds in the United States of America, specifically in the States of Texas and Indonesia. The type of research used is normative legal research. The study's results reveal similarities and differences between the authority of a remote online notary in the United States, as outlined in Article 5.1 of the Model Electronic Notarization Act of 2017. The Texas Government Code, Section 406.016, regulates the authority of a remote online notary in the State of Texas. In contrast, Article 15 of Law No. 2 of 2014, which amends Law No. 30 of 2004 concerning the Notary's Position, governs the authority of a notary in Indonesia. However, Indonesian law currently lacks regulations on the authority of a remote notary. In the United States, Section 1625 of the Securing and Enabling Commerce Using Remote and Electronic Notarization Act of 2021 establishes the validity and legal effect of remote online notarised deeds and recognises their legal authority. The legal consequences of a remote notarial deed made by a remote notary are valid. The validity of a remote notarial deed (remote online act) in the State of Texas is regulated in Government Code Chapter 406, Subchapter C, online notary. Notaries who make remote notarial deeds have received permission from the Texas Secretary of State. Meanwhile, in Indonesia, there are no regulations governing the validity of remote notarial deeds
Assessing the Impact of Lean Six Sigma Management on Organisational Productivity
Full text linkWe conducted a comprehensive study to investigate the impact of Lean Six Sigma (LSS) management practices on organisational productivity across various industries. We employed a quantitative research approach, using structured questionnaires, to survey 44 professionals from diverse sectors, including manufacturing, IT/technology, healthcare, engineering, and finance. The survey assessed their perceptions of LSS implementation outcomes over a seven-day data collection period from June 6 to 13, 2025. Our results demonstrate that LSS significantly enhances organisational performance, with 88.7% of participants agreeing that LSS reduces organisational waste, 86.3% acknowledging its role in improving customer satisfaction, 81.8% recognising its contribution to organisational culture change, and 77.3% confirming its effectiveness in achieving competitive advantage. We also identified critical success factors, with Leadership and Facilitation rated as most essential (61.4%), followed by Process Improvement (59.1%) and Data Analytics (56.8%), while the primary implementation challenge was sustaining improvements over time (61.4% agreement). The study concludes that LSS provides substantial empirical evidence for enhancing organisational productivity through comprehensive waste reduction, improved customer satisfaction, cultural transformation, and strategic positioning across multiple industry sectors, emphasising the critical importance of leadership commitment, analytical capabilities, and sustained organisational support for successful implementation.
Individualised Education and Artificial Intelligence: Artificial Intelligence (AI)'s Potential to Study Personal Learning Patterns to Adapt Educational Participation
Full text linkTechnology has revolutionised education worldwide, profoundly affecting both learners and educators. Educators have shifted from stereotypical education administration to an individualised learning system that gives learners' preferences and uniqueness the required attention. The researchers conducted this study to investigate the potential of artificial intelligence in enhancing personalised learning. The researchers incorporated constructivist and self-regulating theories to substantiate the significance of the topic. An integrative literature review was conducted to achieve the study's objective and to present a framework that can guide stakeholders in implementing artificial intelligence to advance personalised education. The review revealed that artificial intelligence can facilitate improved engagement, adaptive learning, individualised predictive intervention and support, and inclusivity. The study also found that data privacy, decline in mental brilliance, and lack of AI-driven platforms are all challenges faced in the implementation and use of artificial intelligence in the education sector
The Influence of Social Media on Workforce Upskilling: A Critical Analysis of Learning, Networking, and Career Advancement Opportunities
Full text linkThe research investigates how social media networks affect the development of workforce training, including professional contacts, digital education, and career enhancement. A quantitative research design uses secondary data, which was analysed using SPSS, to study the factors affecting the development of professional social media engagement. The research begins by outlining its background information and specific goals, and explains why this analysis is important. This research explores the skill-building practices and career mentoring services available through LinkedIn, Twitter, and YouTube platforms. Chapter 2 examines previous research on the effect of social media on workforce upskilling, employing Social Cognitive Career Theory (SCCT) as the theoretical base. The research methodology section of Chapter Three describes how the author designed their study, together with their data collection procedures and analysis approaches, especially when utilising secondary data through SPSS statistical software. The fourth chapter presents data analysis findings using Pearson correlation analysis and multiple regressions, identifying key relationships between social media and workforce upskilling. The research concludes by evaluating the results, which explain how social media can build career opportunities while examining the challenges that candidates may face
The Visual Catalyst: Integrating Graphic Design, Innovation and Circu-lar Economy Principles for Sustainable Production
Full text linkOur research addresses a critical blind spot in the circular economy (CE) transition: the gap between technical potential and public adoption. While the focus has been on technological innovation, we demonstrate that graphic design is the essential catalyst for making circular systems functional and desirable, given the need for effective communication and cultural adoption. This study positions graphic design not as a superficial layer but as a strategic catalyst for enabling circular systems by translating complex principles into tangible user experiences. Through a qualitative study involving nine graphic designers in Nigeria, this research identified key barriers, including a significant value-action gap, client hesitation, and a deficit of resources and knowledge that hinder the integration of CE practices. Despite these challenges, designers demonstrated a strong willingness to engage in training and adopt circular principles. In response to these findings, this paper introduces the Graphic Design–Innovation–Circularity (GIC) Model, a novel conceptual framework that illustrates the synergistic relationship between visual communication, design-driven innovation, and CE principles to foster sustainable production. The authors provide an actionable guide for designers, educators, and policymakers and argue that we cannot fully realise a circular economy unless design leverages its power to shape behaviour, build trust, and make sustainability visible and desirable
Biotechnological Approaches to Reversing Antibiotic-Induced Dysbiosis: Biochemical Pathways to Restored Microbiota Health
Full text linkAntibiotic-induced dysbiosis disrupts the gut microbiota's biochemical symphony, impairing metabolic, immune, and signalling functions essential for health. This multidisciplinary review consolidates molecular, biochemical, and translational insights into biotechnological strategies for microbiota restoration. Topics include engineered probiotics, synthetic microbial consortia, phage-based therapeutics, and metabolic reconstruction of short-chain fatty acid and bile acid pathways. Computational modelling and multi-omics integration are examined as tools for pathway prediction and ecological resilience testing. Clinical and ethical perspectives highlight ongoing trials, biosafety frameworks, and equitable access in low-resource settings. Synthesising findings from systems biology and clinical translation, the review concludes that the next frontier of microbiome therapeutics lies in rationally engineered metabolic restoration—a convergence of biotechnology, computation, and ethics aimed at transforming post-antibiotic medicine into a programmable, functionally resilient ecosystem
Evaluation of the Toxic And Synergetic Effects of Decoction Of Citrus Aurantifolia and Carica Papaya on Mice Infected with Plasmodium Berghei
Full text linkIn endemic regions such as Nigeria, malaria persists as a significant public health issue. Researchers may enhance malaria treatment by using natural remedies and synergistic botanical extracts. This study explored synergistic and toxic effects of Carica papaya and Citrus aurantifolia decoction in mice infected with Plasmodium berghei. Researchers used the Rane's test to evaluate the decoction's efficacy against P. berghei in mice: 40 mice inoculated with P. berghei were randomly grouped into five different groups (A – E); following infection with the protozoan, mice in groups B – E were treated with 0.2 ml decoctions of C. papaya, C. aurantifolia, C. papaya + C. aurantifolia + Artemether, or C. papaya + C. aurantifolia, respectively.Researchers estimated the level of parasitised red cells using a microscope (Giemsa stain, thin smear), determined the packed cell volume with the microhematocrit method, and examined the stained liver sections. The findings showed that all treatment groups significantly reduced parasitemia, and mice given C. papaya alone achieved the most significant suppression. Nevertheless, the treatment produced no noticeable change in haematological indices. Histopathological examination revealed the hepatoprotective effects of the single treatment with C. papaya decoction. From the findings of this study, a single treatment with C. papaya decoction demonstrated significant anti-plasmodial effects against P. berghei-induced parasitemia and liver damage compared with the combination of decoctions
The Clinical Anatomy of Cricothyroid Membrane, Its Relevance To Emergency Subglottic Procedures
Full text linkPrecise anatomical knowledge is essential for successful emergency cricothyrotomy. However, most protocols assume that anatomical data from Western populations are universal. To address this, our study measured cricothyroid membrane dimensions in Nigerian adults and compared them with international standards. We analysed 148 cadaveric specimens (89 males, 59 females, aged 22–76) from three central Nigerian university anatomy departments between January 2023 and June 2024. Using digital callipers, vertical height, transverse width, and membrane thickness were measured at standardised locations. The researchers analysed the data using multiple linear regression in R 4.3.1, with demographic predictors. Compared to international standards, Nigerian specimens had lower vertical height (8.7±1.4 mm vs 9.8±1.2 mm; Cohen's d = −0.83, 95% CI: −1.00 to −0.66, p < 0.001), representing an 11.2% reduction. Membrane thickness was higher (4.3±0.8mm vs 2.8±0.6mm; Cohen's d = 2.09, 95% CI: 1.86–2.32, p<0.001), a 46.4% increase. Males had greater vertical height than females (9.2 mm vs 7.8 mm, p < 0.001). Ethnic differences were also observed, with Igbo specimens differing most from international norms. These significant morphometric differences indicate that Nigeria needs emergency airway protocols tailored to its population
Вплив цифрових інновацій на ставлення майбутніх учителів математики до варіаційного числення
Full text linkThe paper considers digital innovations that are useful to introduce when studying calculus of variations: visualisation software (general and mathematical), open educational resources, artificial intelligence, and learning management systems. Among the visualisation software tools, MindMeister, Genially, GeoGebra, and MATLAB are considered, and examples of their use for creating mind maps and interactive posters, constructing graphs of extrema, and solving problems of variational calculus are given. The significance, forms, methods, and possibilities of using these tools in the study of calculus of variations are clarified. The possibilities of open educational resources (online courses and video lectures) and artificial intelligence (Gemini) in individualising learning, familiarising students with foreign experiences in teaching calculus of variations, and utilising digital educational resources are presented. It is advisable to use the Google Classroom platform to organise distance learning and ensure equal access to digital educational resources for all participants in the educational process. A survey of students before and after the systematic application of digital innovations showed a statistically significant positive trend in attitudes towards the study of calculus of variations (according to Wilcoxon's criterion). The results confirm the feasibility and expediency of introducing digital innovations comprehensively into the professional training process of future mathematics teachers.У роботі розглянуто цифрові інновації, які доцільно запроваджувати під час вивчення варіаційного числення: програмні засоби візуалізації (загального й математичного призначення), відкриті освітні ресурси, штучний інтелект, системи управління навчанням. Серед програмних засобів візуалізації розглянуто MindMeister, Genially, GeoGebra, MATLAB, наведено приклади їхнього застосування для створення інтелект-карт й інтерактивних плакатів, побудови графіків екстремалей, розв’язування задач варіаційного числення. Для цих засобів з’ясовано їхнє значення, форми, методи й можливості застосування під час вивчення варіаційного числення. Наведено можливості відкритих освітніх ресурсів (онлайн-курсів та відеолекцій) і штучного інтелекту (Gemini) в індивідуалізації навчання, ознайомленні здобувачів освіти з зарубіжним досвідом навчання варіаційного числення й застосуванням цифрових освітніх ресурсів. Показано, що для організації дистанційного навчання та забезпечення для всіх учасників освітнього процесу рівного доступу до цифрових освітніх ресурсів доцільно використати платформу Google Classroom. Проведене анкетування студентів до та після систематичного застосування цифрових інновацій показало статистично значущу позитивну динаміку у ставленні до вивчення варіаційного числення (за критерієм Вілкоксона). Результати підтверджують можливість і доцільність комплексного впровадження цифрових інновацій у процес професійної підготовки майбутніх учителів математики