cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Arman Harahap
Contact Email
armanhrahap82@gmail.com
Phone
+6285370005518
Journal Mail Official
ijersc@gmail.com
Editorial Address
Jl. SM. Raja, Kota Rantauprapat, Sumatera Utara, Indonesia
Location
Unknown,
Unknown
INDONESIA
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 213 Documents
 5   6   7   8   9 
Technical Efficiency in Bitter Melon Plants Using Data Envelopment Analysis (DEA) Model in Tanah Laut District Pertiwi Pohan, Rana; Ferrianta, Yudi; Dewi Yanti , Nuri
International Journal of Science and Environment (IJSE) Vol. 4 No. 4 (2024): November 2024
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v4i4.113

Abstract

Farm technical efficiency involves maximizing output while minimizing input costs. In Tanah Laut Regency, bitter melon production fluctuates annually due to climatic factors and inefficient input use. On average, farmers use 0.47 hectares of land, 166 grams/ha of seeds, 2,659 kg/ha of organic fertilizer, 208 kg/ha of inorganic fertilizer, 7.08 liters/ha of liquid pesticides, 7.24 kg/ha of solid pesticides, and 339 HKSP of labor. Data Envelopment Analysis (DEA) indicates that farmers are technically inefficient, with average technical efficiencies of 80.8% (CRS-DEA), 89.9% (VRS-DEA), and 89.8% (SE-DEA). Among the farmers, 32% operate under increasing returns to scale (IRS), 26% under constant returns to scale (CRS), and 42% under decreasing returns to scale (DRS). A logit regression model reveals that education level, farming experience, and number of family members significantly impact technical efficiency, while age, land ownership status, and off-farm income do not. To enhance efficiency, farmers should reduce input use by emulating the practices of their more efficient peers.
Macrozoobentos Composition In The Babura River Sumatra Utara Sinambela, Masdiana; Simorangkir, Andreas; Silaban, Frends
International Journal of Science and Environment (IJSE) Vol. 4 No. 4 (2024): November 2024
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v4i4.114

Abstract

To determine the composition of macrozoobenthos in the waters of the Babura river. The parameters measured are biological parameters, namely macrozoobenthos composition supported by physical and chemical parameters in the Babura river waters. The parameters measured in this research are biotic parameters, namely the type of macrozoobenthos and abiotic parameters, namely physical and chemical parameters. Physical parameters such as: temperature, turbidity, and chemical parameters such as: pH (degree of acidity), (DO), BOD, COD, and phosphate. Taking macrozoobenthos in shallow water using a quadrant and in deep water using an Eckman grab. Physical/chemical parameters are measured in situ and ex situ. Ex-situ is carried out in the BTKL laboratory. This type of research is ex-post de facto or only reveals existing data. Macrozoobenthos composition found in the Babura river: 1. There are six species of insects, namely Chironomus sp, Aeshna grandis, Dragonfiy nymph macronia, Agrion sp, Damsefly nymph, Dragonfly; 2. There are eight species of gastropods, namely: Thiara winteri, Thiara sp, Melanoides tuberculata, Melanoides rustica, Melanoides gramnifera, Brotia testudinaria, , Planorbis sp, Lymnaea rubiginosa; 3. There are two species of Hirudinea/Clitellata, namely Leeches and Glossiphoniidae; 4 There is one species of trematode, namely Pomatiopsis lapidaria Say; 5. There is one species of crustacean, namely Gammarus sp; 6. There is one species of nematode, namely the rolled worm; 7. There is one species of Oligochaeta, namely Tubifex sp; 8. There are three species of Turbilaria, namely Planaria sp, Dugesia sp, Mesostoma sp, so the macrozoobenthos composition consists of 8 classes with a total of 23 species. Physical/chemical parameters still support macrozoobenthos life in the waters of the Babura river.
Nira Production In Terms Of Slope Level In South Tapanuli District Erwin Harahap, Darmadi; Astuti Kuswardani, Retna; HS Siregar, Tumpal; Darwis, Muhammad
International Journal of Science and Environment (IJSE) Vol. 4 No. 4 (2024): November 2024
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v4i4.115

Abstract

South Tapanuli is located at an altitude of 0 to 1,985 m above sea level, where almost at all levels of this altitude we will find sugar palm plants growing wild. The purpose of this study was to evaluate the relationship between slope gradient and sugar palm plant productivity in South Tapanuli Regency. The research method used was the field survey method on sugar palm stands used as sample plants with various levels of slope gradient. Furthermore, the data obtained in the field were tabulated and processed using linear regression. The results of the study showed that the slope gradient was negatively correlated with sap production, meaning that the higher the slope gradient, the lower the sap production. The highest sap production was found at an altitude of 400 - 800 meters above sea level with a slope gradient of 8 - 15% with a sap production of 14.27 liters / day.
The Comparison of Reservoir Impoundment Duration between Ground Observation and Satellite Precipitation Product over Karian, Indonesia Adhi Priyambodho , Bambang; Tiffanyputri Kristiani, Anugerah; Kurniawan, Vittorio; Yulihastin, Erma; Nugraha Putra Herlambang , Rizky; Qodrita Avia , Lely; Satyawardhana , Haries; Wigati , Restu; Subekti , Subekti; Putu Purnaditya , Ngakan; Setyo Nugroho, Paulus
International Journal of Science and Environment (IJSE) Vol. 5 No. 1 (2025): February 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i1.121

Abstract

The initial filling phase of reservoirs is a critical period that demands close supervision to ensure safety and functionality. During this phase, the dam is slowly filled with water, submerging floodplains until it reaches its intended storage capacity. This process assesses the response of the dam to water filling and its overall safety, with continuous monitoring and evaluation against design standards. The duration and rate of filling depend on several factors, i.e., precipitation, dam height, and hydropower plant sensitivity; thus, precipitation was the prominent driving force. However, as continuous precipitation data, multi-satellite global precipitation maps under the Global Precipitation Measurement near-real-time (GSMaP NRT) satellite products offer an alternative but tend to underestimate or overestimate rainfall values, posing challenges for accurate predictions. Bias correction methods of GSMaP NRT product in the spanning period of 2005–2022 demonstrated in agreement with ground observation data through the application of the artificial neural network (ANN) method to reduce the error bias to produce reliable results. This study highlights the importance of the impoundment period for reservoir sedimentation and overall dam safety. It emphasises the need for accurate precipitation data in reservoir management and recommends rigorous bias correction when using satellite data to substitute ground measurements.
Quality Nutrient Identification in Liquid Organic Fertilizer (Goat Urine and Banana Stumps) and Its Application on Growth of Chili (Capsicum frutescens) Bahaduri Indraloka, Aldy; Ilham Hilal, Mohamad; Salam Junaedi, Abdus
International Journal of Science and Environment (IJSE) Vol. 5 No. 1 (2025): February 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i1.122

Abstract

Agricultural waste such as goat manure and urine could be a source of environmental pollution and a source of disease if it can’t be processed into beneficial fertilizer. The use of organic fertilizers could increase plant growth and can prevent land quality degradation, but some of the weaknesses in the application of organic fertilizer are the lack of information on nutrient content and its effects on plant growth. The aim of this research is to analyse the fermentation periods for producing the highest macro nutrient in liquid organic fertilizer made from goat urine and banana stumps. The results showed that the effect of the fermentation periods gave different results of macro nutrients. The recommendation for fermentation periods required to produce the highest macro nutrient content was P2 (21 days), the percentage value of nutrients in (P2: 21 days) were Nitrogen (1.83%), Phosphorus (0.56%) and Potassium (1.20%). The research results also showed that the P4 treatment (20 mL of liquid organic fertilizer) giving the highest value on several parameters in chili (height, number of leaves, fresh weight, root length, number of flower and fruits). P1 and P3 recommended for appearance of flowers (30 DAT) and P4 recommended for stimulating fruit primordia.
Uncovering the Environmental and Social Impacts of Renewable Energy Use in the Halal Industry: Empirical Evidence from Indonesia Shulthoni, Muhamad; Khoirul Fikri, Muhammad; Hermawan Adinugraha, Hendri
International Journal of Science and Environment (IJSE) Vol. 5 No. 1 (2025): February 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i1.144

Abstract

This research aims to uncover the environmental and social impacts of using renewable energy in the halal industry in Indonesia. Using a case study-based qualitative approach, this research explores the implementation of renewable energy, such as biomass and solar panels, in several companies in West Java, East Java, and West Sumatra. Data collection techniques included in-depth interviews, participatory observation, and document analysis, which were thematically analyzed to identify implementation impacts and challenges. The results show that using renewable energy has reduced greenhouse gas emissions by 30% in the last five years and reduced water and soil pollution by 40%. Socially, the implementation created green jobs, empowered local communities, and improved people’s quality of life through access to clean energy. The study identifies key challenges, such as high initial investment and lack of energy literacy among industry players. This research offers a novel contribution by integrating environmental, social, and Sharia sustainability values in the impact analysis of renewable energy. The practical implications include the need for government incentive policies, workforce training, and multi-sectoral collaboration to support the sustainable transformation of the halal industry in Indonesia.
Eco-Friendly Biopolymer Management For Sustainable Plastic Solutions: Applications, Challenges, And Implementation Strategies Sadali, Muhammad; Taufiq Abadi, Muhammad; Akbar Fadzkurrahman A, Muhammad
International Journal of Science and Environment (IJSE) Vol. 5 No. 1 (2025): February 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i1.145

Abstract

The use of single-use plastics derived from fossil fuels has been a major cause of environmental pollution. As a solution, biopolymers based on renewable resources have emerged as an environmentally friendly alternative. This article examines the development, challenges, and implementation strategies for biopolymers in providing sustainable plastic solutions. The discussion begins with an introduction to biopolymers, their types, and applications in replacing fossil-based plastics in various industrial sectors. It is found that although biopolymers offer environmental advantages, key challenges include higher production costs, limited raw materials, and waste management. The article also discusses the role of government policies, technological innovation, and multisectoral collaboration in accelerating biopolymer adoption. With appropriate policies, infrastructure development, and increased consumer awareness, Indonesia has great potential to lead sustainable biopolymer production.
Supply Chain Of Fresh Fruit Bunches From Independent Oil Palm Farmers Sarkum, Sumitro; Harahap, Arman
International Journal of Science and Environment (IJSE) Vol. 5 No. 1 (2025): February 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i1.146

Abstract

The purpose of this research is to determine the supply chain losses caused by fluctuations in the selling price of Fresh Fruit Bunches (FFB).  The method used is to conduct direct surveys with palm oil Fresh Fruit Bunch (FFB) traders and end consumers at Palm Oil Mills in nine sub-districts in Labuhanbatu Regency.  The planned number of samples to be interviewed is 800 respondents, consisting of 784 Collecting Traders and 16 SMEs, with a total of 256 respondents successfully interviewed.  The research results explain the factors influencing the fluctuation of TBS purchase prices at the supplier level, namely the lack of transparency in TBS selling prices from Palm Oil Mills to traders and from traders to farmers.  The findings also suggest that the local government should establish a special institution that can provide information on palm oil prices released by the government through the North Sumatra industry office. In addition, we recommend that the North Sumatra government involve district governments and other stakeholders in the context of the triple helix in sustainable development, considering the imbalanced needs and productivity in implementing national strategic programs.  The next research question is about the sustainability of small-scale oil palm farmers, considering the continuous growth of oil palm.  Policymakers in key stakeholder institutions need to design strategies to manage global disruptions in palm oil trade, particularly by involving farmers in national strategic programs, one of which focuses on concentrating development on palm oil downstreaming.
Mapping Poverty Alleviation in Garut Regency: An Actor-Network Theory Perspective on Collaboration and Actor Interactions Geusan Akbar, Gugun; Muchtar, Muchtar; Pundenswari, Pupung; Ginting, Seriwati
International Journal of Science and Environment (IJSE) Vol. 5 No. 1 (2025): February 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i1.147

Abstract

This study investigates the essential yet frequently ignored function of trust in data governance networks for poverty alleviation programs in Garut Regency, Indonesia, based on Actor-Network Theory (ANT). The research employed a qualitative method which included 35 in-depth interviews with government officials from Social Service, Regional Planning Agency, and Baznas together with beneficiary community members and Focus Group Discussions with Regional Government Organizations and Village Heads. The research demonstrates that poor trust between human actors (government-community) and non-human actors (Poverty Data) creates major obstacles for essential poverty alleviation programs including Non-Cash Food Assistance and the Family Hope Program. The main obstacles that emerged during the study included strong sectoral egos, uncoordinated and non-unified data systems and unclear data management transparency practices. According to ANT "translation" analysis the network faces important challenges at interest and enrollment stages which prevent successful mobilization. The research reveals two potential trust-building approaches through the productive training provided by Baznas and the local Lapad Ruhama initiative, but success depends on better coordination and community participation. The research contributes new understanding through its analysis of poverty alleviation networks using ANT while addressing a major theoretical and empirical gap about data governance in Indonesia. This study proposes three practical recommendations to boost poverty alleviation program effectiveness in Garut Regency: data integration improvement, inter-organizational synergy promotion, continuous community empowerment training and enhanced data  verification transparency through community involvement.
The Parenting Patterns of Working Mother’s in Educating Children in Manarang District, Mattiro Bulu Sub-District, Pinrang District Arham, Mutmainnah; Syukur, Muhammad; Irwansyah Idrus, Idham; Najamuddin, Najamuddin
International Journal of Science and Environment (IJSE) Vol. 5 No. 2 (2025): May 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i2.46

Abstract

This study aims to; 1) Analyze the parenting patterns of working mothers in educating their children in Manarang Subdistrict, Mattiro Bulu District, Pinrang Regency. 2) Analyze the factors influencing working mothers in choosing parenting patterns in educating their children in Manarang Subdistrict, Mattiro Bulu District, Pinrang Regency. 3) Analyze the impact of the parenting patterns of working mothers in educating their children in Manarang Subdistrict, Mattiro Bulu District, Pinrang Regency. The approach used is descriptive with a qualitative research type. Data collection was carried out through observation, interviews, and documentation. The informants consisted of working mothers and children whose mothers work, totaling 19 individuals selected using purposive sampling. The criteria for informants included mothers who perform dual roles as both caregivers and workers, and children whose mothers are employed. The data analysis technique consisted of three stages: data condensation, data display, and conclusion drawing. The research findings show that: 1) The parenting patterns of working mothers in Manarang Subdistrict vary, with mothers applying democratic parenting and mixed parenting styles. 2) Factors influencing the choice of parenting patterns among working mothers in Manarang include: a) Personality factors, b) Age factors, c) Educational background, and d) The parenting style received by the parents themselves. The impacts of working mothers’ parenting on child education in Manarang include: a) The child’s character is influenced both positively and negatively, b) Children’s learning motivation ranges from moderate to high.

Page 7 of 22 | Total Record : 213

 5   6   7   8   9 

Filter by Year

2021 2025


Reset
Filter By Issues
All Issue Vol. 5 No. 4 (2025): November 2025 Vol. 5 No. 3 (2025): August 2025 Vol. 5 No. 2 (2025): May 2025 Vol. 5 No. 1 (2025): February 2025 Vol. 4 No. 4 (2024): November 2024 Vol. 4 No. 3 (2024): August 2024 Vol. 4 No. 2 (2024): May 2024 Vol. 4 No. 1 (2024): February 2024 Vol. 3 No. 4 (2023): November 2023 Vol. 3 No. 3 (2023): August 2023 Vol. 3 No. 2 (2023): May 2023 Vol. 3 No. 1 (2023): February 2023 Vol. 2 No. 4 (2022): November 2022 Vol. 2 No. 3 (2022): August 2022 Vol. 2 No. 2 (2022): May 2022 Vol. 2 No. 1 (2022): February 2022 Vol. 1 No. 1 (2021): November 2021 More Issue