cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
ZULKARNAEN
Contact Email
zul_lemlit@unram.ac.id
Phone
-
Journal Mail Official
jurnal.stl@unram.ac.id
Editorial Address
-
Location
Kota mataram,
Nusa tenggara barat
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).
Arjuna Subject : -
Articles 335 Documents
 13   14   15   16   17 
Degradation Degradasi Pewarna Tekstil Remazol Violet 5R Dengan Metode Elektrooksidasi Menggunakan Elektroda Grafit: Degradation of Remazol Violet 5R Textile Dyes with Electrooxidation Method Using Graphite Electrode Suseno Suseno; Petrus Darmawan; Peni Pujiastuti; Sumardiyono Sumardiyono
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i2.370

Abstract

Remazol Violet 5R textile dye degradation experiment has been carried out by electrooxidation method using graphite electrodes. The electrooxidation device consists of a plastic tub with a size (p x l x h) = 20 x 20 x 25 cm which is equipped with an electric stirrer and graphite electrodes using a used battery anode. Graphite electrodes consist of 3 pairs arranged in parallel. This dye degradation experiment was carried out using a batch system (not continuous) with variations in stirring time of 15, 30, 45, and 60 minutes, while the other variables were fixed, namely the concentration of dye 100.24 mg/liter, electrolyte NaCl 2.06 g/liter, 12 V voltage, and a stirring speed of 250 rpm. The dye solution before degradation and after degradation was measured for absorbance using a UV-Vis spectrophotometer at the maximum wavelength, to determine the percentage decrease in absorbance and optimum contact time. The experimental results showed that the percentage decrease in absorbance was constant after a contact time of 30 minutes with an absorbance of 98.36%. This indicates that the optimum contact time for the degradation of Remasol Violet 5R dye is 30 minutes. From the experiments that have been carried out, it can be concluded that the electrooxidation method using graphite electrodes can be used as an alternative waste treatment method, especially in terms of removing dyes in textile industry wastewater.
Pengukuran Kekuatan Sinyal Receive Strangth Signal Indicator (RSSI) 4.5G VoLTE Provaider Telkomsel di Universitas Mataram: Signal Strength Measurement Receive Strangth Signal Indicator (RSSI) 4.5G VoLTE Provider Telkomsel at the University of Mataram Made Sutha Yadnya; I. G. P. Wedashwara Wedarama; I Wayan Sudiarta
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i2.375

Abstract

This is an initial study to determine the quality of the 4.5G VoLTE signal in the area around the University of Mataram campus. This is done to get the Receive Strangth Signal Indicator (RSSI) measurement emitted by the Base Transceiver Station (BTS) owned by the Telkomsel provider at FMIPA because the VoLTE signal is unstable. The measurement method used is the drive-test. But the results are not entirely as desired. Because in some places it turns out that the quality of receiving power is very weak. Measurements obtained by drive-test carried out in the morning, afternoon, evening and night, obtained the difference in the average signal, the value of each measurement place so that it can be read more quickly converted from numbers to colors. The measurement results and theory were compared so that the RSSI level at Mataram University was obtained.
Potensi Ampas Kopi Dan Kulit Kopi Sebagai Bahan Baku Alternatif Pada Pakan Ikan: Potential Use Of Coffee Ground And Coffee Silver Skin As Alternative Ingredients In Fish Feed Wastu Ayu Diamahesa; Nuri Muahiddah
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i2.382

Abstract

The ever-increasing demand for and consumption of coffee from year-to-year results in a rise in waste, particularly coffee grounds and coffee skins. Multiple attempts have been made to utilize this waste in the cosmetics, pharmaceuticals, and industrial sectors. As a result of the waste's nutritious content, there is a significant potential for its usage as fish feed's ingredients. However, only a small number of researchers have examined the use of coffee grinds and coffee skins in aquaculture, particularly for tilapia (Oreochromis niloticus) and Olive flounder (Paralichthys olivaceaus). This article aims to provide an overview of the potential use of coffee grounds and coffee skin in the world of aquaculture, particularly fish feed, in terms of nutrients and their application in enhancing the quality of these raw materials utilizing a fermentation process aided by probiotic microorganisms.
Corn Value Chain in Dompu: Constraints and Alternative Policy Interventions to Improve the Value Chain Muktasam Abdurrahman; Parta Tanaya I.G.L; Nurjannah S; Janet R
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i2.384

Abstract

Even though corn has been a common agriculture commodity growing by Dompu farmers, few issues remain such as limited input supply especially fertilisers. As results, farmers could not follow the recomended fertiliser doses that lead to low productivity. This study was conducted to clearly identify the issues and constraints along the corn value chain, and identify options to address the issues. Quantitative and qualitative menthods were applied to the study. The findings from this study highlight that the corn value chain was very simple where farmers sell their corn to the village level collectors named as palele, then the palele sell the corn to the sub-district level collecotrs, and then they sell to the exporters. It is the roles of these exporters to sell the corn to other island and or to international markets. Issues found in the corn value chain are: the limited supply of fertilisers, broadcasting technique for fertilizer application, corn price fluctuation, and low corn productivity. It is recomended that the local government take few policy options to address the issues, and improve the value chain performance that lead to better smallholder farmers’ livelihood improvement.
Efektifitas Filtrat Kultur yang Dihasilkan Oleh Berbagai Ras Sclerotium Rolfsii Terhadap Pertumbuhan in Vitro Kecambah Kacang Tanah: Effectiveness Of Culture Filtrate Produced By Sclerotium Rolfsii Races Against In Vitro Growth Of Peanut Seedling A Farid Hemon
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i2.385

Abstract

The objective of this research was to evaluate of culture filtrate effectiveness produced by S. rolfsii races against in vitro growth of peanut seedling. The experiment was inisiated with characterize and hyphal anastomosis group test of S. rolfsii isolates. This experiment has been gotten 4 races (race 1, 8, 6, 9). Four races were proliferated for used as culture filtrate selective agents. This culture filtrate will be used as material to be added with MS medium to peanut seedling growth test. Culture filtrate MS medium (MS+CF) consisted of MS based medium, B5 vitamin, sucrose (30 g/L), agar, and culture filtrate (different concentration 0, 25, 30, 35%). Seeds of peanut (cv. Local Bima, Kelinci, G-250, G-300) were cultivated in different concentration of culture filtrate of MS+CF medium. Results of study showed that culture filtrate from different races affected significantly againts seed germination ability and inhibited growing peanut seedling. Culture filtrate concentration 35% was more inhibited to peanut seedling growing compared with lower culture filtrate concentration or compared control (without culture filtrate).
Kajian Penggunaan Maggot (Hermetiaillucens) Dalam Pakan Terhadap Kualitas Telur Ayam Ras: The Use of Black Soldier Flyer (Hermetia illucens) Larva in Feed of Eggs quality Laying Hens Sumiati Sumiati; D. K. Purnamasari; Erwan Erwan; Syamsuhaidi Syamsuhaidi; K. G. Wiryawan; Dela Fatmala; Abu Thalib
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i2.386

Abstract

This study aims to determine the effect of using Hermetia illucens maggot in feed on the internal and external quality of broiler eggs.The study used 80 laying hens aged 6 months which were divided into 4 treatments, 5 replications and each replication consisted of 4 tails. The variables observed were the external quality of eggs (egg weight, egg shape index, shell thickness, egg shell weight) and internal eggs (egg white index, yolk index, egg Haugh units, egg yolk color). The data obtained were analyzed with a completely randomized design. The average results of egg weight ranged from 56.18 g/egg - 56.98 g/egg, egg shape index between 73.91-80.54%, egg shell thickness between 0.35 mm – 0.38 mm, weight egg shells between 6.97 g/egg - 7.15 g/egg . While the egg white index ranged from 0.10 to 0.14, the yolk index ranged from 0.39 to 0.45, the Haugh unit ranged from 84.50 to 99.30, the yolk color ranged from 8.50 to 10.60. It was concluded that the use of Hermetia Illucens maggot 5%, 10%, 15% in feed resulted in external and internal quality of chicken eggs in the normal range.
Pengaruh Pemupukan Dan Pemangkasan Terhadap Pertumbuhan Dan Hasil Melon (Cucumis melo L.) di Lahan Kering: Effect of Fertilization and Pruning on Growth and Yield of Melon (Cucumis melo L.) in Dry Land Jayaputra Jayaputra; Bambang Budi Santoso; Komang Damar Jaya
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i2.387

Abstract

The aim of this study was to determine the effect of a combination of NPK fertilizer and liquid organic fertilizer (POC) and pruning and its interaction on the growth and yield of melon plants on dry land. The experiment used a two-factor factorial randomized block design, namely: Application of NPK + Liquid Organic Fertilizer (POC) (b0 = 100% NPK without POC; b1 = 50% NPK + Bio-Extrem POC; b2 = 50% NPK + Organox POC) ; and Pruning (p0 = No Pruning, p1 = Pruning by maintaining 2 main branches). The results showed that pruning had a significant effect on the percentage of class C fruit quality, while fertilization treatment had no significant effect on all observed parameters. The interaction of the combination of fertilization and pruning had no significant effect on the growth and yield of melons, however, the combination of fertilizing with pruning was able to avoid fruit weight <1 kg (class C fruit quality). The use of a combination of 50% NPK + POC (Bioektrim / Organox) fertilizer and pruning can be used as a technology package in an effort to reduce the use of inorganic fertilizers and increase the yield and quality of melon fruit on dry land.
Aplikasi Irigasi Tetes Bertingkat Dengan Tanaman Horti Kultura di Perumahan Padat Penduduk Kota Mataram Hulu: Application Of Dropping Irrigation With Horti Culture in Solid Population Housing in Mataram Hulu City I Dewa Gede Jaya Negara; Bambang Hariyanto; Anid Supriyadi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i2.388

Abstract

This study aims to determine the application of a three-storey drip irrigation system to horticultural crops of chilies, kale and eggplant as one of the household food supporting crop commodities. In addition to increasing the potential for irrigation and boosting the economy from agricultural products on this limited land, it is necessary to know this, so that it can be used as material for consideration in maintaining family food security. Irrigation test activities were also carried out on irrigation uniformity, irrigation distribution and irrigation depth at various irrigation times. Tests were carried out on variations of soil and compost as planting media with the ratios of: 70%: 30%, 50%: 50%, 30%: 70% and four variations in tank water volume. The drip application network uses ½” PVC pipe and dripe on the third floor, while for the first and second levels the Netafim (NTF) pipe is 12 mm. The secondary irrigation network uses ¾ inch, 1 ½ inch and ½ inch PVC in an irrigation test chamber measuring 1.5 m x 4 m and a height of 1 m between levels. The results of the analysis of the test data showed that the uniformity of PVC drip irrigation and NTF combined obtained an average of above 95%, with a very even distribution of water. Irrigation depth obtained at all variations of the water tank level, that is, at 70% of the soil ranges from 3cm -20 cm, at 50% of the soil ranges from 4cm - 20cm and at 30% the amount of infiltration ranges from 2.5 cm - 18.5 cm. Multilevel drip irrigation can support the provision of family food in meeting the needs of kitchen ingredients such as chilies and vegetables to support family food security
Pengaruh Sosialisasi, Kondisi Sosial Ekonomi, serta Dukungan Pemerintah Terhadap Adopsi Inovasi Pengelolaan Sampah Organik: The Effect of Socialization, Socio-Economic Conditions and Governemnt Support on The Adoptionof Organic Waste Innovation Ferdial Ferdial; Sri Listyarini; Lina Warlina
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 1 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i1.391

Abstract

Successful of organic waste management is closely related to the adoption of innovation by the community. This study aims to see the effect of socio-economic conditions, socialization and government support to the adoption of organic waste management innovation. Research location was in Perak Utara Village, Pabean Cantikan District, Surabaya for 100 respondents. Independent variables are socialization programs, socio-economic conditions and government support while innovation adoption is the dependent variable. Data was obtained through a questionnaire. Data analysis used SPSS 25.00 for windows. Through linear regression analysis, the influence of independent variables consists of socialization program (X1), socio-economic conditions (X2) and government support (X3) on the dependent variable adoption of innovation (Y) are obtained by equation: Y' = -0.830 + 0.525X1 + 0.132X2 + 0.610 X2 + e. Without good social economic conditions (X1 = 0), no outreach program (X2 = 0) and without government support (X3 = 0) will have a negative effect on innovation adoption. Determination analysis shows the influence of independent variables to the dependent variable is 63.1% or socialization program, socio-economic conditions and government support are able to explain 63.1% of the innovation adoption, while remaining 36.9 % is influenced by other variables outside of this study.
Uji Kinerja Metode Asam Askorbat pada Pengukuran Kadar Fosfat dalam Air Permukaan secara Spektrofotometri : Performance Test of the Ascorbic Acid Method on the Measurement of Phosphate Levels in Surface Water by Spectrophotometry Ardina Purnama Tirta; Anom Cahyotomo; Herawati; Inda Mapiliandari; Esti Isnainiyati
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 1 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i1.402

Abstract

Phosphorus is easily found in its compound form in nature, namely as phosphate (PO43-). Phosphates have an essential role in limiting nutrients for plants and animals. An increase of phosphate in the aquatic environment can cause unwanted impacts, including blooming algae, low dissolved oxygen, and the death of certain aquatic animals. Determination of phosphate in the aquatic environment is critical to do as a monitoring effort. The performance test of the phosphate determination method needs to be carried out to provide quality assurance of the test results. In this study, the performance test of the ascorbic acid method was carried out in the determination of phosphate levels by spectrophotometry. The modification was made by changing the sample volume from 50 mL to 10 mL. The performance test on the linearity parameter obtained the regression equation y = 0.6379x + 0.0083 with a correlation coefficient value, r = 0.9999 in the concentration range of 0.05 – 1.00 mg/L P_PO4. The instrument detection limit (IDL), method detection limit (MDL), and the theoretical limit of quantitation (LoQ) obtained were 0.01 mg/L, 0.02 mg/L, and 0.04 mg/L P_PO4, respectively. As a precision test, the value of the relative standard deviation percentage (%RSD) is 1.07%. The range of percent recovery (%recovery) obtained was 99 – 102%. The relative uncertainty value was obtained at 2.5% at 0.40 mg/L P_PO4 concentration. Robustness tests at 50 mL and 10 mL sample volumes gave acceptable F-test and t-test results. The results showed that the ascorbic acid method in determining phosphate levels by spectrophotometry with modification of the sample volume gave acceptable method performance results.

Page 15 of 34 | Total Record : 335

 13   14   15   16   17 

Filter by Year

2015 2025


Reset
Filter By Issues
All Issue Vol. 11 No. 4 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 3 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 2 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 1 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 4 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 1 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 3 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 2 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 1 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 2 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 1 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN 2021: Special Issue, Oktober 2021 Vol. 7 No. 2 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 1 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 6 No. 2 (2020): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 6 No. 1 (2020): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 5 No. 2 (2019): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 5 No. 1 (2019): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 4 No. 2 (2018): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 4 No. 1 (2018): Jurnal Sains Teknologi & Lingkungan Vol. 3 No. 2 (2017): Jurnal Sains Teknologi & Lingkungan Vol. 1 No. 2 (2015): JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 1 No. 1 (2015): Jurnal Sains Teknologi & Lingkungan More Issue