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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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Rancang Bangun Sistem Kontrol dan Monitoring Tekanan Gas Pada Biodigester Berbasis IoT: Analisis Waktu dan Stabilitas Koneksi ESP32 dan ESP32-S3 (Lilygo T Display S3) Saputra, Oki; Khalil, Fakhrul Irfan; Widhiantari, Ida Ayu
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.v10i4.706

Abstract

This study explores the increasing demand for efficient gas pressure monitoring systems in biodigesters, which play a crucial role in renewable energy production. The primary objective of this research is to design and develop a control and monitoring system based on the Internet of Things (IoT) utilizing the ESP32 and ESP32-S3 (Lilygo T Display S3) microcontrollers. An analysis was conducted to assess the connection duration and stability of both microcontrollers, focusing on the time required to establish a WiFi connection and connect to the Arduino IoT Cloud. The results indicate that the ESP32 achieves an initial WiFi connection time of approximately 10 seconds, with total connection durations ranging from 1 minute 3 seconds to 1 minute 36 seconds, while the ESP32-S3 encounters challenges in maintaining stable connectivity, resulting in total connection times between 1 minute 7 seconds and 1 minute 21 seconds due to certificate validation issues. These findings underscore the importance of selecting the appropriate microcontroller to optimize IoT applications for gas pressure monitoring systems in biodigesters, providing insights for developers and researchers to enhance the efficiency and reliability of renewable energy technologies.
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. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.720

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.
VOCs (Volatile Organic Compounds) Concentration Measurement in Human-Exhaled Breath - A Preliminary Study: Measurement of VOC Levels in Human-Exhaled Breath Hadi, Kasnawi Al; Budianto, Arif; Alhadawiah, Sabila; Fidya, Karina Alma; Rahayu, Satutik
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.v10i4.728

Abstract

VOC is a group of organic compounds that easily evaporate into the atmosphere and have various impacts on human health and the environment. Human exhaled breath and VOC is related to each other. The concentration of VOC differs from an abnormal condition to other abnormalities. However, there is limited information or study about VOC concentration in human exhaled breath. In line with this, this study aims to develop a VOC meter or a measurement system using a CCS811 sensor for human exhaled breath. This study used a CCS811 sensor, a microcontroller, and a suction pump installed inside a sensor box. The system was calibrated using filtered and non-filtered air. The system was tested using varying flow rates. At the final test, the system was tested to measure VOC levels in human exhaled breaths. The results show that the VOC measurement system can measure VOC levels in different air conditions for both filtered and non-filtered air. The use of different flow rates influences the system's performance. The highest sensitivity level is obtained at 0.7 m/s of the flow rate of the suction pump. The system was also able to measure VOC concentrations of the human exhaled breath with concentrations of 0 ppb to 1156 ppb. The VOC concentrations of human exhaled breath depend on many factors that should be further analyzed, including the medical treatment history, food consumption, placebo effect, and many other parameters.
Estimasi Cadangan Karbon Tegakan Mangrove di Lombok Barat, Nusa Tenggara Barat Lestariningsih, Wiwid Andriyani; Himawan, Mahardika Rizqi; Siagian, Raja Aditya Sahala; Majerus, Kara Muriel Angela; Putra, Brilliant Rudzaky Ridwan; Anggereni, Aprilia; Buhari, Nurliah
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.v10i4.729

Abstract

Mangrove ecosystems are a vital form of aquatic ecosystem that significantly contribute to maintaining carbon balance in the atmosphere and support climate change mitigation efforts. Their ability to absorb and store carbon in both biomass and soil makes them among the most effective carbon sinks. This study aims to estimate the carbon storage of mangrove stands in the Gita Nada Mangrove Area, Sekotong, West Lombok. The research was conducted at three stations: Station 1 (Berambang), Station 2 (Siung), and Station 3 (Bangko-Bangko). Data collection involved a 10 x 10 meter transect, where species and diameter at breast height (DBH) data were recorded. Allometric equations were then applied to calculate biomass and carbon reserve values. The results identified four mangrove species: Rhizophora mucronata, R. stylosa, R. apiculata, and Avicennia marina. The average mangrove density at each station fell within the moderate to dense category, with values ranging from 1000 to 4666.66 individuals per hectare. The estimated carbon stocks of the mangrove stands were as follows: Station 1 had 149.33 tons per hectare, Station 2 had 28.38 tons per hectare, and Station 3 had 476.36 tons per hectare. These findings indicate significant differences in estimated carbon stock values across the stations. Overall, the results of this study provide crucial information to support conservation and restoration efforts for mangrove ecosystems in West Lombok, enhancing understanding of the role of mangroves in mitigating climate change.
Pengukuran Daya Terima BTS 4G Pada Kondisi Hujan Dengan Metode Coordinated Scheduling/Interference avoidance Yadnya, Made Sutha; Wedarama, I.G.P. Wedashwara; Sudiarta, I Wayan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.732

Abstract

The quality of signal reception from the Base Transceiver Station (BTS) which is still installed is the highest on the 4G VoLTE network from the provider provider within the coverage area of the Mataram University Campus is still fluctuating. This needs to be carefully monitored so that users can surf the internet or use IoT facilities properly according to access requirements. data transfer needs... Conditions due to environmental disturbances such as rain are also disrupted. This requires accurate measurements, this research is done with the help of software installed on the user according to their moving position along the existing road access. The measurement results were obtained in rainy and clear sky conditions and it was found that differences and cell movement were disturbed. Recommendations to providers in this paper are input for improving the quality of providers in the Mataram University area.
Pengaruh Tumpangsari Jagung (Zea mays L.) dengan Famili Fabaceae terhadap Populasi dan Pertumbuhan Gulma Serta Efisiensi Penggunaan Lahan DI Lahan Kering Ngawit, I Ketut; Farida , Nihla; Haryanto, Hery
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.745

Abstract

The research aims to examine the effect of intercropping corn with the fabaceae family on weed population and growth as well as land use efficiency. The research was designed with a single factor treatment with a randomized block design in 3 blocks. This treatment is a monocrop planting pattern and intercropping of corn with peanuts, soybeans, green beans, red beans and cowpeas. The parameters observed include the weight of dry biomass and dry seeds of plants, the population and weight of dry biomass of weeds. As a result of the research, 16 weed species were found with high species diversity, evenness, dominance and abundance. It was found that 6 species of weeds were dominant and existed during plant growth, namely Cyperus rotundus, Paspalum vasginatum, Leersia hexandra, Digitaria longiflora, Cynodon dactylon, Synedrella nodiflora and Amaranthus gracilis. Peanuts and cowpeas are suitable for intercropping with corn because they can reduce the population and growth of weeds and do not compete with corn. Soybeans, green beans and red beans are not suitable for intercropping with corn because they are not effective in suppressing the population and growth of weeds and compete with corn, so that corn yield losses due to weed competition are 62.37% - 63.77% and corn yield losses due to crop competition reach 38.20 % – 40.96 %. The best ecological and agronomic land use efficiency was obtained from intercropping corn with peanuts and cowpeas, with land equalization values ​​(LEV) based on plant biomass weight of 1.90 and 1.89 and based on dry seed weight of 1.79 and 1.78 (LEV > 1).
Keanekaragaman, Dominansi, Daya Adaptasi dan Kehilangan Hasil Beberapa Varietas Kacang Tanah (Arachis hypogeae L.) Akibat Kompetisi Gulma Berdaun Lebar di Lahan Kering Ngawit, I Ketut; Wangiyana, Wayan; Farida , Nihla
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.746

Abstract

The aim of this research is to determine the weed species that play the greatest role in causing yield loss of several peanut varieties in dry land. The research was carried out on dry land owned by farmers in Pesanggrahan village, Montong Gading sub-district, East Lombok Regency, for 8 months. The research consisted of two stages, the first stage was descriptive research which aimed to observe the character of weed diversity using the basic principles of vegetation analysis, to obtain data on weed growth, population, density, frequency and dominance. Meanwhile, the second study used an experimental method, and the experiment was designed using a randomized block design, with a split plot pattern. As the main plot there are three varieties of peanuts, namely the Kidang, Gajah and Kelinci varieties. Meanwhile, the sub-plot consists of five treatments, namely weed-free plants during their growth, plants with weeds of all types of weeds during their growth, plants with weeds only from grasses, sedges and broad leaves during their growth. The results of the research show that Poaceae weeds are dominant during plant growth with quite high distribution and dominance index values, so they remain dominant during plant growth. The adaptability of the three varieties of rabbits, sheep and elephants is very low in the grass weed growing environment. The adaptability of the Elephant variety is higher than that of Rabbits and Sheep, especially in plant growing environments with sedge and broad-leaved weeds. The highest loss of crop yield occurred in the treatment of all types of weed plants and in the treatment of weed plants. Meanwhile, the lowest occurred in the treatment of broad leaf weed plants.
Uji Biologis Berbagai Formula Pakan Ayam Petelur Menggunakan Maggot BSF Purnamasari, Dwi Kusuma; Wiryawan, I.K.G.; Sumiati, Sumiati; Erwan, Erwan; Maslami, Vebera; Ramadhan, I.P.; Islam, L. Azan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.747

Abstract

Research on using maggots as a feed ingredient for laying hens is one solution to the problem of increasing feed prices and BSF maggots also have the potential to overcome environmental problems caused by the accumulation of organic waste. The research was carried out in 3 stages, namely: Stage 1. Macronutrient chemical testing of all ingredients to be used in the feed formula for laying hens. Stage 2. Preparation of 3 feed formulas using bran, corn, concentrate, and maggot according to the needs of layer phase laying hens. Stage 3. Biological testing of 3 feed formulas for 120 chickens divided into 3 treatments and 4 replications consisting of 10 chickens, according to a Completely Randomized Design. The parameters observed were feed consumption, egg weight, egg production, FCR, and egg quality both external and internal. The collected data will be tabulated and Analysis of Variance (ANOVA) and Duncan’s Multiple Range Advanced Test will be carried out. This research shows that giving up to 30% maggot was not able to produce better feed consumption, egg weight, egg production, and feed conversion compared to the control. However, based on an analysis of the internal quality of the eggs, the treatment with 30% maggot was able to produce eggs with a high yolk score (9.70±0.66) and was significant compared to the control (8.30±0.75). The conclusion from this research is that maggots have the potential to be used as feed for laying hens up to a level of 30%.
Analisis Dampak Perubahan Tata Guna Lahan terhadap Debit Limpasan di Kecamatan Selaparang dan Mataram Budianto, Muh Bagus; Sulistiyono, Heri; Setiawan, Ery; Hartana, Hartana; Zainudin, Rahman
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.748

Abstract

Selaparang and Mataram Districts are two of the six districts in the Mataram City area that experience changes in land use every year. This change can affect the absorption capacity of groundwater in the area to decrease so that if there is rain with a fairly high intensity, it can cause water to overflow to the surface and inundate the area. This study was conducted to determine the runoff discharge that occurred due to changes in land use that occurred in 2013, 2018, and 2023, and to compare the runoff discharge in 2023 with the runoff discharge based on the Regional Spatial Plan of Selaparang and Mataram Districts in 2011-2031. The initial stage in this study was to collect several secondary data such as rainfall data, land use based on the regional spatial plan, and others that can be obtained from related agencies. After that, the next stage is the delineation of the catchment area and land use analysis with the help of ArcGis and Google Earth software, as well as runoff discharge analysis. The results of the analysis show that the percentage increase in runoff discharge that occurred in Selaparang District in 2013-2018, 2018-2023, and 2013-2023 was 2.21%, 1.40%, and 3.64%, respectively. Meanwhile, the percentage increase in runoff discharge in Mataram District in 2013-2018, 2018-2023, and 2013-2023 was 2.43%, 0.73%, and 3.18%, respectively. Based on this, it can be concluded that the reduction in green land area and the increase in built-up land area each year will cause an increase in the runoff coefficient value, so that the runoff discharge that occurs in Selaparang and Mataram Districts also increases every year.
Pola Pertumbuhan Karang Genus Acropora Hasil Transplantasi Pada Media Blok Mars dan Meja di Perairan Pantai Pandanan Lombok Utara Fitriani, Rahmah; Rosyada, Vivian; Adiba, Nur; Ardiansyah, Yanuar; Jefri, Edwin; Lestariningsih, wiwid Andriyani; Himawan, Mahardika Rizqi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.749

Abstract

Pantai Pandanan yang terletak di Desa Malaka kecamatan Pemenang merupakan salah satu destinasi wisata pantai yang terletak di Lombok Utara. Pantai Pandanan memililiki ekosistem terumbu karang yang mendukung keanekaragaman hayati lokal dan merupakan bagian penting dari ekosistem laut setempat. Penelitian ini bertujuan untuk membandingkan pertumbuhan karang Acropora yang ditransplantasi menggunakan dua jenis media, yaitu blokmars dan meja, di perairan Pantai Pandanan, Lombok Utara. Penelitian dilakukan selama empat bulan, dari Mei hingga Agustus 2024, dengan pengamatan pertumbuhan panjang karang setiap bulan. Hasil penelitian menunjukkan bahwa karang yang ditransplantasi pada media blokmars mengalami pertumbuhan yang lebih signifikan dibandingkan dengan media meja. Rata-rata pertumbuhan karang pada media blokmars meningkat lebih cepat pada awal periode transplantasi, sedangkan pada media meja pertumbuhannya lebih lambat. Media blokmars terbukti lebih stabil dan efektif dalam mendukung pertumbuhan karang, karena memiliki struktur yang memfasilitasi perlengketan dan penyediaan nutrisi yang optimal. Berdasarkan hasil ini, media blokmars direkomendasikan sebagai pilihan yang lebih baik untuk kegiatan rehabilitasi terumbu karang

Page 27 of 34 | Total Record : 335

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