Author: admin_irjstem

Shelf life of Tomato (Solanum lycopersicum) in different post-harvest treatments

admin_irjstem Abstract , , , ,

Justine V. Gemida, Roniel A. Ardeña, Chiremy T. Pillones
Corresponding Email: ronielardena20@gmail.com

A B S T R A C T

This study was carried out in order to evaluate the tomato’s (Solanum lycopersicum) shelf life in different postharvest treatments in terms of color, firmness, percent weight loss, and percent weight of tomato. Study result would help farmers to adopt alternative techniques to protect and extend the shelf life of tomato. Four treatments were applied: t0- tap water treatment (control); t1- hot water treatment; t2- UV-C light treatment; and t3- seaweed treatment. Five (5) times each of these treatments were replicated in a completely randomized design (CRD). Data were collected, tabulated, and subjected to Analysis of Variance (ANOVA) using the Statistical Tool for Agricultural Research (STAR). Comparison among means made at a 5% level of significance using Tukey’s Honest Significance Difference (HSD). Seaweed treatment at 3% concentration, hot water treatment for 20 minutes, and UV-C light treatment for 20 minutes had the same effect but significantly maximized the shelf life of tomatoes than tap water treatment during 30 days of storage, seaweed treatment at 3% concentration significantly delays the color of the shelf life of tomatoes among treatments during 30 days of storage, seaweed treatment is significantly firmer than the tap water treatment but is comparable to UV-C light treatment and hot water treatment. Thus, seaweed treatment, UV-C light treatment, and Hot water treatment have the same effect on the firmness of the shelf life of tomatoes in storing 30 days; seaweed treatment at 3% concentration is significantly lowest in percent weight loss than tap water and hot water treatment but is comparable to UV-C light treatment in storing 30 days. As a result, both UV-C light and seaweed treatments have the similar effects on tomato weight loss. Both may thereby lessen tomato weight loss during storage.

Full Paper PDF

Investigation of antimicrobial potencies of mixed-ligand complexes of divalent metal ions with Barbituric acid and 2,2-Bipyridine

admin_irjstem Abstract , , ,

Oluwabiyi J. Olaoye, Mary A. Oladipo, Kayode T. Ishola, Omobola A. Odedokun, Olayinka G. Ogunlade
Corresponding author: Isholatk@gmail.com

A B S T R A C T

The development of resistance by many pathogenic microorganisms towards many conventional antibiotic drugs has now become one of the major worldwide health challenges, which requires a search for more effective drugs to combat the growing threat of widespread antibiotic resistance. Therefore, in an attempt to search for new and effective antibiotic drugs, antimicrobial potencies of mixed ligand complexes of Cu (II), Co (II), Ni (II) involving barbituric acid and 2,2-bipyridine chelating agents were examined. The mixed-ligand complexes were synthesized and the formation of the complexes was established using elemental analysis, metal analysis, melting points, solubility test, infra-red and Uv-visible analysis. The complexes were investigated for their pharmaceutical exploits against bacteria (Bacillus substilis and Staphylococcus aureus, Pseudomonas aeruginosa and Clostridium spp.) and four fungi (Aspergillus flavus, Aspergillus niger, Saccharomyces cerevisiae and Candida albican). Three conventional antibiotic drugs were employed as reference drugs. The formation of the metal complexes in ratio 1:1:1 and molecular formulas were confirmed via elemental and metal analyses. The purity of the metal complexes was ascertained by the sharp melting points. Infrared spectroscopic analysis revealed the formation of coordination bonds between the ligands and the metal ions through nitrogen and oxygen donors. The formation of the metal complexes was substantiated by UV-visible electronic transitions. The diversity of antimicrobial activities was displayed by the metal complexes against the pathogenic organisms at inhibitory zones of 6 mm – 25 mm. The metal complexes produced more significant antimicrobial activity than the standard drugs and succeeded where the standard drugs failed. The complexes could be considered potential antimicrobial agents to replace the less effective conventional antibiotic drugs. The toxicity of the metal complexes should be evaluated to establish their suitability for replacement.

Full Paper PDF

Adaptive Strategies amidst an Emerging Educational Trend: What Teachers Should Know?

admin_irjstem Abstract , , , ,

Samson M. Lausa, Lover Joy N. Embao
Corresponding email: smlausa@nonescost.edu.ph

A B S T R A C T

This study examined the flexible learning strategies of pupils of one private elementary school in Negros Occidental, Philippines enrolled in the school year 2020-2021. This quantitative study used a descriptive method with 88 pupils who responded to the validated and reliability-tested survey questionnaire. The frequency and percentage distribution, mean, t-test, ANOVA, and Pearson R Product Moment of Correlation Coefficient were used to interpret the results of the study. The findings indicated that participants’ sexual profile, grade level, and sample size were evenly distributed. The use of; planning strategy, doing strategy, reflection strategy, emotional response strategy, and helpline strategy as adaptive learning strategies in flexible learning modality is to a great extent. Moreover, findings showed that no significant difference exists in the utilization of these adaptive strategies except in the aspect of age, educational background, and occupation of the father which showed significant results. Likewise, a significant relationship was revealed between the adaptive learning strategies and the academic achievement of participants as a whole and when grouped as to learning strategy.

Full Paper PDF

Some applications of linear congruence from number theory

admin_irjstem Abstract , , , , ,

Senad Orhani, Besim Çeko
senad.orhani@uni-pr.edu

A B S T R A C T

In this research, two distinct areas of number theory and its use in computer science are combined. In this article, an investigation was conducted on the implementation of solutions to linear congruence problems. Linear congruence is a concept implying that two integers a and b are congruent modulo m (denoted as ?? (??? ≡ ?)), if the difference between them is exactly proportional to ?. The study is important in the field of number theory and computer science which brings many benefits and efficient solutions to various problems. Therefore, the study investigates the application of linear congruence through illustrative examples, to apply number theory in finding the ISBN number, in converting decimal numbers to binary, octal, and hexadecimal, and its application in encoding and decoding messages from the field of cryptography. This section of the paper can make it easier for mathematicians to apply problems involving linear congruences, especially for those who need basic expertise in number theory. The findings of the study show that the compatibility of the book ISBN format can be checked through linear congruence. Additionally, these findings demonstrate your understanding of how to convert decimal values to binary, octal, and hexadecimal using linear congruence in a fairly comprehensive manner. Additionally, because the idea of a linear congruence system is employed in the encoding and decoding of codes for network security and other purposes, the findings of this study may be helpful to researchers working in the field of cryptography.

Full Paper PDF

Volume 3 | No. 1 | March 2023 Issue

admin_irjstem Issue

March 2023

V3N1Cover_sample

Suicidal risks and coping strategies of student personnel assistants in a southern Philippine college
Daryl B. Casamorin, Henry E. Lemana II, Sherry V. Mecida, Cathy D. Calong, Angelica S.Padilla, Bria Ysabela O. Santiago, John Lloyd B. Mestidio, Kenn N. Tulod, Michael E. Ganayo III, Paloma B. Ladrido, Ralf Vincent P. Bagual
Notre Dame of Tacurong College, Tacurong City, Sultan Kudarat, Philippines

Full Paper PDF Abstract 1-15

Socio-demographic characteristics and perceived constraints of the farmers to crop production in selected barangays of Cawayan, Masbate, Philippines
Jacob Fredrick P. Velza, Roger Y. Ibañez, Jr., Novy R. Clores, Donata L. Valler
Cawayan Campus, Dr. Emilio B. Espinosa Sr. Memorial State College of Agriculture and Technology, Philippines
Graduate School, Dr. Emilio B. Espinosa Sr. Memorial State College of Agriculture and Technology, Philippines

Full Paper PDF Abstract 16-30

Factors affecting the readiness of digital transformation adopters: A case study in Vietnam
Vinh T. Nguyen, Hue T. Lai, Quynh V. Ha
TNU – University of Information and Communication Technology, Vietnam

Full Paper PDF Abstract 31-42

Level of nationalism and level of heritage conservation of pre-service teachers
Ginuel Janzent Alcantara, Jherwin P. Hermosa
Lutucan Central School, Philippines
Laguna State Polytechnic University, Philippines

Full Paper PDF Abstract 43-54

Basic level English as foreign language teachers’ experience about English medium instruction  
Hari Prasad Tiwari
Mahendra Multiple Campus, Nepalgunj Tribhuvan University, Nepal

Full Paper PDF Abstract 55-63

Nursing mothers: Adverse events following immunization and its implication for counselling
Kikelomo O. Adubi, Bolanle M. Oyundoyin, Adijat M. Ariyo, R. A. Adekunbi, Abolanle O. Lasode
Department of Home Science and Management, College of Food Science and Human Ecology Federal University of Agriculture, Abeokuta, Nigeria

Full Paper PDF Abstract 64-77

Gender sensitivity in physical education classes in one state college
Ramonito N. Abesar
Northern Negros State College of Science and Technology

Full Paper PDF Abstract 78-90

The influence of e-commerce adoption on the success of MSMEs in Empat Lawang Regency in the Covid-19 pandemic
Revita Desi Hertin
Faculty of Economy and Business/Jakarta Global University/Indonesia

Full Paper PDF Abstract 91-104

Integrating STEM education: A comprehensive framework for analyzing mathematics classrooms at a primary school
Huey Lei, Tony Li, Janice Ao
University of Saint Joseph, Macao SAR China
Colégio Diocesano de São José, Macao SAR China

Full Paper PDF Abstract 105-116

Professional life quality as correlate to job satisfaction of public elementary teachers: Basis for mental health fatigue solace program
Anthony S. Gonzales, Dennis G. Caballes
Cagmaslog Elementary School, Philippines
National Teachers College, Philippines

Full Paper PDF Abstract 117-133

The development of a disruption responsive smart room technology with attendance management system
Jennifer P. Juaneza
Carlos Hilado Memorial State University-Binalbagan Campus, Philippines

Full Paper PDF Abstract 134-149

The development of a disruption responsive smart room technology with attendance management system

admin_irjstem Abstract , , ,

Jennifer P. Juaneza
jennifer.juaneza@chmsc.edu.ph

A B S T R A C T

This paper discusses the development of a disruption responsive smart room technology with an Attendance Management System. It outlines the key features of the technology, such as the use of sensors to identify environmental changes, the creation of algorithms to comprehend and react to these changes, and the integration of smart devices to facilitate smooth communication and control. The disruptive responsive technology has transformed traditional processes and industrial practices combined with the latest smart technology that evolved locally and globally. The proponent of this study created the Development of a Disruption Responsive Smart Room Technology, which will allow modern technologies to be used to generate a substantial difference from the traditional ones. The objectives of this study were to establish an RFID (Radio Frequency Identification)-based registration and identification system for faculty and students that will help with the accuracy of attendance management and an electrical supply relay socket that will enable the function of a smart room technology that will give the faculty the power to control the devices connected to and networked with a mobile console. The automatic temperature change based on the humidity levels of the room utilizing the humidity sensor is another highlight of the study. The technology needs to be linked to a network and the internet in order to function as intended. The researcher used Developmental Research in this study and utilized the Agile Methodology, which includes all of its phases. Its purpose is to assess the research effectiveness and efficiency with an excellent rating from its respondents. The paper concludes with an evaluation of the potential issues with the technology’s development and application and provides recommendations for further research in this area.

Full Paper PDF

Professional life quality as correlate to job satisfaction of public elementary teachers: Basis for mental health fatigue solace program

admin_irjstem Abstract , , , ,

Anthony S. Gonzales, Dennis G. Caballes
Corresponding email: anthony.gonzales003@deped.gov.ph

A B S T R A C T

Teachers’ professional life quality and job satisfaction are essential factors in the success of their careers as prime movers of learning. This study explored the relationship between professional life quality and job satisfaction of public elementary teachers through a descriptive[1]correlational research design. Pearson Product Moment correlation was used to assess the relationship between variables, while multiple regression analysis was also utilized to bolster the link between professional life quality and the job satisfaction of teachers. The findings of the study revealed that indebtedness, health and safety, financial literacy, and family responsibilities subscales sometimes and fairly affect their professional life quality. Teachers have a very high level of satisfaction on community linkages, high level of satisfaction on job responsibilities, while security and working environment have fair levels of job satisfaction. Furthermore, professional life quality has a significant relationship on the job satisfaction of teachers. The recommendations provide information to the school leaders and the human resource department, allowing them to focus on key aspects that could improve the satisfaction, welfare, and well-being of their employees. The findings of this study can be utilized for the development of interventions and policies that can enhance the quality of life and job satisfaction of teachers, leading to a more engaged and productive workforce in the education sector.

Full Paper PDF

Integrating STEM education: A comprehensive framework for analyzing mathematics classrooms at a primary school

admin_irjstem Abstract , , ,

Huey Lei, Tony Li, Janice Ao
Corresponding email: lei.huey@usj.edu.mo

A B S T R A C T

This paper presents an overview of a STEM (Science, Technology, Engineering and Mathematics) project implemented at a primary school in Macao SAR, that integrated pedagogical consideration on a rocket building competition. The project adopted an analytical tool as a theoretical framework for integrated STEM education. It exploited a modified analytical tool, grounded on the in-depth analysis of design, implementation, and evaluation of the project, called integrated STEM education framework in practice (iSTEMiP). The theme of the project covered space exploration combining a real-life problem and encouraging students to respond to manageable challenges. Its design focused on providing students with hands-on experience in integrating mathematics, engineering, and science knowledge within the exercise. For the participants of the project, a class of grade four students joined the STEM competition designed by a STEM team consisting of two teachers at the school. The students formed groups and were aided by the teaching team through instructional scaffolding, while the students constructed their own design rockets, step-by-step, integrating the acquired knowledge. Implementation of the project included the design stage of the rockets, group sharing activities, and the launch of the rockets. The major findings of the study discover students’ learning trajectories and teachers’ teaching flows by the critical features of the modified theory of iSTEMiP. Specifically, the mathematical concepts involving angles and projectiles were prominently shown to have been used from analyzing the work done by the students. Moreover, the study found that the participants expressed positivity toward the learning experience of the STEM project.

Full Paper PDF

The influence of e-commerce adoption on the success of MSMEs in Empat Lawang Regency in the Covid-19 pandemic

admin_irjstem Abstract

Revita Desi Hertin
revita@jgu.ac.id

A B S T R A C T

Technological developments in today’s modern era are increasing and spreading widely in society. This also has an impact on the business world in Indonesia, especially on how to purchase from conventional/direct purchases to online purchases using social media platforms and e[1]commerce platforms in Indonesia. This should be in line with the marketing strategy for business people in regions in Indonesia. A new marketing strategy must be carried out by business players in the industrial 4.0 era, the large number of competitors encourages all business players to provide new breakthroughs in the buying and selling process, including marketing products/services on e-commerce platforms and social media market places. Features in e-commerce such as lower prices, review features that make it easy to see product quality, and more complete product descriptions make it the right platform for buyers who want to buy goods online where activities occur more effectively and efficiently. This study aims to examine the influence of e-commerce in the progress of Micro, Small, and Medium Enterprises (MSMEs) in Empat Lawang Regency during the Covid-19 pandemic. Using several variables, namely accessibility, price, and quality of goods, they are included in a questionnaire distributed to MSME actors in Empat Lawang Regency. The results of this study indicate that all variables in this study have a positive effect on sales at UKMK in Empat Lawang and show the importance of using new methods in sales. In future research, it is expected to be able to add several variables to see the relationship with sales using e-commerce.

Full Paper PDF

Gender sensitivity in physical education classes in one state college

admin_irjstem Abstract , ,

Ramonito N. Abesar
rabesar@nonescost.edu.ph

A B S T R A C T

Gender sensitivity is a process by which individuals are made mindful of how sexual orientation plays a critical parcel in life through overseeing others. This study aims to determine gender sensitivity in a physical education class in one state college. It employs a descriptive type of research. The respondents are the Physical Education students taking up P.E.102 and P.E.224. In this study, the mean and t-test were used as statistical tools. Study shows that P.E. 102 (Rhythmic Activities) classes are female-dominated with a strong willingness to explore their talents and skills, while males have limited participation due to reservations. Moreover, P.E.224 (Team Sports) is male-dominated where males showed too much interest in ballgames, while females are reserved and less motivated. Females needed more time for training to master certain skills. Moreover, the study’s results showed that there is no distinguishable difference in the degree of gender sensitivity in Physical Education Classes as perceived by the students when taken as a whole and when grouped according to sex. Therefore, it is recommended that teachers of Physical Education classes should develop a method that is the interactive type to increase gender sensitivity among students. The development of instructional intervention by the faculty and administration to increase awareness of gender issues should be encouraged as mandated.

Full Paper PDF