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International Journal of Science and Environment
Published by CV. Inara
ISSN : -     EISSN : 28090551     DOI : https://doi.org/10.51601/ijse.v2i4
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics
International Journal of Science and Environment (IJSE) is to provide a research medium and an important reference for the advancement and dissemination of research results that support high-level research in the fields of Science and Environment . Original theoretical work and application-based studies, which contributes to a better understanding all fields of Science and Environment. The aim and scope of the journal Chemistry, Chemical Analysis, Physical Chemistry, Physics, Biology, Ecology, Biodiversity, Zoology, Biochemistry, Mathematics, Environmental Science, Agriculture, Environment, Forestry.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 670 Documents
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Analysis of User Satisfaction Levels for Trans Jatim Bus Services in Malang City Using the Customer Satisfaction Method Index and Structural Equation Modeling Asnain Maulana Hakim; Henri Siswanto
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.836

Abstract

This study aims to analyze the level of satisfaction of Trans Jatim Bus users in Malang city using the Customer Satisfaction Index (CSI) and Structural Equation Modeling (SEM) methods. A quantitative approach was used through the distribution of questionnaires to active users. CSI measures the level of satisfaction based on the suitability of service performance with user expectations, while SEM analyzes the relationship between service quality, satisfaction, and loyalty. Variables include reliability, responsiveness, assurance, empathy, and physical evidence. The results show that the level of satisfaction is in the satisfied category, and service quality has a significant effect on satisfaction and loyalty. This study provides strategic recommendations for improving the quality of public transportation services in a sustainable manne.
Ecoacoustic Exploration of Bone Bolango Bamboo in the Tomini Bay Area for Polopalo Manufacturing as a Nusantara Cultural Heritage Rahmawati Ohi
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.837

Abstract

This study aims to explore the physical-acoustic characteristics of talilo huidu bamboo from Bone Bolango, Tomini Bay area, in the production of Polopalo, while formulating geometric standards to preserve local ecology and cultural heritage. Utilizing a qualitative method as the primary approach, this research integrates oral ethnoorganological studies with sound analysis via Fast Fourier Transform in Audacity as supporting data, alongside the sound philosophy concepts of the Gorontalo community. The results successfully formulate precise geometric standards for the Polopalo blade: a base length of 154 mm and a wall thickness of 10–12 mm with a proportional resonator hole to maintain traditional sound accuracy. Psychoacoustically, the mechanical structure of the instrument (Bulango and Elenggengo) is proven capable of emitting sound pressure that propagates effectively across 3 to 6 kilometers in open space as an agricultural communication tool. This physical standardization has been archived so that the instrument's revitalization process provides cultural-economic incentives for the community to ecologically preserve mountainous bamboo groves in the Tomini Bay area.
Temporal Dynamics of Carbon Dioxide (CO₂) Fluxes In Swamp Paddy Fields Based On Cultivation Age Ayatullah Hay; M Umar Harun; Tengku Zia Ulqodry; Bakri; Yakup
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.838

Abstract

Understanding the dynamics of carbon dioxide (CO₂) fluxes in lebak swamp paddy fields is important for assessing carbon cycling under different land-use histories. This study investigated CO₂ fluxes and their relationships with soil environmental properties across different land-use ages in Pelabuhan Dalam Village, Ogan Ilir, South Sumatra. Three land-use ages were evaluated, 0 years, representing uncultivated swamp as the baseline, 6 and 12 years of continuous paddy cultivation. CO₂ fluxes were measured in the field along with soil temperature, soil water content (SWC), electrical conductivity (EC), pH, soil organic carbon (SOC), bulk density, soil porosity, and soil permeability. CO₂ flux showed a nonlinear pattern, with mean values of 1.42 ± 1.29, 5.97 ± 1.29, and 4.27 ± 1.29 for (0, 6, and 12 year) land-use ages, respectively. However, differences among land-use ages were not statistically significant. Among the measured environmental variables, SOC showed a significant relationship with CO₂ flux (R² = 0.59, p = 0.015), while bulk density, soil porosity, SWC, soil permeability, pH, and EC were not significantly associated with CO₂ flux (p > 0.05). Strong correlations were observed among soil physical properties, particularly between bulk density and soil porosity (r = −1.00). These findings indicate that land-use age alone does not directly determine CO₂ flux, while changes in soil characteristics, particularly SOC, are associated with CO₂ dynamics in lebak swamp paddy fields. The findings provide a basis for evaluating soil carbon dynamics and supporting sustainable management of cultivated lebak swamp ecosystems.
Career Adaptability Among Vocational College Students: A Cross-Cultural Comparison of Indonesian and Chinese Students Siti Zalikha Naindra Wahyudin; Olievia Prabandini Mulyana
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.839

Abstract

Vocational graduates will enter labor markets that change faster than curricula, which makes the move from school to work less predictable. Career adaptability, the psychosocial resource people draw on to handle career tasks, transitions, and setbacks, can help them manage this move, yet few studies have compared it among vocational college students across countries. This study compared career adaptability between Indonesian and Chinese students enrolled in Diploma III or equivalent three-year vocational programs. Using a comparative cross-sectional design, we surveyed 250 students (125 per country) with the Indonesian and Chinese forms of the Career Adapt-Abilities Scale. Multi-group confirmatory factor analysis supported configural, metric, and scalar invariance, and the groups were then compared with Welch's t-tests at a Bonferroni-adjusted α of .01. Indonesian students scored higher on overall career adaptability, t(228.03) = 3.28, p = .001, d = 0.42, and on concern (p < .001, d = 0.52), control (p = .005, d = 0.36), and curiosity (p = .006, d = 0.35). The difference in confidence (p = .013, d = 0.32) did not reach the adjusted threshold. The pattern suggests that Indonesian students, whose training is less tightly connected to employment, invest more in planning and exploring their careers. Vocational institutions could pair technical training with career planning, exploration, and decision-making support that fits their own school-to-work system.
Comparison of Analysis Sefalometri Steiner Conventional Method versus Software AutoCAD Nur Iman Syahfik Wazan; Bergman Thahar
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.841

Abstract

Cephalometric analysis is an important examination in orthodontics to support diagnosis and treatment planning. In addition to conventional methods, cephalometric analysis can be performed using AutoCAD software. This study aimed to determine differences in Steiner cephalometric analysis between conventional methods and AutoCAD software, particularly in angular and linear measurements. A descriptive comparative study with a cross-sectional approach was conducted. A total of 30 lateral cephalometric radiographs were randomly selected, and each was analyzed using both conventional methods and AutoCAD 2010 software. The analysis involved identifying reference points, constructing lines and planes, and measuring angles and distances according to Steiner analysis. The data were analyzed using a paired t-test with a significance level of 5%. The results showed no statistically significant differences between the conventional method and AutoCAD in either angular or linear measurements. Therefore, the two methods produced measurements that did not differ significantly in the study sample. However, these findings do not directly establish that both methods have identical levels of accuracy.
Traumatic Attachment and Bonding In Toxic Relationships and Recovery Process: A Phenomenological Study Aisya Salsabila Amara Putri; Onny Fransinata Anggara
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.843

Abstract

Romantic relationships in early adulthood, which should be a source of security, can become dangerous if marked by coercive control and violence. Previous research has emphasized mechanisms of violence and dependency, while the experiences of survivors across gender lines in Indonesia have rarely been explored. This study explores traumatic bonds, trauma bonds, and the recovery process. Interpretive Phenomenological Analysis (IPA) was applied to semi-structured interviews, triangulated interviews, and field notes from two participants (a woman and a man) and their partners. Cross-case analysis reveals that the cycle of trauma bonds is maintained through intermittent reinforcement in the form of violence and affection for both participants, while the barriers to breaking free differ: vulnerability to the partner’s pleas in the case of the woman and a spiritual-symbiotic fear in the case of the man. Their paths to recovery differed, yet both aimed to restore decision-making autonomy and establish healthier relational boundaries. These findings underscore the importance of interventions focused on restoring a sense of safety and the ability to form healthy bonds. Future research should expand the participant pool to include individuals of various genders and cultural backgrounds, as well as explore subsequent stages of recovery.
The Relationship Between Social Media Use and Anxiety About Marriage Among Young Adults Syifa Rahma Sari Siregar; Onny Fransinata Anggara
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.844

Abstract

The marriage is scary phenomenon that has spread across social media reflects growing worry about married life among young people. Social media exposes users to stories of marital conflict, infidelity, divorce, and domestic violence, which may shape how individuals in early adulthood view marriage. This study examined the relationship between social media use and marriage anxiety in early adulthood using a quantitative correlational design with purposive sampling. Data were collected through an online questionnaire from 130 participants aged 18 to 29 years who actively use social media. Social media use was measured with a 15-item scale, while marriage anxiety was measured with 15 items selected from the Indonesian adaptation of the Taylor Manifest Anxiety Scale. Pearson correlation analysis in JASP showed a positive and significant relationship between social media use and marriage anxiety, although the strength of the relationship was weak (r = 0.227; p = 0.009). At the aspect level, social media use was significantly related to restlessness, physiological reactions, and sleep disturbance, but not to general fearfulness. These findings indicate that social media use is one of several factors linked to marriage anxiety. The study implies the need for critical digital literacy and premarital psychological support for young adults.
Improving The Critical Reading Skills of Fourth-Grade Students At Sdn 002 Sandaran Through Interactive Digital Comic Media Lelly Indra Wardana; Roekhan; Nita Widiati
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.847

Abstract

Elementary school students need to hone critical reading skills as a fundamental skill. This competence is not only concerned with understanding the text but includes identifying important information, analyzing events, giving reasons, finding textual evidence, and drawing conclusions. This research originated from the problem of low critical reading ability among fourth-grade students of SDN 002 Sandaran. Preliminary observations show that 15 out of 20 students (75%) had not met the criteria for learning completeness. The purpose of this study is to improve students' critical reading skills through the use of interactive digital comic media. The researcher used the Classroom Action Research (CAR) method in two cycles, including the stages of planning, action, observation, and reflection. The subjects consisted of 20 fourth-grade students of SDN 002 Sandaran. Data collection involved critical reading tests, observations, and documentation, analyzed through quantitative and qualitative descriptive approaches. The results of the first cycle showed that 11 students (55%) had achieved completeness. Implementing improvements in the second cycle based on reflection increased the number of students who completed to 16 (80%). The learning completeness rate increased by 25 percentage points from Cycle I to Cycle II. These findings prove a significant improvement in students' critical reading skills after using interactive digital comic media. The media is an effective alternative in Indonesian language learning to help students dissect texts, analyze data, and convey evidence-based arguments.
Formulation and Acceptability of Spinach Pudding Sponge Cake as an Alternative Iron-Source Snack for Adults Bellinda Dwi Septi Arifiyanti; Romyun Alvy K; Ika Mustika
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.848

Abstract

Spinach leaves are a food ingredient with potential for snack product development because they contain various nutrients, particularly iron. This study aimed to determine the nutritional content and acceptability of a green spinach leaf pudding sponge cake as an alternative snack for adults. An experimental study was conducted at the Laboratory of the Faculty of Psychology and Health, UIN Sunan Ampel Surabaya. Acceptability was assessed by 30 untrained panelists using a seven-point hedonic scale covering color, aroma, taste, texture, and overall acceptance. Nutritional content was estimated from the composition of the ingredients used, and differences in organoleptic scores were analyzed using the Wilcoxon test. The spinach product contained 196.08 kcal of energy, 4.02 g of protein, 29.66 g of carbohydrate, 0.36 g of fiber, and 0.41 mg of iron per piece. A significant difference was found in taste (p = 0.031), whereas color, aroma, texture, and overall acceptance did not differ significantly. However, the calculated iron content of both products was identical. Therefore, further development of this product requires re-verification of the nutrient calculations and laboratory analysis to confirm its iron content
Evaluation of Bacterial Colonization Following Aesthetic Thread Implantation in Guinea Pigs Using Mannitol Salt Agar Culture M. Hafid Ernanda; Diniwati Mukhtar; Endang Purwaningsih; Yulia wiji purnamasari
International Journal of Science and Environment (IJSE) Vol. 6 No. 4 (2026): November 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i4.861

Abstract

Background: Infections following aesthetic thread implantation may cause abscesses, tissue damage, and the need for thread removal. Microbiological evaluation under standardized implantation conditions may complement clinical complication reports and inform assessments of procedural safety. Objective: To assess bacterial growth on mannitol salt agar (MSA) in tissue swab samples collected around thread implantation sites in guinea pigs. Methods: This descriptive microbiological analysis presents three thread implantation groups from a parent laboratory experiment, comprising nine female guinea pigs receiving polydioxanone (PDO), polycaprolactone (PCL), or APTOS NAMICA. All study thread products held marketing authorization from the Indonesian Ministry of Health and were implanted aseptically. Each group comprised three animals, with one animal euthanized on each of days 3, 7, and 21. Four sites per animal yielded 36 subcutaneous tissue swab samples. MSA cultures were incubated at 37°C for 24–48 hours. Findings were summarized as the number of samples showing growth relative to the number examined. Results: No colonies grew in any of the 36 samples obtained from nine animals. At each sampling time, all 12 samples from three animals were culture-negative. The same finding was observed in all three groups. Conclusion: No bacterial growth was detected on MSA in tissue swab samples collected around implantation sites through day 21 under the study conditions. These findings provide culture data following aseptic implantation of authorized thread products, with interpretation limited to the sampling sites, observation period, and methods used. Selection of authorized thread products and consistent aseptic technique remain important considerations for procedural safety.

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