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Angelia Putriana
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INDONESIA
Jurnal Sains dan Teknologi
Published by Yayasan Literasi Sains Indonesia
ISSN : 28284992     EISSN : 28284984     DOI : https://doi.org/10.55123/insologi
Core Subject : Health, Science, Education, Agriculture, Engineering,
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary
INSOLOGI (Jurnal Sains dan Teknologi) diterbitkan 6 (enam) kali dalam setahun, yaitu pada bulan Februari, April, Juni, Agustus, Oktober dan Desember oleh Yayasan Literasi Sains Indonesia. Jurnal INSOLOGI adalah jurnal yang dapat diakses secara terbuka bagi para Peneliti, Dosen dan Mahasiswa yang ingin mempublikasikan hasil penelitiannya pada bidang ilmu sains dan teknologi. Jurnal INSOLOGI juga merupakan wadah informasi berupa hasil penelitian, studi kepustakaan, gagasan, aplikasi teori dan kajian analisis kritis dibidang perkembangan sains dan teknologi yang meliputi bidang ilmu pengetahuan alam (biologi, kimia, dan fisika), matematika dan statistik, perikanan/kelautan, kesehatan dan farmasetika, pertanian (agribisnis dan agroteknologi), keteknikan (teknik sipil, mesin, arsitektur, lingkungan, dan pertambangan), pengembangan/desain miniatur/rancang bangun dan bidang ilmu lainnya yang relevan dengan penelitian sains dan teknologi.
Arjuna Subject : Matematika - Matematika Terapan
Articles 536 Documents
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Kajian Kinerja Simpang Tak Bersinyal di Kawasan Universitas Iskandar Muda Berdasarkan Karakteristik Arus Lalu Lintas Febrina Dian Kurniasari; Alfisyahrin Alfisyahrin; Marini Bravikawati; Tjut Rizqi Maysyarah Hadi; Michel Kasaf
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 2 (2026): April 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i2.7998

Abstract

Unsignalized intersections often become critical points of traffic problems due to increasing traffic volume that is not balanced with intersection capacity, resulting in delays, queues, and potential conflicts, especially during peak hours. This condition also occurs at the Unida Intersection (Universitas Iskandarmuda) in Banda Aceh, which serves traffic movements from campus areas, residential zones, and surrounding commercial activities. This study aims to analyze traffic flow characteristics and intersection performance using the Indonesian Highway Capacity Guidelines (PKJI 2023). The data used include traffic volume and geometric conditions of the intersection, which are then analyzed based on parameters such as capacity, degree of saturation, delay, queue probability, and level of service. The results show that the highest traffic volume occurs during the afternoon peak hour, reaching 1,089 pcu/hour, with a degree of saturation of 0.65. The average intersection delay is 12.989 seconds per vehicle, with a queue probability ranging from 17.47% to 36.09%. The level of service is classified as C, indicating that traffic flow remains stable but begins to be affected by congestion. Overall, the intersection still operates adequately however, further evaluation is needed to anticipate future increases in traffic volume.
Analisis Tegangan dan Kegagalan Yoke Propeller Shaft Truk Angkutan Sawit Menggunakan Metode Elemen Hingga Tri Satya Ramadhoni; Herlin Sumarna; Toni Okviyanto; Purfaji Purfaji; Rachmat Dwi Sampurno
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 2 (2026): April 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i2.8001

Abstract

Failure of slip yoke components in palm oil transport vehicle transmission systems is generally caused by complex and cyclic dynamic loading. This study aims to analyze stress distribution and predict failure locations using a Metode Elemen Hingga (FEM)-based approach. A three-dimensional model was developed from actual geometry with controlled simplification using AISI 4140 material. Mesh convergence and quality evaluation were conducted to ensure numerical reliability. The results show that maximum stress increases with load, reaching 196.14 MPa, 294.38 MPa, 392,40 MPa, and 490.52 MPa for loads of 4, 6, 8, and 10 tons, respectively. At 10 tons, the stress exceeds the material yield strength (415 MPa), indicating plastic deformation. Stress concentration occurs at the critical section (C–C) due to geometric discontinuities and combined loading, consistent with observed failure locations. Comparison with analytical results shows less than 1% deviation, confirming model accuracy. This study demonstrates that FEM effectively predicts stress distribution and failure mechanisms, providing a basis for design optimization and maintenance strategies.
Hubungan Ketahanan Pangan Keluarga dengan Asupan Karbohidrat pada Wanita Usia Subur di Kecamatan Selo, Boyolali Hilda Deliana; Luluk Ria Rakhma; Listyani Hidayati
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 2 (2026): April 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i2.8026

Abstract

Household food security is an important factor influencing nutrient intake, including carbohydrate intake as the main source of energy. This study aimed to determine the relationship between household food security and carbohydrate intake among women of reproductive age in Selo District, Boyolali. This research used an analytic observational design with a cross-sectional approach involving 108 respondents selected using simple random sampling. Household food security was measured using the Household Food Insecurity Access Scale (HFIAS), while carbohydrate intake was assessed using a Semi Quantitative Food Frequency Questionnaire (SQ-FFQ). Data were analyzed using the Spearman Rank test. The results showed that the majority of respondents were classified as food insecure (59.3%), with carbohydrate intake predominantly in the excessive (46.3%) and normal (38.9%) categories. Statistical analysis revealed a significant relationship between household food security and carbohydrate intake (p = 0.030) with a weak negative correlation (r = -0.209). It can be concluded that higher levels of food insecurity are associated with lower carbohydrate intake.
Teknik Mordanting Ekstrak Kulit dan Biji Terong Belanda (Solanum betaceum Cav.) sebagai Pewarna Alami Tekstil Melantina Oktriyanti; Idha Silviyati; Nyayu Febrina Nuraini
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 2 (2026): April 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i2.8070

Abstract

The peel and seeds of tamarillo (Solanum betaceum Cav.) are sources of anthocyanin pigments with potential application as natural dyes for a more environmentally friendly textile industry. The widespread use of synthetic dyes, which still dominates today, poses negative impacts on both the environment and human health. Therefore, this study was conducted to evaluate the quality of the resulting extracts. The parameters assessed included acidity level (pH), anthocyanin content based on UV-VIS absorbance values, color characteristics, and color fastness in accordance with the SNI ISO 105-A03:2010 standard. The results showed that the duration of maceration had a significant effect on the quality of the extracts. For the peel extract, the optimal condition was obtained at pH 3, with an anthocyanin content of 65.12 mg/L, an absorbance value of 0.391, and color fastness at a scale of 4–5, which is categorized as very good. Meanwhile, the seed extract exhibited optimal results at pH 3, with an anthocyanin content of 127.07 mg/L, an absorbance value of 0.761, and color fastness at a scale of 4, which falls under the good category. Overall, these findings indicate that tamarillo peel and seeds have significant potential as a sustainable source of natural textile dyes and can serve as a safer alternative to synthetic dyes.
Peningkatan Efisiensi Produksi Briket Batok Kelapa Menggunakan Mesin Cetak Kapasitas 10kg Baiti Hidayati; M. Rasid; Herlin Sumarna; Romli Romli; Aji Pangestu Wijaya
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 2 (2026): April 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i2.8091

Abstract

Manual production of coconut shell briquettes in small and medium-scale industries often faces limitations in productivity, product uniformity, and dependence on human labor. This study aimed to evaluate the efficiency improvement of coconut shell briquette production through the use of a 10 kg-capacity briquetting machine. An experimental method was applied by comparing mechanical briquetting and manual hand-pressing using the same raw material composition, namely 7 kg of coconut shell charcoal powder, 3 kg of tapioca starch adhesive, and 1 liter of water as a mixing aid. The observed parameters included production capacity, production time, physical quality score, quality consistency, and electrical energy consumption. The results showed that the machine produced 10 kg of briquettes in 1 hour, whereas the manual method produced approximately 3.3 kg per hour and required about 3 hours to reach the same production quantity. The machine increased production capacity by approximately 200% and reduced production time by approximately 67%. The physical quality score increased from 70% to 85%, while quality consistency increased from 80% to 95%. Although the machine consumed 0.5 kWh per process, the energy requirement was relatively low, equivalent to 0.05 kWh/kg of briquettes. These findings indicate that the 10 kg-capacity briquetting machine is feasible as an appropriate technology to improve productivity and product uniformity for small and medium-scale coconut shell briquette producers.
Prediksi Potensi Daya Listrik PLTGL-OWC di Selat Makassar Menggunakan Metode Gradient Boosted Tree-Regression (GBT) Adellia Juni Astine; Dian Candra Rini Novitasari; Ratna Cintya Dewi
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 2 (2026): April 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i2.7917

Abstract

The increasing demand for electricity continuously emphasizes the importance of developing renewable energy sources. Indonesia, as a country consisting of many islands, has significant potential to utilize energy from ocean waves, one of which is by using Oscillating Water Column (OWC) technology that can convert wave energy into electrical energy. The purpose of this study is to estimate the electrical energy generated by the OWC type Ocean Wave Power Plant (PLTGL) in the Makassar Strait using the Gradient Boosted Tree Regression (GBT) method. Two approach schemes are used in this study, but the focus of the discussion is on the first scheme, namely the indirect approach. In this approach, predictions are first made on four main variables, namely significant wave variables (Hsig), maximum wave height (Hmax), wave period (wave period), and wind speed (wind speed). The results of the main variable predictions are then used to calculate the electrical power generated by the PLTGL-OWC. The maximum power is estimated to be 23,926 Watts on January 3, 2025 at 12:00, and the minimum power is 3,256 Watts on January 7, 2025 at 19:00. This approach is effective for predicting the power output of ocean wave generators in the Makassar Strait.

Page 54 of 54 | Total Record : 536

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