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INDONESIA
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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Pengaruh Karakteristik Aspal Modifikasi Getah Pinus Terhadap Peluruhan Campuran Aspal Porus: Effect of pine resin modified asphalt on the draindown of porous asphalt mixture Ratna Yuniarti; Made Mahendra; I D M Alit Karyawan; Desi Widianty; Fera Fitri Salsabila
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.531

Abstract

A porous asphalt mixture is a type of pavement that allows water to drain through, thereby reducing the amount of surface runoff and improving road safety. To drain water quickly, porous asphalt is dominated by coarse aggregate so that the voids in the mixture become larger. Draindown, which is the loss of asphalt binder from the mixture, can cause blockages and reduce the ability of the pavement to drain rainwater. The use of modified asphalt is expected to increase the bonding between the asphalt and aggregate to withstand loading but meet draindown requirements. The pine resin used as an asphalt modifier in this study was 2%, 3%, 4%, and 5%, whereas the percentage of gumrosin was 4% by weight of the modified asphalt. Modified asphalt testing includes the penetration, softening point, ductility, and weight loss. The mixing process of the aggregate with modified asphalt was carried out at 160 °C with asphalt contents of 4.5%, 5%, and 5.5% by weight of the asphalt mixture. The results showed that the penetration value, ductility, and weight loss of the modified asphalt increased, while the softening point decreased with the addition of pine resin. In general, the physical properties of the modified asphalt have a significant effect on the draindown value. Referring to the draindown specifications of the porous asphalt mixture (0.3 %), this requirement is fulfilled in all modified asphalt compositions and asphalt contents used in this study.
Pengukuran Dan Pemodelan Serat Optik Dalam Kondisi Terpapar Sinar Matahari yadnya, Made Sutha; Zainuddin, Abdullah; Parhadi, Wahyu Chandra
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 1 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i1.541

Abstract

Optical fiber is a transmission line or a type of cable made of glass fiber or plastic which is very fine and smaller than a strand of hair, and can be used to transmit light signals from one place to the recipient. Optical cables that float and hang openly exposed to sunlight, or are embedded exposed to burning rubbish cause additional attenuation which results in signal transmission which causes communication links to break. In this research, measurements and modeling were carried out of conditions assuming an increase in heat that occurred. These conditions are carried out on a laboratory scale. Optical isolation really protects the optical fiber. This modeling will predict the useful life of optical fiber which should be used in 30 years. The measurement results are tabulated and sorted so that the distribution of temperature increases is known.
Aplikasi Remote Sensing Untuk Analisis Geohidrologi Pada Area Sekitar Situs Tambang Intan Cempaka: Remote Sensing Application for Geohydrological Analysis in the Area Around the Cempaka Intan Mine Site Ahmad Ali Syafi'i; Rudy Hendrawan Noor; Muh. Akram
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.546

Abstract

Cempaka Diamond Panning is a location for traditionally processed diamond and gold panning located in Cempaka sub-district, Banjarbaru city, South Kalimantan. Mining activities cannot be separated from matters relating to the management of natural resources, which apart from providing benefits, there are also impacts or losses from these activities, especially for the environment. The diamond mine in Cempaka is included in the critical category which has the potential to flood when there is high intensity rain. Therefore, it is necessary to carry out geohydrological analysis using remote sensing. The method used is overlay and weighting by weighting spatial and non-spatial parameters in an area of 3189 Ha. From the results of the analysis, it is known that around 3057.61 Ha of the Cempaka region of interest (ROI) area is included in the flood-prone area and 75.88 Ha of the Cempaka region of interest (ROI) area is a slightly vulnerable area with information about three affected villages, namely Sungai Tiung, Bangkal and Cempaka.
Ragam Bahan Untuk Pembuatan Pakan Khusus Yang Diberikan Kepada Pasangan Kerbau Sumbawa Karapan Sebelum Bertanding (Studi Di Kecamatan Empang Kabupaten Sumbawa): Variety Of Ingredients For Manufacturing Special Feeds Given To Couples Sumbawa Buffalo Racing Before The Competition (Study In Empang District, Sumbawa Regency) Syamsul Hidayat Dilaga; Sofyan Sofyan; Suhubdy Suhubdy; Muhammad Amin; Oscar Yanuarianto
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i3.552

Abstract

A survey was conducted in Empang sub-district, which has many Sumbawa buffalo racing enthusiasts. Before the animals are competed, are they given special feed/herbs? What are their chances of winning? This is what the research will seek to answer, as there is no written information on this subject. The survey found that all farmers give special feed/herbs to their raced sumbawa buffaloes, but the ingredients/recipes differ, ranging from the most complete recipe consisting of 17 ingredients, the medium recipe consisting of 12 ingredients, and the minimalist recipe consisting of 9 ingredients.  All of them have won. The complete recipe won first place (43 pairs of buffalo), the medium recipe won second place (48 pairs of buffalo), and the minimalist recipe (29 pairs of buffalo) won third place.  
Integrasi Ekologis Antara Ternak Sapi Dengan Pengelolaan Tanaman Jagung Yang Ditumpangsarikan Dengan Tanaman Kacang-Kacangan Di Lahan Kering: Ecological Integration Between Cattle with the Management of Corn Intercropped with Legumes on Dry Land I Ketut Ngawit
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i3.555

Abstract

The obstacle to rearing cattle with a herding system on dry land is the unstable availability of feed because the potential for forage production is low. The reason is because dry land is not managed intensively. The research was conducted with the aim of evaluating the application of a monocrop cropping pattern system and intercropping between corn and beans in dry land. The experiment was designed with a randomized block design consisting of nine treatments, namely monocrops of corn, peanuts, soybeans, red beans and cowpeas, as well as intercropping between corn and peanuts, soybeans, red beans and cowpeas. The results of the research show that in the management of a monocrop cropping system and intercropping between corn and beans, weed diversity was found to be quite high, namely 20 families with 39 species, which included 10 species of Poaceae, 9 species of sedges and 20 species of broadleaf. The characteristics of the weeds found were high in species diversity, the ability to spread evenly throughout the corn and bean planting area was high and the ability to dominate the planting area was also high. The best quantity and quality of forage products as raw materials for animal feed are obtained from moorland management with monocrop planting patterns and intercropping of corn with peanuts and cowpeas. In this moorland management system, the potential for forage products obtained is 10.81 – 13.60 kw ha-1 day-1 and the potential land capacity for raising cattle is 5.21 – 5.53 ST ha-1.
Efektifitas Tanaman Refugia Kacang-Kacangan Menangkal Intensitas Serangan Hama Ulat Grayak (spodoptera exigua Hubner.) Pada Bawang Merah: Effectiveness of Bean Refugia to Prevent Intensity Attacks of Armyworm Pests (Spodoptera exigua Hubner.) On Shallots I Ketut Ngawit; Bambang Budi Santoso; Hary Haryanto
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.556

Abstract

This experimental research aims to obtain the type of legume refugia plant that is most effective in preventing invasion, colonization and intensity of attack by the Spodoptera exigua Hubner pest on shallot. The experiment was designed with a randomized block design consisting of six treatments of various refugia plants, namely shallot plants without refugia treatment (Ro), shallot plants with refugia treatment peanuts (R1), soybeans (R2), green beans (R3), red beans (R4) and cowpeas (R5), which are planted in two rows on the side of the bund at a distance of 10 cm from the outermost row of shallot plants. Observation parameters were egg population, larvae, intensity of S. exigua pest attack and weight of fresh shallot bulbs. The variety of refugia plants from the legume group influences invasion, colonization and the intensity of Spodoptera exigua Hubner pest attacks. on red onions. Peanut and cowpea refugia plants planted in two rows on the sides of the shallot mounds, are very effective in preventing invasion, colonization and the intensity of Spodoptera exigua Hubner pest attacks, so that the shallot plants experience very light disturbance with an attack intensity of 2,522% – 4,432 %, which is in the very low category. As a result, the yield of fresh shallot tubers obtained was significantly higher compared to shallot plants without refugia plants and with refugia plants of soybeans, green beans and red beans. Soybean, green bean and red bean refugia plants are not effective in preventing Spodoptera exigua Hubner pest attacks on shallots because the plants experience attack intensity from the age of 49 HST – 63 HST of 21.86% - 23.34% with the attack intensity being in the medium category.
Pengaruh Sistem Drainase Berwawasan Lingkungan terhadap Debit Limpasan pada Daerah Penyangga Kota Mataram : The Effect of an Environmentally Drainage System on Runoff Discharge in the Buffer Area of Mataram City Muh Bagus Budianto; I Wayan Yasa; Agustono Setiawan; Hartana Hartana
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i3.557

Abstract

Mataram as the capital of West Nusa Tenggara Province has attracted people to live in it. The small city of Mataram makes the surrounding area a buffer area for rapid development. This condition can be seen from the increase in housing around Mataram City. This increase in housing area causes a reduction in water catchment areas. So during the rainy season there is an increase in runoff. The aim of the research is to determine the effect of an environmentally friendly drainage system on the amount of runoff discharge. The data required is land use data, rainfall, location maps and soil data. Rainfall data is used for Intensity Duration Frequency (IDF) analysis. IDF curves and land use data are used for runoff discharge analysis. Soil data is used to determine permeability which is used to determine of the discharge of infiltration well. Next, analyze the effectiveness of infiltration wells as an environmentally friendly drainage system. The results of the research show that there has been an increase in residential area over the last 10 years by 58% in Labuapi District, the southern part of Mataram City, 25% in Lingsar District and 29% in Gunungsari District, which is in the northern part of Mataram City. Changes in land use resulted in an increase in runoff discharge of 21% in Labuapi District, 8% in Lingsar District and 15% in Gunungsari District. An infiltration well with a diameter of 1 m and a depth of 1 m can absorb 1.13 m3 of water in the southern part and 1.21 m3 in the northern part of Mataram City. If every 100 m2 of residential area there is one infiltration well, then the effectiveness of the infiltration well in reducing flood runoff is 17.71% in Labuapi District, 15.61% in Lingsar District and 23.35% in Gunungsari District.
Understanding Enabling Factors for Community-Led Coral Reef Health Monitoring and Early Warning System through Participatory Action Research Eni Hidayati; Mahardika Rizqi Himawan; Edwin Jefri
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.560

Abstract

Coral reefs are under pressure from climate change and various factors, putting them at risk of a decline in resilience. This heightened vulnerability increases the likelihood of reaching a tipping point with the next shock or stressor. Identifying early warning indicators for tipping points is crucial for proactive coral reef management. Therefore, this study aims to comprehend the coral reef health parameters considered important and feasible for collection by local stakeholders, as well as identify factors facilitating the implementation of a community-based monitoring and early warning system in a fishers-dominated community. The approach used was Participatory Action Research. The results reveal twelve priority parameters deemed necessary by the local community and feasible for collection by local stakeholders, including the local community, university, and non-governmental organization. The identified parameters are: coral bleaching, visibility, temperature, pH, dissolved oxygen, salinity, current, coral percent cover, fish community, macroalgal canopy cover and composition, benthic composition, and plankton. Interpretive structural model and MICMAC analysis show nine enabling factors supporting the development of a community-led coral reef health monitoring and early warning system. These factors include team motivation, training and team capacity, connection with government, connection with university, facilitation by NGOs, supporting regulations, operational funds, access to equipment, and operation and maintenance of equipment. Team motivation stands out as the most influential factor, with strong driving power and dependence, making it crucial to manage as actions on it will have ripple effects on other factors.
Studi Kuantitatif Kerapatan Lamun di Perairan Teluk Cempi: Implikasi untuk Konservasi dan Manajemen Sumber Daya Laut: Quantitative Study of Seagrass Density in the Waters of Cempi Bay: Implications for Conservation and Management of Marine Resources Lestariningsih, Wiwid Andriyani; Himawan, Mahardika Rizqi; Santika, Lora; Gigentika, Soraya; Wibisono, Rendy Vidya; Hernawati, Hernawati; Himawan, Cahya
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.561

Abstract

Cempi Bay is an important water area with a rich and diverse ecosystem. One crucial component of marine ecosystem that plays a major role in maintaining the balance of the marine environment is seagrass. The objective of this research is to provide critical insights into the dynamics of seagrass populations in Cempi Bay and offer an overview of the broader coastal ecosystem's condition. The research, conducted in June-July 2021 at 5 research stations, employed the transect method. At each data collection point, three transect lines were created perpendicular to the coastline. The distance between transect lines was 100 m, and each transect consisted of 10 quadrants measuring 1x1 m with a 5 m distance for each quadrant. Four seagrass species were identified: Thalassia hemprichii, Cymodocea rotundata, Halodule pinifolia, and Cymodocea serrulata. These species were found on sand substrates, with the highest total density and percentage cover observed at Station 5 (1135.22 ind/m2 and 40.74%). The results highlight the necessity for routine monitoring, mapping, and further research to comprehend seagrass population dynamics and support effective conservation policies. Implementation of recovery strategies, water quality management, and continued research support is imperative to ensure the sustainability of seagrass ecosystems and marine resources in Cempi Bay.
Evaluasi Penyerapan Kadar Logam Pada Daun Tanaman Wetland Pasca Pengolahan Limbah Cair Tenun Hidayat, M. Gegas Imamuna Al; Fajri, Joni aldilla; Wulandari, Dewi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.564

Abstract

Water pollution can be caused by an increase in the number of industries, one of which is the textile industry. One effort to reduce water pollution by heavy metals is by utilizing absorption by plants. This research aims to determine the concentration of metal pollutants Cr, Cu, Cd, and Pb accumulated by Vetiveria zizanioides plants. The test method in this research was wet digestion using a nitric acid solution (HNO3) which was then analyzed using an Atomic Absorption Spectrophotometer (AAS). Based on research results, the average metal absorption concentration of copper (Cu), chromium (Cr), Lead (Pb), and cadmium (Cd) after processing using the FTW system with the help of bacteria in processing the highest metal content is Pb 0.0007 (mg /Kg dry weight) and for Cu it is 0.0001 (mg/Kg dry weight) and Cd metal is 0.00002 (mg/Kg dry weight) and finally Cr is 0.000001 (mg/Kg dry weight). And for processing using the FTW system without the help of bacteria in processing, the average metal absorption concentration of Cu, Cr, Pb, and Cd, the highest metal content at Cu 0.0001 (mg/Kg dry weight) and Pb 0.0003 (mg/ Kg dry weight) for Cr and Cd were not detected. The absorption of Cu, Cr, Pb, and Cd metals did not affect plant growth.

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