Laboratory Investigation on Permeability Change and Economic Analysis Using Some Selected Nanoparticles for Enhanced Oil Recovery

/in /by

Enhanced oil recovery using nanoparticles is an emerging technique that can potentially alter permeability and wettability of porous media for improved oil mobilization. This study experimentally investigates the permeability alteration caused by three commonly used nanoparticle types – copper (ii) oxide, zinc oxide and silicon oxide. Core flooding experiments were conducted on reservoir rock samples before and after treatment with nanoparticle dispersions. Results show decrease in permeability by 35% for copper (ii) oxide, 30% for zinc oxide and 10% silicon oxide respectively. Pore-scale analysis indicates that permeability change occurs through mechanisms like pore throat blocking/wettability alteration. Nanoparticle concentration is also found to influence the permeability variation, with optimal dosage. Among the systems tested, Silicon oxide is the most effective formulation for enhancing oil recovery applications based on its ability to recover oil with minimal alteration to formation permeability. From the result, Silicon oxide had a cumulative recovery of 17ml, 18.0ml and 18.5ml thereby generating a percentage recovery of 73.91%, 78.26% and 80.43%  while Zinc oxide had a cumulative recovery of 15.5ml, 18.0ml and 16.5ml thereby generating a percentage recovery of 77.50%, 78.26% and 71.74ml%, lastly Copper (ii) oxide had a cumulative recovery of 16.5ml, 17.0 and 16.0 generating a percentage recovery of 75%, 73.91% and 72.72% respectively with a concentration of 0.1%, 0.3%, and 0.5%. This study demonstrates the potential of Silicon oxide nanoparticles for enhanced oil recovery through permeability manipulation in porous media, however, the economic analysis shows that it’s quite expensive due to its cost of production and won’t be ideal for use. Hence Zinc oxide which also has a high volume of oil recovery, and less production cost can be used.

The Effect of Project-Based Learning Models and Learning Styles on Creative Thinking Skills of Students

/in /by

The purposes of this study are: (1) to examine the effect of the Project-Based Learning model on the creative thinking skills of students, (2) to examine the effect of Learning Styles on the creative thinking skills of students, (3) to examine the effect of the interaction between Project-Based Learning and Learning Styles on creative thinking skills of students. The research design is quasi-experimental research. The subjects of this study are 22 students majoring in Mathematics Education at Wisnuwardhana University, and the instruments used are questionnaires and tests. The analysis technique used is two-way ANOVA (Analysis of Variance). The results of the study showed that there is an effect of the PjBL learning model on students’ creative thinking skills because the calculated F value is 5.976 with a probability value or significance of 0.04 < 0.05. The hypothesis test results for the Learning Styles factor obtained a calculated F value of 34.012 with a probability value or significance of 0.03 < 0.05. This means that there is a significant difference in creative thinking skills among students with Visual, Auditory, and Kinesthetic learning styles. Additionally, there is an influence of the interaction between the Learning Model and Learning Styles on creative thinking skills because the calculated F value is 7.760 with a probability value or significance of 0.04 < 0.05.

 

Bioremediation of Saline Soils with the Consortium of Halophilic Bacteria

/in /by

88 strains of bacteria were isolated and purified from the naturally saline soils of Kumisi, Sagarejo and Alazani valley (Eastern Georgia). Based on the initial identification all strains belong to the genus Bacillus. Two strains – Bacillus spp. 8(3)1) and Bacillus spp. 7(5)4, resistant to chloride, sulfate and mixed (chloride-sulfate) salinity, as well as possessing high cellulase and amylase activities were selected as a result of successive screenings among the isolated bacteria. After the antagonism between potential members of the consortium has been excluded, the consortium of halophilic bacteria was created. Compost was made and applied to moderately saline soils using the halophilic consortium. The bioremediation of saline soils of Alazani was especially successful: the halophilic consortium has reduced the salt content in the soil by 41% during the 21 days of composting.

Machine Learning as Managerial Tool: A Case Study in ADNOC

/in /by

In the current business environment, managers are facing challenges in managing different kinds of people. They find it difficult to track, evaluate, and manage employees in a fast-paced work setting. Machine learning is an emerging concept that deals with unsupervised and supervised learning of a machine to provide a usable system. In this matter, this paper aims to investigate how companies can leverage the use of machine learning in people management and in improving the performance, productivity, and motivation of employees and managers. Thus, the research used both qualitative and quantitative research approaches to examine the impact of machine learning in an organizational setting.

A Review on the Benefits of Continuous Threat Exposure Management in the Banking Industry

/in /by

The digital infrastructure of any organization, especially in the banking and financial services sector, is a critical component that underpins its operations. Managing the security of this digital landscape is a formidable challenge, given the ever-evolving threat landscape and the myriad entry points that cyber adversaries can exploit. Continuous threat exposure management offers a proactive approach to identifying, assessing, and managing security threats and vulnerabilities within an organization’s IT infrastructure. This review aims to analyze the various benefits associated with continuous threat exposure management, such as proactive risk identification, threat prioritization, and risk resilience strategies. By examining these key areas, this review provides valuable insights into the importance of effectively managing and mitigating threats for the long-term stability and security of financial institutions.

Sociocultural Perspectives on Badjao Life Captured from the Lived Experiences of Badjao Teens in Surigao City: A Phenomenology

/in /by

This Husserlian phenomenological study explored the sociocultural perspectives on Badjao life of teens in Surigao City. Employing Van Kaam’s phenomenology modified by Moustakas (1994), six key informants from the Badjao community (aged 15 to 19) in Canlanipa, Surigao City, were interviewed on their sociocultural experiences, yielding nine themes. Purposive sampling identified informants. Applying Van Kaam’s modified by Moustakas for data analysis revealed significant findings: Cultural Transition and Urban Challenges, Social Stereotypes and Bullying, Judgement and Discrimination, Language and Communication Challenges, Community and Social Exclusion, Government Support for Education and Community, Community Resilience and Support, Badjao Community Dynamics, and Traditional Cultural Practices. The Badjao community’s resilience relies on governmental support, education, and navigating cultural transitions. Facing discrimination and economic disparities, they strengthen social bonds, preserving cultural identity. Tradition meeting progress creates a harmonious future. The research amplifies Badjao teens’ voices, aids Surigao City leaders in understanding their needs, boosts community pride, contributes to cultural understanding, enriches academic knowledge, refines cultural theories, empowers individuals, informs policies, and strengthens community well-being.

Yoga as an Integrated Therapy for Stroke Rehabilitation – A Case Study

/in /by

Background and Purpose: A stroke (cerebrovascular accident) is damage to the brain cells from an interruption of their blood supply due to blockage or rupture of an artery to the brain. It is the second-leading cause of death and long-term disability worldwide. The present study is a case report investigating the effect of yoga therapy in addition to acupressure and physiotherapy on activities of daily living and the quality of life of patients after stroke.  

Subject and method:  It is a single case study of 38-year-old women diagnosed with acute ischemic stroke who have chief complaints of loss of function of the left upper and lower limbs, and hypertension. For better management of stroke and recovery, she was undergoing yoga, physiotherapy, and acupuncture treatment in the CAM department at DSVV. The primary outcome measures were activities of daily living by the Barthel index and quality of life by the stroke-specific quality of life scale. The subject received integrated treatment for 12 weeks consisting of 45-minute, 1-hour yoga sessions 6 days a week, regular physiotherapy in the subject’s home, and acupuncture every 2 weeks. The primary outcome data were collected before and after the treatment intervention phase. 

Result: The subject had improved Barthel’s activity and quality of life score. 

Discussion and Conclusion: The results suggest that yoga integrated with other complementary therapies may be beneficial to stroke survivors in rehabilitation.

Legal Protection of the Rights Children Born Out of Wedlock: A Comparative Study in Indonesia and Malaysia

/in /by

Children born out of wedlock have the same human rights as those born within a legitimate marriage. This research aims to discuss how the law can play a crucial role in providing strong protection for the rights of children born out of wedlock, comparing legal regulations in family law between Indonesia and Malaysia. The research utilizes normative method of comparative legal analysis to examine regulations related to the legal status of children born out of wedlock within the legal systems of Indonesia and Malaysia. The results of this research indicate that in Indonesia, the protection of children born out of wedlock in terms of their rights can be fulfilled by both parents, and a child born out of wedlock can be acknowledged by the father as long as it can be substantiated through scientific knowledge or concrete legal evidence. Conversely, in Malaysia, the decision regarding the lineage of a child born out of wedlock lies entirely with the mother and her family, following the Shafi’i school of thought, and this has not changed to date. As a consequence, children born out of wedlock in Malaysia may lose their civil rights, including financial rights, custody, inheritance, and other rights from their biological father. Malaysian law also regulates penalties for individuals engaged in relationships outside of marriage to protect their lineage and prevent mixed-race offspring.

The Role of Driving Actors in the Social Capital Utilization in the Community

/in /by

Population density and lower class marginalization due to the development of elite areas have alienated a community over its identity. The driving actors behind every social change exist, and they utilize a change through the villagers’ literacy power. Mainstreaming views on the actors’ active roles in social change essentially impact knowledge in the sociology of ethnic and cultural society. This study aims to describe the hidden actors behind the phenomenon of cultural movements that exist and develop national and international relations. This paper applies qualitative data collected in a participatory manner through interviews with key actors in Kampung Cempluk Festival. Focus group discussions were conducted with actors involved in every festival held by the community. Informants selected by snowball were then interviewed about their perceptions, motivations, and a value embodiment process. Researchers did the literature study through writings, releases, newspapers, mass media opinions, and several previous researches. The results indicate that alienation will foster citizens’ critical awareness of development and cultural values impacts. It is supported by driving actors who can read the potentials and opportunities in society. Thus, this research becomes the basis for policymakers in planning development which should prioritize a cultural approach and consider the threat of hidden power loss in society.

Analyzing the Implications of the Growing Street Vendor Population in Gweru, Zimbabwe: A Risk Assessment

/in /by

This study investigates the consequences of the growing number of street vendors in Gweru, Zimbabwe, and offers a risk evaluation. The prominence of street vending can be attributed to several factors, including limited formal employment possibilities, poverty, inadequate education or skills, restricted job prospects, and exorbitant leasing expenses. The presence of restricted trading spaces also exerts a substantial influence. Although street selling is thought to have a positive effect on Zimbabwe’s economy, it is recognized that there are possible adverse consequences, such as noise pollution and overcrowding in public areas. Street selling is accompanied with several risks, such as concerns regarding sanitation, competition with established enterprises, traffic congestion, and potential safety dangers. In order to tackle these concerns, it is imperative for policymakers and urban planners in Gweru to enact efficacious laws and regulations that guarantee the establishment of secure, hygienic, and controlled street vending settings. It is essential to strike a balance between the requirements of various groups and to minimize any adverse effects. It is imperative to implement education and awareness initiatives aimed at promoting effective waste management practices. Gweru has the capacity to allocate specific areas for vending, enforce regulations regarding sanitation, control the quantity of traders and their operating hours, offer training and assistance to vendors, facilitate their transition into formal businesses, establish a structured market system, and engage in communication with the informal sector. This study highlights the significance of tackling the problems associated with street vending in order to promote sustainable development and enhance the quality of life for people. Efficient tactics are required to alleviate adverse consequences and foster a cohesive urban milieu.