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Jurnal Sains Teknologi dan Lingkungan (JSTL)
Published by Universitas Mataram
ISSN : 24770329     EISSN : 24770310     DOI : -
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Computer Science & IT Public Health
Jurnal Sains Teknologi dan Lingkungan (JSTL), merupakan media untuk publikasi tulisan asli yang berkaitan dengan sains teknologi dan lingkungan baik dalam Bahasa Indonesia maupun Bahasa Inggris. Jurnal Sains Teknologi dan Lingkungan (JSTL) merupakan jurnal ilmiah terbitan berkala dua kali setahun (Juni dan Desember).
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Articles 335 Documents
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Klasifikasi Multiclass Pada Sound Healing menggunakan Algoritma Pseudo Neareset Neighbor Ramadhani, Cipta; Made Budi Suksmadana , I; Yadnya, Made Sutha
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 4 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i4.751

Abstract

Sound healing, or commonly referred to as music therapy using Acoustic Sound for Wellbeing (ASW) equipment such as drums, gongs, bells, and other types that produce specific frequency vibrations, is used in the medical field to help patients experiencing anxiety or depression. Currently, research on sound healing focuses on methods to identify appropriate frequencies that influence stress and anxiety experienced by patients. This study presents the implementation of the Pseudo-Nearest Neighbour (P-NN) algorithm for classifying multiclass ASW. In general, the P-NN algorithm performs better for multiclass scenarios, particularly in identifying outlier data in each class. Furthermore, P-NN provides better performance for all confusion matrix parameters. Using two classes (Gong and Singing Bowl), the accuracy of the P-NN algorithm exceeds 92%. This demonstrates that the P-NN algorithm can provide better performance in handling outliers within the ASW dataset.
Studi Awal Perbanyakan Cacao (Theobroma cacao L.) Asal Kebun Rakyat Lombok Utara: Pertumbuhan Bibit pada Media Tanah dengan Pupuk Kandang Sapi Santoso, Bambang Budi; Ngawit, I Ketut; Jayaputra, Jayaputra
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 4 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i4.752

Abstract

Cocoa (Theobroma cacao L.) is an economically valuable crop, especially in the chocolate industry. However, cocoa seedling productivity in Indonesia faces challenges such as low-quality seedlings and suboptimal cultivation practices. This study aimed to evaluate the effect of cow manure on the growth of cocoa seedlings from smallholder farms in North Lombok, focusing on its potential as a sustainable nursery management practice. The experiment was conducted using a randomized complete block design with five treatments involving different ratios of cow manure and standard nursery media (topsoil and sand). Seedling growth parameters such as germination rate, seedling height, stem diameter, leaf number, and biomass accumulation were measured at 30, 60, and 90 days after planting. The results showed significant improvements in all growth parameters with the application of cow manure compared to the control. The best performance was observed at 300 g of cow manure per polybag, resulting in a maximum seedling height of 35.2 cm, 14.2 leaves per seedling, and a dry biomass of 34.7 g. The cow manure enhanced soil fertility, improved water retention, and supported microbial activity, contributing to better seedling vigor. In conclusion, cow manure is a viable organic amendment for cocoa seedling production, especially in resource-constrained farming systems
Kajian Pengaruh Suhu Pemanasan Awal Dan Waktu Sokletasi Terhadap Perolehan Minyak Biji Kelor (Moringa Oleifera Lam.) Handayani, Sri Seno; Gunawan, Erin Ryantin; Suhendra, Dedy; Murniati, Murniati
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 4 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i4.754

Abstract

Sound healing, or commonly referred to as music therapy using Acoustic Sound for Wellbeing (ASW) Moringa seed oil (Moringa oleifera Lam.) has significant potential for use in various industrial sectors, including food, pharmaceuticals, and cosmetics. One of the critical factors influencing oil extraction efficiency is preheating treatment and extraction process duration. This study aims to evaluate the effect of varying preheating temperatures and Soxhlet extraction times on the yield of Moringa seed oil, as well as to determine the most optimal extraction conditions. The extraction process was conducted using the Soxhlet method with n-hexane as the solvent. Preheating temperatures used in this study ranged from room temperature to 50°C, 60°C, and 70°C, with extraction times of 2, 4, and 6 hours. The results showed that preheating treatment on moringa seeds and extraction duration had a significant impact on oil yield. The optimal conditions were achieved at a preheating temperature of 70°C with an extraction time of 6 hours, yielding the highest oil recovery of 41.74%.
Falx Meningioma, Case Report dan Review Januarman, Januarman; Muhammad Rosyidi, Rohadi; Sutanegara, Kadek Diah Permata; Priyanto, Bambang; Hadi, Surahman; Hidayat, Teuku Ari; Abdurrosid, Lalu Muhammad Kamal
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 4 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i4.782

Abstract

Meningioma are tumors of the central nervous system that originate in the meninges and spinal cord. It is a benign, slow-growing neoplasm thought to originate from meningothelial cells. Meningiomas are usually oval lesions attached to the dura mater. Meningioma are most commonly located supratentorial to the calvaria or base of the meninges. Meningiomas can also be found in the tentorium, intraventricular or in the cerebellopontine position. Meningioma arise from meningothelial cap cells that are normally distributed through the arachnoid trabeculation. The greatest concentration of meningothelial cells is found in the arachnoid villi in the dural sinus, cranial nerve foramina, middle cranial fossa, and cribriform plate. Furthermore, meningiomas are commonly found over the convexity, along the falx, and at the base of the skull.
Karsinoma Nasofaring, Review Muhammad Rosyidi, Rohadi; Kadriyan, Hamsu; Taufik, Ahmad; Zulkarnaen, Decky Aditya; Abdurrosid, Lalu Muhammad Kamal
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 4 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i4.787

Abstract

Nasopharyngeal carcinoma is a malignancy that arises due to abnormal growth of body cells that appear in the nasopharyngeal area, namely the area above the throat and behind the nose. Almost 60% of malignant tumors of the head and neck are nasopharyngeal carcinomas, followed by malignant tumors of the nose and paranasal sinuses (18%), larynx (16%), and oral cavity tumors. Nasopharyngeal carcinoma is endemic in certain regions of the world, especially in Southeast Asia, and has a poor prognosis, with the highest incidence in southern China. Indonesia is one of the countries with a high prevalence of nasopharyngeal cancer patients. The average prevalence recorded is 6.2 cases per 100,000 Indonesian population with 13,000 new cases of nasopharyngeal carcinoma each year.
Makrofauna Permukaan Tanah Di Bawah Satuan Pohon Campuran Alpukat, Kakao, dan Kopi Di Desa Senaru Lombok Utara Adinda Utami, Annisa; Susilowati, Lolita Endang; Jaya, Dori Kusuma; Azizah, Isnaniar Rahmatul
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 1 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i1.659

Abstract

The presence of soil macrofauna can serve as an indicator of land quality changes, as high macrofaunal diversity generally reflects a healthier ecosystem. This study aims to assess soil macrofauna diversity in agroforestry land in Senaru Village, North Lombok, to provide an overview of soil ecosystem conditions in the area. The research was conducted in the Special Purpose Forest Area of Senaru Village on mixed tree stands of avocado, cacao, and coffee, from October to September 2023. The study employed a descriptive-quantitative method using the pitfall trap technique to collect macrofauna. Data were analyzed using Margalef’s species richness index (R), Shannon-Wiener diversity index (H’), and Pielou’s evenness index (E’).  The results indicate that the soil is slightly acidic (pH 6.4), with a moderate organic carbon content (2.45%) and adequate moisture levels (57%). High soil temperature (35°C) contributes to increased organic matter decomposition, while a litter layer thickness of 6.5 cm helps maintain soil moisture. Macrofauna diversity was classified as moderate, dominated by the phylum Arthropoda, particularly the family Formicidae (134 individuals). The families Rhoppalidae (Hemiptera) and Isotomidae (Collembola) were also abundant. Species richness indices showed that coffee and cacao stands had moderate species richness, whereas avocado had lower values. Macrofauna evenness was uneven, with the highest distribution in coffee stands (47%) and the lowest in avocado (34%). These findings suggest that the agroforestry land in Senaru Village still supports soil macrofaunal diversity, with tree species variations influencing species distribution and richness.
Analisis Bibliometrik Perkembangan Teknologi Beton Serat (Fiber Reinforced Concrete) dengan Campuran Serat Alam De Side, Gagassage Nanaluih; Khalil, Fakhrul Irfan; Zulfikar, Wahyudi; Putra, Guyup Mahardhian Dwi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 1 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i1.671

Abstract

The addition of natural fibers in concrete is of great interest in the field of construction materials. Compared to man-made fibers, natural fibers are cheaper and locally available. In addition, the use of natural fibers is certainly more eco-friendly than the use of synthetic fibers but can produce the same strength in its application as an additive. This study aims to determine the development trend of concrete technology with natural fiber admixtures, including the various types of natural fiber waste used, so that it can be a consideration and reference in the use of natural waste in the mix design of natural fiber concrete (Fiber Reinforced Concrete). This study uses bibliometric analysis and literature review methods using Publish or Perish/Harzing software and VOSviewer v.1.6.20. This study was conducted by bibliometric analysis method of concrete technology development that utilizes waste mixture as fiber in Google Scholar indexed publications from 2014 to 2023. Furthermore, the co-cite, coupler, and cluster analysis methods will be used to analyze the collaboration network, and VOSviewer v.1.6.20 is used to visualize this network with three visualization analyses; Network Visualization, Overlay Visualization, and Density Visualization. Of the total publications indexed by Google scholar, namely 989 documents, 958 documents have year information and 31 documents do not have information on the year of publication. The highest publication growth development with this topic occurred in 2021, which reached 284 publications (28.7%), while the lowest publication development was in 2024, totaling 10 documents (1%).
Rancang Bangun dan Uji Eksperimental Performa Burner Biomassa Berbahan Bakar Limbah Nyamplung (Calophyllum Inophyllum) dan Pelet Kayu Syamsiro, Mochamad; Anwar, Nurcaya Putra; Ika, Siti Rochmah; Mulyono, Agus; Laksana, Feri Febria; Rina, Fadmi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 1 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i1.702

Abstract

As a tropical country, Indonesia has abundant biomass potential because plants grow all year. Among the several types of biomass, nyamplung kernel cake (NKC) has a high potential for use as an energy source. The goal of this research was to develop a biomass burner and evaluate its performance using NKC and wood pellets (WP) as comparisons. The burner performance test is designed to investigate the effect of air mass flow rate on combustion flame, heat release rate, and thermal efficiency for both types of biomass. The thermal efficiency of the burner was calculated using the water boiling test (WBT). The results revealed that using NKC resulted in a longer combustion flame at air flow rates of 146 and 219 g/s. The higher the air flow rate, the longer the flame. The combustion of NKC and WP produced the longest flame, measuring 80 cm with an air mass flow rate of 290 g/s. The experiment also demonstrated that WP produced a higher temperature than NKC. The highest combustion temperature was produced by WP, reaching 818.1°C with an air mass flow rate of 290 g/s. From the two types of biomass evaluated, WP combustion produced more heat than NKC. The highest heat release rate of 35.46 kW was achieved with an air mass flow rate of 290 g/s. The burning of NKC resulted in the maximum thermal efficiency, 30.35% at an air mass flow rate of 219 g/.
Uji Irigasi Tetes Bertingkat Empat Pada Media Tanaman Campuran Tanah Cocopeat dan Kompos Ternak Terhadap Resapan dan Lengas Tanah Negara, I Dewa Gede Jaya; Supriyadi, Anid; Pracoyo, Atas; Yasa, I Wayan; Saleh, Ramdan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 1 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i1.712

Abstract

The utilization of multilevel drip irrigation needs to be supported by adequate planting media so that the provision of irrigation water is optimal. The planting media used practically uses soil mixed with livestock waste compost and cocopeat in polybags. This test aims to determine the ability of drip irrigation water absorption by the planting media in the form of irrigation depth and soil moisture provision and prediction of irrigation application with a certain duration. The study was conducted on a ½” PVC pipe drip irrigation network with a 2 lt/hour emitter, on a land size of 2 m x 4m x 2m with a water source from PDAM water which is stored in a tank with a capacity of 150 liters and a height of 2.5 m. The test data taken includes data on the distribution of irrigation volume, irrigation depth and soil moisture. The results of the analysis showed that the distribution of drip irrigation depth in cocopeat media ranged from 7.5 cm - 12 cm in 5 minutes, while in rice husks the absorption was around 6.5 cm - 10 cm for the planting media level, with an average Cu of 96% which is very good. The maximum soil moisture that can be provided by four-tiered drip irrigation at a duration of 5 minutes is 30.5% in the early growth phase and at a duration of 10 minutes the average soil moisture is 15%, in the Vegetative phase of plant growth until fruit ripening. So the high irrigation infiltration rate in cocopeat media has the potential to be applied to plants that have long or deep roots, while planting media with rice husks has the potential to be applied to plants with short roots such as vegetables.
Analisis Kinerja Dome Solar Dryer Untuk Pengeringan Kopi Di Desa Karang Sidemen Kabupaten Lombok Tengah Ridho, Rosyid; Khalil, Fakhrul Irfan; Saputra, Oki; Widhiantari, Ida Ayu; Puspitasari, Isnaini; Zulfikar, Wahyudi; Antesty, Sella; Afriana, Tina; Anugerah, M. Titan; Yusuf, Ahmad Rahman
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 2 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i2.735

Abstract

Coffee drying is a crucial stage that influences the final product's quality and flavor. This process must be performed correctly to maintain the quality of the coffee beans and prevent mold growth. This study aims to compare two coffee drying methods, using a Solar Dome Dryer and direct sun drying. The research was conducted in Karang Sidemen Village, Central Lombok, using 100 kg of coffee beans, divided into two groups of 50 kg each for the two drying methods. The results showed that both methods successfully reduced the moisture content to 0%, but the drying with the Solar Dome Dryer was faster (4,320 minutes) compared to direct sun drying (4,380 minutes). The Solar Dome Dryer maintained a more stable temperature (50-60°C) and produced a more consistent drying rate, making it more efficient in preserving the quality of the coffee beans and preventing microbial contamination. This study recommends the use of Solar Dome Dryer for coffee drying in areas with high humidity and variable weather conditions.

Page 28 of 34 | Total Record : 335

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