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Jurnal Sains dan Teknologi
Published by Global Scients Publisher
ISSN : -     EISSN : 30639980     DOI : https://doi.org/10.62379/jsit
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemistry Civil Engineering, Building, Construction & Architecture Physics Transportation
Jurnal Sains dan Teknologi adalah jurnal yang diterbitkan oleh Global Scients Publisher dengan Nomor ISSN : 3063-9980 (Online - Elektronik) dengan yang bertujuan untuk mewadahi penelitian di bidang Sains dan Teknologi. Jurnal Sains dan Teknologi merupakan wadah informasi berupa hasil penelitian, studi kepustakaan, gagasan, aplikasi teori dan kajian analisis kritis dibidang Penelitian,
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 142 Documents
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Tinjauan Literatur: Perkembangan Water Based Coolant Beraditif Mxene, Carboxymethyl Cellulose, dan Span 60 Untuk Proses Pembubutan Baja AISI 1045 Menggunakan Pahat Karbida Berlapis A LITERATURE REVIEW: DEVELOPMENT OF MXENE, CARBOXYMETHYL CELLULOSE, AND SP Dikki Yumarsa
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
Publisher : GLOBAL SCIENTS PUBLISHER

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Abstract

Cutting fluid plays a vital role in conventional machining processes, particularly in controlling heat, friction, and tool wear during turning operations. The machining industry's continued reliance on oil-based coolants raises several concerns, including high operational costs, adverse health effects on operators, and environmental pollution from non-biodegradable waste. Water-Based Coolant (WBC) has emerged as a more environmentally friendly alternative, although its cooling and lubrication performance still requires enhancement through functional additives. This article presents a systematic literature review on the development of additive-based WBC formulated with MXene as a superior thermal conductor, Carboxymethyl Cellulose (CMC) as a thickening and stabilizing agent, and Span 60 as a nonionic emulsifier, particularly in the context of turning AISI 1045 steel using coated carbide cutting tools. Through the review and synthesis of eighteen references, this study maps the working mechanisms of each additive, the empirical findings of previous studies on surface roughness and tool wear, and the research gap that underlies the need for further experimental investigation under a Minimum Quantity Lubrication (MQL) system. This review is expected to serve as a conceptual and empirical foundation for experimental research on additive WBC formulations as an efficient, economical, and sustainable cooling solution.
Analisis Slump dengan Penambahan Serat Eceng Gondok (1%,2%, 4%) Wizdan Adani; Mitsaq Addina Nisa
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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Abstract

The mechanical characteristics of concrete—which is strong in compression but weak in tension—pose a major obstacle to structural ductility. The use of natural water hyacinth (Eichhornia crassipes) fibers as a waste product offers an ecological solution to reduce the use of expensive and environmentally unfriendly synthetic fibers. This study aims to analyze the effects of adding water hyacinth fibers on the mechanical properties of concrete, to compare its compressive and flexural strength with that of ordinary concrete, and to determine the optimal fiber content. The research method involved laboratory experiments using fiber content variations of 0%, 1%, 2%, and 4% of the cement weight, with uniform fiber lengths of 3 cm that had been soaked in a NaOH solution for 8 hours and supplemented with a superplasticizer. The parameters tested included the slump value and the density of fresh concrete, the compressive strength of cylindrical specimens at 7, 14, and 28 days, and the flexural tensile strength of beams at 14 and 28 days. The fresh concrete test results showed that the slump value was directly proportional to the fiber content, ranging from 14 cm (0%) to 16 cm (4%) due to the effect of the superplasticizer. In the mechanical property tests of 28-day-old hardened concrete, the average compressive strength decreased as the fiber content increased, namely 27.01 MPa (0%), 16.83 MPa (1%), 9.88 MPa (2%), and 8.11 MPa (4%). This decrease is due to the tendency of organic fibers to clump together, resulting in a less homogeneous concrete mixture. Conversely, the 28-day flexural strength test showed an increase in the initial variations before eventually dropping sharply, with average values of 1.27 MPa (0%) and 1.31 MPa (1%), reaching an optimal point at the 2% variation of 1.37 MPa, and dropping to 1.03 MPa at the 4% variation. Based on the evaluation, the addition of water hyacinth fiber effectively improves the flexural strength of concrete within an optimal variation range of 2%, but has a negative impact on its compressive strength.
Perancangan dan Simulasi Sistem Kendali Destilasi Air Laut Berbasis ESP32 dengan Sumber Energi Surya dan Bayu Rival Nur Alamsyah
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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Abstract

The clean water supply crisis in coastal areas requires a seawater treatment system that can operate independently and adapt to fluctuations in renewable energy. This study aims to design and verify an ESP32-based seawater distillation control system that utilizes a combination of solar and wind energy. The research method uses an engineering design approach and digital simulation through the Wokwi platform. The system integrates an HC-SR04 ultrasonic sensor for water volume estimation, a DHT22 sensor for temperature reading, a potentiometer to represent changes in solar panel and wind turbine power, a servo motor to represent a pump or valve actuator, an LED as a heater indicator, and a 20x4 LCD as a monitoring interface. The control algorithm uses water level hysteresis at the 10–70 liter range, a safety interlock with a minimum power of 50 W, and heater control with a lower temperature limit of 50°C and an upper temperature limit of 80°C. Simulation results show that the servo moves to the 90° position when the water volume is ≤10 liters and returns to the 0° position when the volume reaches ≥70 liters. The heater is deactivated when the total power is less than 50 W, activated when the temperature is ≤50 °C and the power is sufficient, and turned off when the temperature reaches ≥80 °C. The simulation validates the basic functions of water level control, energy management, and temperature protection according to the designed logic. This system can be the basis for developing a hardware prototype for managing renewable energy-based seawater distillation.
Smart Nutrition for Futsal: Pengaruh Edukasi Digital terhadap Perubahan Perilaku Pola Makan dan Hidrasi Atlet Futsal Usia Dini Putri Amilasari; Oftafiana Elsa; Uyun Aminatuz Zuhria; Tri Shofia Marcellina; Lazuada Nefia Ramahdhani; Avina Khoirunnisa; Davien Yanuar; Mikhail Haq; Rachmad Rifky; Muhammad Ryan Soewito; Muh.Qolbuddin Iqhmatiar; Moch Iqbal Riski
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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Abstract

Optimal nutrition and hydration are crucial factors supporting the growth, health, and performance of young futsal athletes, yet many athletes still exhibit poor eating and hydration behaviors due to limited nutritional knowledge. This study analyzed the effect of a digital nutrition education program on eating and hydration behavior among young futsal athletes at NSM Valafa Academy. A quantitative Pre-Experimental One Group Pretest–Posttest design was used, involving 15 parents/guardians of athletes in the KU-10, KU-13, and KU-16 age groups, selected through total sampling. The intervention consisted of a webinar and a digital poster titled “Isi Piringku Atlet” (My Athlete’s Plate); data were collected via a Google Form questionnaire before and after the intervention. Results showed improved eating and hydration behavior after the program, reflected in breakfast habits, vegetable and fruit consumption, understanding of the Isi Piringku guideline, and drinking habits before and after training. The Wilcoxon Signed-Rank Test showed a significant difference between pre-test and post-test scores (p < 0.05) for both variables. A digital nutrition education program combining webinars and digital posters is therefore an effective, practical, and low-cost strategy for improving eating and hydration behavior among young futsal athletes, and is feasible for implementation as part of a coaching program involving coaches and parents.
Adaptasi dan Tipologi Hotel Maison Wilhelmina di Kawasan Heritage Braga, Bandung Safanisa Aurellia; Fadhia Rahma Aulya
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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Abstract

The Braga area is a historical artifact of colonial architectural development in the city of Bandung. One of the buildings that has undergone a transformation in function is the Maison Wilhelmina Hotel, which now operates as a boutique hotel through a process of adaptive reuse. This study aims to evaluate the extent of the success of this transformation using architectural criticism methods, namely doctrinal criticism and typical criticism. Through doctrinal criticism, the building is assessed based on the principles of preservation and tropical architecture, while typical criticism is used to analyze the building's suitability with modern boutique hotel standards. The results of the analysis show harmony in terms of the facade, but there are internal circulation constraints due to limited land that affects the comfort of private spaces.
Pengaruh Pemberian Konsentrasi Biochar Kayu Meranti Sebagai Media Tanam Terhadap Pertumbuhan Tanaman Tomat (Solanum lycopersicum L.) Normila Santi; Maya Istyadji; Rizky Febriyani Putri
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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Tomato (Solanum lycopersicum L.) productivity is influenced by the quality of the growing medium. Meranti wood biochar has the potential to improve soil properties and support plant growth. This study aimed to analyze the effect of different concentrations of meranti wood biochar on tomato biomass based on plant dry weight and to determine the most effective concentration. The study employed a Completely Randomized Design (CRD) with one factor consisting of five treatments:  (100% soil),  (5% biochar + 95% soil),  (10% biochar + 90% soil),  (15% biochar + 85% soil), and  (20% biochar + 80% soil), with five replications for each treatment. Data were analyzed using normality and homogeneity tests, followed by one-way ANOVA and Duncan's Multiple Range Test (DMRT) at a 5% significance level. The results showed that meranti wood biochar significantly affected tomato biomass (p = 0.003). The  treatment produced the highest dry weight (79.0 g), indicating that the application of 10% meranti wood biochar was the most effective concentration for increasing tomato biomass.
Pembuatan Atmosferic Water Generator (AWG) Skala Mikro dengan Sistem Liquid Pump Two Phase Loop Muhammad Harish; Sentot Novianto; Larasati Rizky Putri; Syakila Syakila
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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Krisis air bersih menjadi salah satu permasalahan global yang terus meningkat akibat perubahan iklim dan pertumbuhan penduduk sehingga diperlukan alternatif penyediaan air yang efisien dan mudah diterapkan. Penelitian ini bertujuan untuk merancang dan menganalisis alat penghasil air skala mikro berbasis proses kondensasi udara menggunakan sistem refrigerasi sebagai solusi pemenuhan kebutuhan air pada lingkungan dengan tingkat kelembapan menengah hingga tinggi. Metode penelitian yang digunakan adalah metode eksperimen dengan memvariasikan kecepatan aliran udara sebesar 2,2 m/s, 1,6 m/s, dan 1,1 m/s, kemudian mengukur temperatur, kelembapan relatif, titik embun, serta laju kondensasi yang dihasilkan. Hasil penelitian menunjukkan alat berhasil menghasilkan air melalui proses kondensasi, dengan variasi kecepatan aliran udara memengaruhi laju pengembunan, di mana kecepatan aliran udara yang lebih tinggi menghasilkan laju kondensasi yang lebih besar dibandingkan kecepatan yang lebih rendah.
Implementasi Sensor Cahaya dan Regulator Switching Buck Boost Sebagai Pengatur Tegangan Lampu untuk Meningkatkan Efesiensi Kelitrikan Honda Revo Adit Nugraha; Medi Yuwono Tharam
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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The motorcycle lighting system often experiences voltage fluctuations due to changes in engine speed and electrical load, which can reduce LED lamp performance and lifespan. This study designs and implements a voltage monitoring and protection system for the Honda Revo using an ESP32 microcontroller, a buck-boost switching regulator, and an LDR sensor. The system monitors voltage in real time and stabilizes the lamp output at 12 V, while automatically disconnecting the power when voltage exceeds 13 V. The LDR sensor adjusts lamp brightness based on ambient light intensity to improve efficiency. Testing shows the rectifier output ranges from 13.2 V to 14.4 V during operation. The buck-boost converter successfully maintains a stable 12 V output despite input fluctuations. Overall, the system effectively enhances voltage stability, safety, and electrical efficiency, while supporting longer LED lamp lifetime.
Implementasi Infrastruktur Hijau (Green Infrastruktur) pada Sektor Transportasi di Sumatera Barat Wiwin Putri Zayu; Barkhia Yunas
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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Sektor transportasi darat di Provinsi Sumatera Barat sangat rentan terhadap bencana tanah longsor akibat topografi perbukitan curam dan curah hujan ekstrem. Pendekatan mitigasi konvensional berbasis semen dan beton (grey infrastructure) terbukti membutuhkan biaya tinggi dan kurang adaptif terhadap pergeseran tanah jangka panjang. Penelitian ini bertujuan untuk merumuskan strategi implementasi green infrastructure pada bidang transportasi di Sumatera Barat melalui pendekatan rekayasa hayati (bio-engineering) penahan longsor alami. Metode yang digunakan adalah studi literatur (literature review) dengan menganalisis dan menyintesis data sekunder dari artikel ilmiah, dokumen kebijakan, serta laporan teknis kebencanaan dalam kurun waktu sepuluh tahun terakhir. Hasil kajian menunjukkan bahwa penggunaan kombinasi vegetasi lokal memiliki efektivitas tinggi dalam menjaga stabilitas lereng jalan. Rumput Vetiver (Chrysopogon zizanioides) efektif menahan erosi permukaan dan longsor dangkal melalui jaringan akar serabut padat berdaya tarik tinggi hingga kedalaman 5 meter. Sementara itu, bambu lokal dan pohon Suren (Toona sureni) berfungsi sebagai pasak hidup alami (living soil nails) untuk mengunci massa tanah lateral pada kaki lereng. Fase kritis awal pertumbuhan tanaman (6–18 bulan) dapat diatasi melalui metode hibrida menggunakan jaring sabut kelapa (cocomesh). Penelitian ini merekomendasikan pembentukan petunjuk teknis daerah yang mengintegrasikan aspek agronomi ke dalam perencanaan jalan hijau oleh Balai Pelaksanaan Jalan Nasional (BPJN) Sumatera Barat demi mewujudkan konektivitas infrastruktur yang tangguh bencana dan berkelanjutan.
Analisis Sifat Mekanik Beton Core Drill dan Beton Laboratorium dengan Kondisi Terawat dan Terganggu Aktivitas Manusia Theresia Carmel Sijabat; Anisa Prita Melinda
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
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Industri konstruksi merupakan salah satu sektor strategis yang memiliki kontribusi signifikan terhadap pertumbuhan ekonomi nasional dan pembangunan infrastruktur suatu negara. Dalam konteks konstruksi, mutu beton fc' 22.5 MPa (setara dengan K-275) merupakan salah satu spesifikasi yang sangat umum digunakan untuk elemen balok, kolom, dan pelat. Namun, variasi pelaksanaan di lapangan memiliki pengaruh signifikan terhadap pencapaian kuat tekan. Ketidakkonsistenan dalam pencampuran, pemadatan, maupun perawatan beton dapat menyebabkan kuat tekan aktual lebih rendah dibandingkan mutu rencana. Salah satu trend terkini untuk memastikan kualitas campuran beton, biasanya menggunakan beton ready mix yang telah terjamin kualitasnya. Dalam penelitian akan dikaji pengaruh gangguan aktivitas manusia terhadap kuat tekan beton dengan menganalisis dua kondisi yaitu terawat yang dengan di curing sesuai standar untuk sampel laboratorium dan diuji pada umur 7,14, dan 28 hari yang menggunakan beton ready mix dalam pelaksanaannya. Kemudian, sampel lapangan yang diambil menggunakan metode core drill dengan dua perlakuan yaitu terawat dan terganggu aktivitas manusia yang akan diuji pada umur 28 hari. Hasilnya akan dianalisis antara sampel laboratorium dan lapangan, yang akan menjadi kajian literatur dalam pengambilan keputusan saat pembuatan beton di lapangan.

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