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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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The Relationship Between Approval of Nursing Actions and Patient Satisfaction Levels In The Inpatient Ward of Bougenville 3, Dr. Loekmono Hadi Kudus Regional Hospital Mira Nur Febrianita; M. Purnomo; Edi Wibowo Suwandi
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.v6i4.820

Abstract

Consent for nursing actions is an important part of patient-centered care because it plays a role in improving communication, trust, and patient satisfaction. This study aims to analyze the relationship between consent for nursing actions and patient satisfaction levels in the Inpatient Room of Bougenville 3, Dr. Loekmono Hadi Kudus Regional General Hospital. This study used a quantitative correlation analytic design with a cross-sectional approach. The study population was 53 inpatients, with a sample of 47 respondents selected using a purposive sampling technique. Data were collected using the Quality of Informed Consent (QuIC) instrument and the Patient Satisfaction Questionnaire Short Form (PSQ-18). Data analysis was performed univariately and bivariately using the Spearman Rank correlation test with a significance level of 0.05. The results showed that 63.8% of respondents received consent for nursing actions in the good category and 59.6% had a very satisfied level of satisfaction. The Spearman Rank test showed a significant relationship between consent for nursing actions and patient satisfaction (p = 0.000; r = 0.919), indicating a very strong positive relationship. It was concluded that the implementation of improved nursing action agreements contributed to increasing patient satisfaction and therefore needed to be maintained and improved as part of efforts to improve the quality of nursing services.
Analysis of the Effects of Purified Used Cooking Oil Consumption on Nutritional Absorption Status: An Anti-Stunting Promotion Strategy Nurlaila Agustikawati; Rizky Nugrahani; Desy Fadilah Adina Putri; Sunarto Tetes Lugito
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.v6i4.798

Abstract

Stunting remains a critical global public health priority due to its long-term impacts on cardiometabolic disorders and neurocognitive deficits resulting from chronic malnutrition. At the household level, a hidden risk factor potentially triggering infection and nutrient malabsorption is the repeated use of cooking oil (used cooking oil). Chronic exposure to foods processed with used cooking oil can lead to nutritional malabsorption, indirectly increasing the risk of stunting in children. Although the adverse effects of used cooking oil have been widely documented, exploration into the efficacy of oil purification methods in restoring or improving nutritional status remains highly limited. This study employed an experimental research design with a factorial layout. Data analysis was performed using a One-Way Analysis of Variance (ANOVA) to compare differences across treatment groups, followed by a Tukey Post-Hoc test to determine specific statistically significant differences among the administered treatments. The Tukey Post-Hoc test revealed that the Purified Oil Treatment group (P) yielded the highest mean hepatic protein level (9,30±0,03%). This value was statistically significant (p < 0,05) compared to all other groups, namely the Control group (7,64±0,34\%), the fresh oil group (7,99±0,26%), and the used cooking oil (J) groups (7,60±0,45%). Meanwhile, no significant differences ( p > 0,05) in hepatic protein levels were observed among the Control (K), Fresh Oil (B), and Used Cooking Oil (J) groups. Furthermore, the Used Cooking Oil group (J) exhibited an extreme decline in hepatic iron accumulation, recording the lowest mean level (14,77±0,76 ppm), which was highly statistically significant (p < 0,001) compared to all other cohorts. Conversely, the Purified Oil Treatment group (P) demonstrated a significant recovery in iron absorption, with a mean value of 54,90±1,76 ppm. These findings indicate that the mean hepatic tissue analysis for iron and protein absorption showed virtually no alterations between the Control and Fresh Oil consumption groups. In contrast, the consumption of unpurified used cooking oil led to a substantial reduction in both iron and protein absorption. Remarkably, the consumption of purified cooking oil resulted in the highest enhancement of protein absorption alongside a significant recovery of iron levels compared to the used cooking oil group.
Application of K-Means and Random Forest Algorithms for Trader Segmentation and Activity Status Prediction at GKINVEST Ramadhan Alvito Alfian; Safrizal
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.v6i4.813

Abstract

Trader activities at trading firms exhibit heterogeneous characteristics, necessitating an analytical approach to identify segmentation patterns and trader activity status. This study aims to analyze GKInvest trader segmentation using the K-Means algorithm and to build a Random Forest model to predict trader activity status based on historical activity characteristics. The dataset comprises trader data with key variables including 30-day transaction volume, 30-day login count, 30-day transaction count, days since last activity (recency), account tenure, number of active days, and the number of instruments traded. K-Means was employed as an unsupervised learning method to establish segments, while Random Forest was used independently as a supervised learning method to classify active versus inactive status. The K-Means analysis yielded three segments: Passive Traders (Churn Risk) comprising 1,135 traders (56.7%), Highly Active Traders (VIP) comprising 437 traders (21.9%), and Regular Active Traders comprising 428 traders (21.4%). The Random Forest model achieved an accuracy of 83%; performance for the "Active" class reached a precision of 84%, recall of 93%, and F1-score of 88% (with a weighted average F1-score of 82%). Feature importance analysis revealed that 30-day transaction volume made the largest relative contribution (~0.218), followed by 30-day login count (~0.184) and 30-day transaction count (~0.183). The findings demonstrate that K-Means and Random Forest can independently provide complementary perspectives for understanding the activity characteristics and status of GKInvest traders, serving as a foundation for developing data-driven trader activity monitoring systems.
The Effect of Antiepileptic Drugs on Mood and Behavioral Changes in Children Aged 4–10 Years at Dr. Moewardi Regional General Hospital Lia falichatul wachidah; Fadhilah Tia Nur; Andhika Trisna Putra; Aisya Fikritama Aditya
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.v6i4.814

Abstract

Epilepsy in children involves not only the occurrence of seizures but may also be accompanied by mood and behavioral changes potentially linked to the disease characteristics or the use of antiepileptic drugs. Monitoring psychobehavioral changes during therapy is essential to support comprehensive clinical evaluation. This study aimed to analyze mood and behavioral changes in children aged 4–10 years following antiepileptic drug therapy and to evaluate the associations of drug type, dosage, duration of therapy, and treatment regimen with these changes. A quantitative approach using a prospective observational cohort design was employed. The study subjects consisted of 150 children aged 4–10 years with epilepsy receiving antiepileptic drug therapy. Data collected included demographic and clinical characteristics, drug type, dosage, duration of therapy, monotherapy or polytherapy regimens, pre- and post-therapy mood and behavioral scores, side effects, and treatment adherence. Analyses were conducted using paired-samples t-tests or Wilcoxon tests, ANOVA or Kruskal–Wallis tests, Pearson or Spearman correlations, and multiple linear regression, with a significance level of p < 0.05. The mean change in mood scores was 1.92 ± 2.30, and the mean change in behavioral scores was 2.47 ± 2.63. Statistically significant differences were observed between pre- and post-therapy scores for both mood and behavior (p < 0.001). Differences in score changes were observed based on drug type (p < 0.001); the levetiracetam group exhibited greater changes in mood and behavioral scores compared to several other drug groups. Multivariate analysis revealed that levetiracetam use and polytherapy regimens were associated with changes in mood and behavioral scores after adjusting for clinical covariates. Changes in mood and behavioral scores occurred in children following antiepileptic therapy, with variations observed based on drug type and treatment regimen. Monitoring mood and behavior should be an integral part of the evaluation of children with epilepsy during therapy. Interpretation of the results must take into account clinical and confounding factors and cannot be used to infer a causal relationship.
Analysis of Infaq Fund Management As A Social Safety Net For The Dhu'afa Community At Jami' Tanjungsari Mosque Agus Silaen Tampubolon; Efi Brata Madya
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.v6i4.824

Abstract

The management of mosque-based religious social funds plays an important role in strengthening social solidarity and assisting economically vulnerable groups. This study aims to analyze the management of infaq funds as a social safety net for the dhu'afa community at Jami' Tanjungsari Mosque. The study focuses on the mechanisms of planning, collection, distribution, utilization, and reporting, as well as the supporting and inhibiting factors in the management of infaq funds. This study employed a descriptive qualitative approach, with data collected through observation, in-depth interviews, and documentation. The research informants consisted of mosque administrators, the treasurer or infaq fund manager, community leaders, and beneficiaries from the dhu'afa community. The data were analyzed using the Miles, Huberman, and Saldaña model, which comprises data condensation, data display, and conclusion drawing and verification. The findings indicate that the management of infaq funds at Jami' Tanjungsari Mosque has been implemented through the provision of special infaq boxes for orphans and the dhu'afa, regular fund collection, the separation of social funds from the mosque's operational funds, financial record-keeping, beneficiary registration, aid distribution, and financial reporting to the congregation. The infaq funds are distributed in the form of rice, basic necessities, and cash assistance, which help beneficiaries meet essential needs, including food, electricity, school expenses, and daily necessities. However, the function of infaq funds as a social safety net remains periodic and consumption-oriented and has not yet fully developed toward sustainable economic empowerment. The main supporting factors include the congregation's trust, community participation, transparent reporting, and the close social relationship between mosque administrators and beneficiaries. Meanwhile, the inhibiting factors include limited funds, the absence of standardized criteria for identifying dhu'afa beneficiaries, and the suboptimal implementation of productive assistance. This study confirms that mosque-based infaq funds have strategic potential as an instrument of community-based social protection within religious communities when managed in a more systematic, transparent, accountable, and data-driven manner.
Competence, Qualifications and Employment Placement: Evidence From An Industrial City In Indonesia Wawan Gunawan; Sutisna; Gema Ika Sari
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.v6i4.826

Abstract

This study examines the effects of competence and qualifications on employment placement and investigates the mediating role of competitiveness in the context of Cilegon City, one of Indonesia's major industrial centers. Despite rapid industrial development, local workers continue to experience difficulties in securing employment, indicating a mismatch between labor market requirements and workforce characteristics. A quantitative approach was employed using a survey of 202 human resource personnel from 115 companies operating in Cilegon City. Data were analyzed using Partial Least Squares–Structural Equation Modeling (PLS-SEM). The findings reveal that competence and qualifications have positive and significant effects on employment placement and competitiveness. However, competitiveness does not significantly affect employment placement and does not mediate the relationship between competence, qualifications, and employment placement. These findings suggest that recruitment and placement decisions in industrial labor markets tend to prioritize direct indicators of human capital, particularly competence and formal qualifications, rather than relative competitiveness among job seekers. The study contributes to the human resource management literature by providing evidence from an industrial city context and offers practical implications for workforce development policies and industry-oriented training programs.
Formulation and Characterization of Gypsum and Silicone-Based Materials Based on Hounsfield Unit Values as a Basis For Developing Anthropomorphic Phantoms on Ct-Scan Lensy Novitasari; Siti Masrochah; Sigit Wijokongko
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.v6i4.831

Abstract

Computed tomography (CT) imaging requires phantoms with tissue-equivalent Hounsfield Unit (HU) values, but commercial anthropomorphic phantoms are expensive and have limited flexibility. This study aims to formulate and characterize gypsum and silicone-based materials based on HU values ​​as a basis for developing anthropomorphic CT phantoms. The study used a quantitative Research and Development (R&D) design with the ADDIE model. The population included potential materials for phantoms and anonymized CT images of patient heads. The sample consisted of six material formulas (two gypsum, four silicone) and 20 patient CT images. Instruments included a multislice CT scanner, a DICOM viewer with ROI tools, and precision measurement equipment. Data analysis used descriptive statistics on density, mean HU, percentage error, coefficient of variation (CV), HU difference between ROIs, and physical stability. The results showed that five of the six formulas met the accuracy criteria (error ≤15%), namely cortical gypsum (1.2%), trabecular gypsum (4.8%), muscle silicone (0.5%), gray matter silicone (9.9%), and white matter silicone (5.9%). Skin silicone exceeded the limit (26.2%). All materials showed excellent repeatability (CV 0.15–1.10%). The silicone material was homogeneous (HU difference ≤5 HU), while the gypsum was not homogeneous (12.7–13.0 HU). All phantoms were physically stable. Gypsum and silicone materials have the potential to be economical candidates for anthropomorphic CT phantoms, with the need for optimization of the skin silicone formula and gypsum homogeneity.
Legal Issues In Regulating The Movement of Persons In The Indonesia– Timor-Leste Border Area Victor Eben Sabuna; Gde Made Swardhana
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.v6i4.832

Abstract

Regulation of the movement of persons in border areas is essential for safeguarding state sovereignty while supporting the socio-economic interaction of cross-border communities. This study analyzes the role of Indonesian legislation in regulating human mobility in border areas. It employs a normative juridical approach through an analysis of laws and regulations and relevant literature. The findings indicate that Indonesia has a relatively comprehensive legislative framework, but implementation challenges remain, particularly regarding inter-agency coordination and the social conditions of border communities. International agreements governing traditional border crossers must also account for the continuing cultural ties and social relations among communities in state border areas.
Design-Stage Analytical and CFD Assessment of a Coconut Oil–Fly Ash Composite PCM Partition Wall with Fan-Assisted Ventilation for Tropical Residential Cooling Aldissain Jurizat; Usep Surahman; Galuh Kresnadian Tedjawinata
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.v6i4.833

Abstract

Masonry dwellings in tropical Indonesia often exceed the indoor comfort range on hot afternoons, encouraging reliance on split-unit air conditioning (AC). This study presents a design-stage assessment of a partition wall containing 918 polyethylene spheres (12 cm) filled with a coconut oil–fly ash composite phase change material (PCM; 50 vol% oil, 40 vol% fly ash, 10 vol% air) and assisted by exhaust fans (24 W in total), for two bedrooms of a Type-36 house in Bandung. A Maxwell-Eucken estimate indicates that fly ash raises the composite thermal conductivity from 0.17 to about 0.32 W/m·K (0.24–0.36 W/m·K). A quasi-steady melting analysis shows that capsule charging is limited mainly by surface convection: the latent heat absorbed during a 5-h afternoon (2.0–3.7 kWh for the whole wall) is similar to that of pure-oil capsules, while the composite uses 44% less oil and completes its melting cycle faster. The installed 373.8 kg of oil corresponds to a theoretical air-temperature reduction of up to 4.0 °C in the 49.5 m³ rooms. A steady-state CFD simulation (Butterfly/OpenFOAM) for the EPW design hour (9 December, 14:00; outdoor 29.0 °C), with the PCM surface prescribed at 25.5 °C, gives an indoor air temperature of 26.33 °C against 28.30 °C for brick partitions, within the ASHRAE 55 adaptive comfort limits. Operating electricity and CO₂ emissions are 95–97% lower than for two ½ PK AC units, with a simple payback of about 3.3 years; as the AC provides lower temperatures and dehumidification, these are upper bounds. Transient coupled simulation and prototype testing are required for validation.
The Implementation of Poverty Alleviation Policies and Their Impact on Crime Rates in DKI Jakarta Nur Hasanah; Muhammad Fauzan Ziefran; Nurliah Nurdin; Desiani
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.v6i4.834

Abstract

This study aims to analyze the implementation of poverty alleviation policies and their impact on crime rates in DKI Jakarta, as well as to identify the factors influencing policy effectiveness within an urban context. This research employs a qualitative approach using the Systematic Literature Review (SLR) method. Data collection was conducted through a literature search using the Publish or Perish (PoP) software across the Google Scholar and Scopus databases, utilizing keywords related to policy implementation, poverty, crime, and DKI Jakarta. The literature meeting the inclusion criteria was analyzed thematically to identify patterns, relationships, and research gaps. The findings indicate that the implementation of poverty alleviation policies contributes to a reduction in potential criminality by decreasing economic inequality, improving access to social programs, and empowering the community. However, policy effectiveness remains influenced by various factors, such as program targeting accuracy, inter-agency coordination, the impact of urbanization, and the spatial characteristics of the region. Furthermore, it was found that environmental and spatial planning factors also affect crime dynamics, indicating that the relationship between poverty and crime is non-linear. This research contributes to enriching the study of governance-based public policy implementation and emphasizes the importance of an integrated policy approach for poverty alleviation and crime prevention in metropolitan areas. Future studies are advised to combine a qualitative approach with empirical field data to obtain a more comprehensive understanding.

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