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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 535 Documents
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Pengaruh Penambahan Variasi Fraksi Massa Serbuk Cangkang Kelapa Sawit (PKS) pada Sifat Mekanis Komposit Hibrid Fiberglass–Epoxy Vina Nanda Garjati; Rizkia, Vika; Purnama, Dewin; Rahmiati, Tia; Shomami, Amalina
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.v5i2.7924

Abstract

The demand for renewable energy sources in Indonesia continues to rise in line with national energy transition efforts. Wind energy represents a significant but underutilized potential, yet its development is hampered by high investment costs, particularly in manufacturing wind turbine blades that rely on expensive composite materials. This research aims to identify more economical and sustainable material alternatives without compromising the necessary mechanical strength. Hybrid composites were developed by combining fiberglass and palm kernel shell (PKS) powder as reinforcement within an epoxy matrix. Variations of PKS addition were set at 12 wt.%, 20 wt.%, and 24 wt.%. Flexural test results indicated that PKS addition significantly influenced flexural strength, with the highest value (169.67 MPa) observed in specimen A3 (12 wt.% PKS) and the lowest (58.74 MPa) in specimen A1 (24 wt.% PKS). Shore D hardness testing revealed a complex trend: specimen A4 (30% fiberglass) exhibited the highest hardness, whereas specimen A2 showed the lowest. These findings underscore the importance of balancing fiberglass and PKS proportions to achieve optimal and sustainable mechanical performance.
Pengaruh Variasi Suhu pada Rotary Dryer terhadap Karakteristik Pengeringan Biji Kopi Rudy Sutanto; I Gede Bawa Susana
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.v5i2.7934

Abstract

The use of a rotary dryer in the coffee bean drying process offers advantages in heating homogeneity and increased contact between the material and the drying medium. This study aims to analyze the effect of variations in the rotary dryer operating temperature on the drying characteristics of coffee beans in terms of changes in mass, moisture content, and drying rate. Experimental testing was conducted using four temperature levels, namely 40 °C, 50 °C, 60 °C, and 70 °C. The drying process lasted for 360 minutes with data collection intervals every 30 minutes to monitor the dynamics of moisture content reduction as a function of time. The results showed that increasing the rotary dryer operating temperature significantly accelerated the process of reducing the mass and moisture content of coffee beans. At a temperature of 70 °C, the rate of moisture reduction occurred the fastest compared to other temperature variations, while at a temperature of 40 °C the process was slower and tended to be stable. The drying rate showed a maximum value in the initial stage of drying, then decreased gradually as the moisture content in the material decreased. This phenomenon indicates a transition in the mass transfer mechanism from the dominance of free water evaporation to a slower internal moisture diffusion. Overall, temperature variations in rotary dryers significantly impact the drying dynamics of coffee beans. Determining the correct operating temperature is crucial for achieving optimal process efficiency while minimizing potential changes in material quality during drying.
Sustainable Biomass-Derived Cellulose/HKUST-1 Composite from Purun (Lepironia articulata): Synthesis and FTIR Characterization Siti Unvaresi Misonia Beladona; Fiqih, Irvan Maulana; Zahra, Laila; Arum, Diah Panjar; Ripai, Achmad
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.v5i2.7948

Abstract

This study explores the fabrication of a cellulose/HKUST-1 composite derived from purun (Lepironia articulata), a wetland biomass abundant in cellulose and promising as an eco-friendly feedstock for advanced materials. HKUST‑1, a copper-based metal-organic framework known for its high porosity, suffers from reduced stability in humid environments. To address this limitation, a composite integrating purun-derived cellulose with HKUST‑1 was synthesized and subsequently characterized using Fourier Transform Infrared (FTIR) spectroscopy. Cellulose was isolated via alkaline delignification and peroxide bleaching with a yield of 26.68%. HKUST-1 was synthesized using a solvothermal method, producing a turquoise-blue material with a yield of 70.96%. The composite was prepared using an ex-situ method, resulting in a green-colored product with a yield of 85.90%. FTIR analysis confirmed HKUST-1 formation through the disappearance of the C=O band (~1719 cm⁻¹) and the appearance of COO⁻ bands (~1560-1600 and ~1450 cm⁻¹), along with Cu-O vibration (~725 cm⁻¹). FTIR analysis of the composite revealed the presence of diagnostic peaks attributable to both cellulose and HKUST‑1, confirming successful incorporation without compromising structural integrity. Notably, the O‑H stretching band appeared broadened and slightly shifted, indicating hydrogen-bond interactions between cellulose and HKUST-1. These results demonstrate that purun-derived cellulose is a sustainable matrix for HKUST-1 with potential in adsorption applications.
Penentuan Konsentrasi Parasetamol Menggunakan Sensor Elektrokimia Platina (Pt) dengan Teknik Voltametri Siklik Dwi Hermayantiningsih; Nafisah, Zahrotun; Pratika, Remi Ayu
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.v5i2.7955

Abstract

The aim of this study was to determine the concentration of paracetamol in tablet formulations using cyclic voltammetry, with a platinum electrode serving as both the working electrode (WE) and the counter electrode (CE), and Ag/AgCl as the reference electrode (RE). Cyclic voltammetry measurements for paracetamol analysis were carried out within a potential range of 0 to 1.5 V with a constant scan rate of 100 mV/s and 0.1 M H₂SO₄ as the electrolyte. The resulting voltammogram profile showed a clear and sharp anodic peak in the potential range of approximately 0.6–1.4 V, indicating the oxidation of the phenolic group present in the paracetamol (C₈H₉NO₂) forming N-acetyl-p-benzoquinone imine (NAPQI) via an electron transfer mechanism on the surface of the platinum working electrode, which functions as the detection sensor. A standard calibration curve was constructed based on the relationship between the concentration of the paracetamol standard solution and the anodic peak current (IA). The linear regression equation obtained is y = 2 × 10-7x + 3 × 10-6. Substituting the sample anode current value into this equation and taking into account a dilution factor of 5, the sample concentration is found to be 1950 ppm. Taking into account the sample volume of 25 mL, sample mass of 500 mg, and tablet mass of 4000 mg, the concentration of paracetamol in a single tablet is calculated to be 390 ppm (equivalent to 390 mg/L).
Analisis Komparatif Sensitivitas Metode Mekanistik-Empiris dan Empiris dalam Penentuan Ketebalan Perkerasan Kaku Lalu Lintas Berat Irvan Efendi; Kurnia Hadi Putra; Ratih Sekartadji; Theresia Maria C.A.
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.v5i2.7963

Abstract

This study analyzes the design of rigid pavement thickness on the Dawarblandong road segment using four planning methods: MDPJ 2024, MDPJ 2017, Pd T-14-2003, and AASHTO 1993. Traffic load data and subgrade soil conditions were used to calculate the concrete slab thickness and foundation layers according to each method’s procedure. The results show that the MDPJ 2024 and MDPJ 2017 methods yield concrete slab thicknesses of approximately 305–310 mm using a mechanistic-empirical approach and cumulative traffic load values, while the Pd T-14-2003 and AASHTO 1993 methods produce thinner slabs of 175 mm and 210 mm, respectively, using simpler empirical approaches. These differences indicate that methods incorporating mechanistic analysis of fatigue and erosion damage provide more conservative and safer designs. Reinforcement configuration and slab dimensions are relatively consistent across all methods, though foundation layer thickness and damage control differ. The findings can serve as a reference for selecting concrete pavement design methods that align with traffic conditions and structural safety requirements. Further research is recommended to evaluate field performance and develop integrated design methods.
Pengaruh Subtitusi Tepung Daun Kelor (Moringa Oleifera) terhadap Kadar Zat Besi dan Vitamin C Crackers Devina Kemala Pratidina; Sudrajah Warajati Kisnawaty; Pramudya Kurnia
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.v5i2.7967

Abstract

An increase up to 50% in blood volume during pregnancy leads to a heightened demand for vitamin C and iron, which are essential for supporting erythrocyte formation and facilitating iron absorption. One plant rich in vitamins A, B, C, and bioavailable iron is Moringa leaves. Moringa leaf flour can be utilized as a substitute ingredient in various food products, including crackers. This study was conducted to examine the effect of substituting Moringa oleifera leaf flour on the iron and vitamin C content of cracker products. An experimental research design was employed using a Completely Randomized Design (CRD) with four substitution levels. Analytical methods were carried out using ICP-OES and HPLC for iron and vitamin C content. The Kruskal-Wallis test and the Mann-Whitney test were utilized to analyze the data obtained from the study. The results indicate that the incorporation of Moringa leaf flour has a significant effect on the iron and vitamin C content of crackers (p ≤ 0.05). Iron content increased at 10% and 15% substitution levels, then decreased at 20% substitution. Vitamin C content decreased as moringa leaf flour substitution increased, from 0.44 mg at 0% substitution to 0.16 mg at 20% substitution. The decrease in vitamin C content was due to high-temperature baking, which caused damage, and exposure to oxygen during molding, triggering oxidation. The iron and vitamin C content in the cracker products was significantly influenced by the substitution of moringa leaf flour.
Pengaruh Substitusi Tepung Daun Kelor (Moringa Oleifera) terhadap Kadar Serat Pangan Total Produk Crackers Afa Risda Ziana Putri; Sudrajah Warajati Kisnawaty; Pramudya Kurnia
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.v5i2.7969

Abstract

Nutritional issues in toddlers in Indonesia are still a focus, as evidenced by the high prevalence of malnutrition. The production of snack crackers made from Moringa oleifera leaf flour has the potential as an option to support fiber sufficiency and digestive system health in children. The present inquiry seeks to analyze the impact of Moringa leaf flour substitution on the content of total dietary fiber, water-soluble fiber, and water-insoluble fiber in cracker products. Experimental research involving four treatments of Moringa leaf flour substitution with two replications Fiber content analysis was executed using the enzymatic gravimetric method AOAC 991.43 standard and the data were subsequently analyzed using the One Way ANOVA test which was then followed by the Duncan Multiple Range Test (DMRT). There is an effect of Moringa leaf flour substitution on total dietary fiber, soluble fiber, and insoluble fiber with a p value of 0,000 (p <0.05). The content of total dietary fiber, water-soluble fiber, and water-insoluble fiber in treatment A (0%) was 4,18; 0,28; and 3,90 gr/100 gr, treatment B (10%) was 6,66; 0,50; and 6,17 gr/100 gr, treatment C (15%) was 8,21; 0,55; and 7,66 gr/100 gr, and treatment D (20%) was 10,14; 0,68; and 9,45 gr/100 gr. The 10%, 15%, and 20% formulations contain high fiber because they have more than 6 g of dietary fiber per 100 gr of product and can help meet children's daily fiber needs and support improving nutritional status in children with underweight.
Pengaruh Beban Operasi terhadap Nilai Net Plant Heat Rate (NPHR) pada Pembangkit Listrik Tenaga Uap Herlin Sumarna; Ramadhoni, Tri Satya; Septano, Gurruh Dwi; Purfaji, Purfaji; Okviyanto, Toni
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.v5i2.7977

Abstract

This study aims to analyze the effect of variations in operating load on the Net Plant Heat Rate (NPHR) at a 3×10 MW coal-fired power plant. The independent variables examined are the generator operating loads at 50%, 75%, and 100%, while the dependent variable is the NPHR value. The research data consists of 30 samples distributed proportionally across each load level. Data analysis was performed using a one-way Analysis of Variance (ANOVA) to test the significance of differences in the mean NPHR values across the operating load variations. The results indicate that variations in operating load significantly affect the NPHR value (p-value < 0.05). The highest average NPHR value was obtained at 50% load at 4160 kcal/kWh, then decreased at 75% load to 3861 kcal/kWh, and reached the lowest value at 100% load at 3625 kcal/kWh. These results indicate that an increase in operating load correlates with a decrease in the NPHR value and an increase in the plant’s thermal efficiency. Thus, operating the coal-fired power plant under conditions approaching optimal design capacity can improve fuel efficiency and support the optimization of the plant’s operational performance.
Pengaruh Penambahan Selulosa Kulit Nipah (Nypa fruticans) terhadap Karakteristik Smart Packaging Berbasis Pati – Kitosan Nina Hartati; Andriani, Tiara; Kurniawan, Edi; Sumarna, Herlin
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.v5i2.7978

Abstract

The development of environmentally friendly packaging materials with the ability to monitor food quality has become an important focus in biomass-based innovations. This study aims to develop bioplastic films based on durian seed starch–chitosan reinforced with cellulose from nipa palm husk and functionalized as smart packaging by incorporating Coleus scutellarioides (miana) extract as a natural indicator. The films were prepared using the solution casting method with varying starch-to-chitosan ratios (2:8, 4:6, 6:4, and 8:2) and cellulose additions (1 g, 3 g, and 5 g). Characterization included tensile strength, elongation at break, Young’s modulus, Water Vapor Permeability (WVP), Water Vapor Transmission Rate (WVTR), and sensitivity to meat quality. The results showed that the highest tensile strength (10.718 MPa) was obtained at the 2:8 ratio with 1 g cellulose, while the highest elongation (3.49%) was observed at the 8:2 ratio. The maximum Young’s modulus (9.40 MPa) was achieved at the 4:6 ratio with 1 g cellulose. The lowest WVP and WVTR values were found at the 6:4 ratio with 3 g cellulose, indicating improved barrier properties. The anthocyanins in miana extract exhibited a clear color response to pH changes, with prolonged storage leading to a shift toward acidic conditions. Overall, the optimal addition of cellulose enhanced mechanical and barrier properties, whereas excessive amounts led to agglomeration and reduced performance. These findings demonstrate the potential of combining durian seed starch, chitosan, cellulose, and miana extract as a biodegradable smart packaging material.
Analisis Kadar Gula Total dan Kekerasan pada Produk Crackers Substitusi Tepung Daun Kelor (Moringa Oleifera) Inasan Lulu Milatina; Sudrajah Warajati Kisnawaty; Aan Sofyan
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.v5i2.7988

Abstract

Introduction: Moringa oleifera leaves are one of the local plants that contain high nutrition and have the potential to be used as a fortification ingredient for food products. The purpose of this study was to analyze the effect of moringa leaf flour substitution on the total sugar content and hardness of crackers as an effort to develop food based on local ingredients. Method: The experimental method was applied in this study with a Completely Randomized Design (CRD) containing four treatments of moringa leaf flour substitution. Testing of total sugar content and hardness used the Nelson-Somogyi method and Texture Analyzer. Data analysis used the Kruskal Wallis test. Results: The findings showed that moringa leaf flour substitution significantly affected the total sugar content and hardness of crackers (p≤0.05). The total sugar content increased with increasing substitution from 17.23% in 0% treatment to 18.73% in 20% substitution, while the hardness value increased at 10% substitution (15.09 N) then decreased at 15% substitution (12.92 N) and 20% (10.01 N). These findings indicate that changes in flour composition affect the chemical and physical properties of the product and there is an influence between total sugar content and hardness in determining the physical quality of crackers. Conclusion: The addition of moringa leaf flour has been proven to affect the characteristics of crackers so that the material formulation needs to be optimized to produce products with good quality.

Page 53 of 54 | Total Record : 535

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