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
 14   15   16   17   18 
Skrining Fitokimia Hasil Ekstraksi Bertingkat Daun Jengkol (Archidendron jiringa) dan Aplikasinya Sebagai Zat Antijamur: Phytochemical Screening of Jengkol Leaf (Archidendron jiringa) Sequential Extraction Result and Its Application for Antifungal Agent Mohammad Jihad Madiabu; Ilyas Taufik Abdul Aziz; Supriyono Supriyono; Arie Pratama Putra; Anom Cahyotomo; Hanum Sekar Panglipur
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.v9i1.403

Abstract

Phytochemical screening and antifungal activity test of jengkol leaf (Archidendron jiringa) extract have been carried out. The purpose of this research is determine secondary metabolite content and antifungal activities of jengkol leaf extract. Extraction of jengkol leaf was conducted with sequential extraction technique with various solvent such as hexane, ethyl acetate and methanol respectively. FTIR characterization of jengkol leaf extract show the presence of O-H, C-H C-O and C=O groups. Based on phytochemical sceening test, jengkol leaf extract contains phenolic, flavonoid, tannin, sterol, and alkaloid compound. Antifungal test was investigated on Candida albicans by disc diffusion methods. Jengkol leaf extract that was obtained from methanol extraction show inhibiton zone to Candida albicans of (1,42 ± 0,16) mm, while extraction with ethyl acetate and hexane aren’t show inhibition zone. Antifungal test result showed that jengkol leaf extract has potential as antifungal agent
Evaluasi Kinerja Metode Perhitungan Koefisien Pengaliran: Evaluation of Runoff Coefficient’s Calculation Methods Performance Humairo Saidah; Lalu Wirahman; Lia Hidayaturrohmi
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.v9i1.405

Abstract

The runoff coefficient dramatically affects the volume of surface runoff. The better the method for determining the runoff coefficient, the more precise the estimation of the amount of surface runoff will be so that it can support planning for the management of water resources in an area more effectively. Several runoff coefficient calculation techniques, such as the U.S. Forest Service method, Hassing and Cook use different approaches to produce runoff coefficients. This study examines the accuracy of those methods in producing runoff coefficients by comparing the coefficients obtained from the methods with the actual flow coefficients obtained from measurement data. The results showed that the closest runoff coefficient to the coefficient of measurement one is by the U.S. Forest Service method using the median of the value intervals provided in the USFS table. The second and third best methods are the Hassing and U.S. Forest Service for maximum value.
Pembuatan Nanopartikel CaO dari Cangkang Telur Ayam Menggunakan Ekstrak Etanol Daun Salam (Syzygium polyanthum): Synthesis of CaO Nanoparticles from Chicken Eggshells Using Ethanol Extract of Bay Leaves (Syzygium polyanthum) Mellida Yani; Gladys Ayu Paramita Kusumah Wardhani; Agus Taufiq
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.v9i1.408

Abstract

Chicken  eggshell  waste  contributes  to  environmental because it have CaCO3 content. Calcium  carbonate  in chicken  eggshells  is  used  as  a  basic  material  in  the  synthesis  of  CaO  nanoparticles  through  a calcination process at 900oC. CaO nanoparticles have unique characteristics that make them are needed for various fields of application such as environment, materials, and biomedicine. In addition, the synthesis of these nanoparticles can reduce the use of hazardous and environmentally friendly chemicals. This method has been widely used as an alternative method, one of which  utilizes  secondary  metabolites found  in  ethanol extract of  bay  leaves as reducing  and stabilizing agents. This research was conducted with 3 volume variations of bay leaf extract with calcined eggshell base materials, namely 3:7, 5:5, and 7:3 (v/v) to determine the effect on the resulting particle   size.   Characterization   of   CaO   nanoparticles   using   UV-Vis,   FTIR,   and  SEM.   The nanoparticles obtained were in the form of white fine powder. The characterization results show the maximum absorption of CaO nanoparticles at λ 215 - 270 nm. Based on the FTIR spectra, Ca-O bonds can be identified in the three variations at 712 cm-1  dan 514 cm-1  and  874 cm-1  shows Ca-O-Ca bond. The resulting material has a flake shape and agglomeration morphology with an average particle size range of 43-498 nm.
Pengaruh Kadar Aspal Efektif dan Tebal Selimut Aspal Terhadap Proporsi Rongga pada Campuran Laston: Influence of Effective Asphalt Content and Film Thickness on Voids Proportion of Asphalt Concrete Ratna Yuniarti; Made Mahendra; Hasyim Hasyim; Rohani Rohani; I A O Suwati Sideman
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.v9i1.410

Abstract

In the mixing process between asphalt and aggregate, absorption of asphalt by the aggregate occurs through the pores of the aggregate. The volume of asphalt not absorbed by the aggregate can be defined as effective asphalt content which determines the percentage of airspaces in the compacted mix. The proportion of voids formed in the mixture contributes to the durability of the mixture against temperature and climate conditions. This study aims to examine the effect of effective asphalt content and the asphalt film thickness on the voids proportion in asphalt mixture. Based on the analysis, it can be concluded that the particle size distribution of the aggregate affects the total surface area of the aggregate in the mixture and the pores of the aggregate affect the effective percent of asphalt content. Aggregate with a small grain size produced a larger total surface area of aggregate. Meanwhile the use of aggregate with small pores produced a higher effective percent of asphalt content. The higher the effective asphalt content and the asphalt film thickness, the larger the voids in mineral aggregate and the voids filled with bitumen. In contrast, the voids in the mixture decreases with increase the effective asphalt content and the asphalt film thickness. In all the voids proportions analyzed, the effective asphalt content and the asphalt film thickness have a very significant effect.
Pemanfaatan Kompor Listrik Rumah Tangga Sebagai Pengganti Penangas Air Pada Analisis Kadar Lemak Metode Soxhlet: Use Of Household Electric Stoves As Substitute For Water Baths In The Soxhlet Method Of Crude Fat Content Sri Sulastri; Dwi Kusuma Purnamasari; Sumiati Sumiati
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.v9i1.414

Abstract

This research was conducted with the aim of comparing the results of the soxhlet method of fat content analysis with a waterbath, dan the soxhlet method of fat content analysis with a householh electric stove. Soxhlet is a method of analyzing the fat content with the principle of extracting solvent in the soxhlet flask is heated according to the boiling point so that in evaporates and extracts the fat in the sample. The collected extract is heated again so that the solvent will evaporate again and the fat will be left in the flask.Thus, recycling of the solvent occurs so that each material is extracted with a new solvent. The result of these two tools can be used to analyze fat content with ccurate results. The results showed that the levels of corn fat, moringa flour and rice bran using a water bath andhousehold electric stove were the same, namely 3,99 %, 4,65 % and 7,81 %, at the same temperature and time. Based on these results it can be concluded that household electric stoves can be used as heaters in the analysis of fat content in addition to waterbath. Besides that, household electric stoves have the advantage of being cheap and easy to obtain, compared to waterbath.
Pengaruh Proses N-Hexane Solvent Extraction pada Ekstraksi Bitumen dari Aspal Buton sebagai Bahan Baku Minyak Bumi Nonkonvensional: The Effect Of Solvent N-Hexane Extraction on Bitumen Extraction from Butone Asphalt As A Raw Material af Non-Conventional Natural Oil Hermin Hardyanti Utami; Setyawati Yani; Zakir Sabara
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.v9i1.415

Abstract

Buton tar sand or commonly known as asbuton is a natural tar sand deposit found in Buton Island, Southeast Sulawesi. The reserve of asbuton is approximately 179.1 million tons with a hypothetical resource of oil amounting to 10,577,646,000 liters. Asbuton is potentially used as an alternative raw material for non-conventional oil. Non-conventional oil from asbuton could be used as a substitute to the depleted resources of conventional oil in Indonesia. Asbuton non-conventional oil could be prepared by extracted bitumen, a heavy hydrocarbon material in asbuton tar sand from its mineral. The bitumen then could be further processed to produce non-conventional oil. Various studies have been carried out to extract bitumen with various solvents. This study uses direct extraction and soxhlet extraction methods with n-hexane solvent to obtain the most optimum percentage of bitumen. Direct extraction method is done by varying the temperature (40, 45, 50, 55, 60oC) and the weight ratio of asphalt and n-hexane solvent (1:20; 1: 30; 1:40; 1:50). Based on the results of research that has been done, the highest percentage of bitumen yield is formed at 40oC and at a ratio of 1:20 that is 88.60% for the direct extraction method. The 1:40 ratio of soxhlet solvent extraction has the highest bitumen yield of 90.97%. After that, a characteristic analysis was carried out using FTIR with a strong absorbance in the area of 1423.47; 1033.85; 873.75; 709.80 cm-1 representing the C-H and C = H groups.
Struktur Komunitas Gastropoda pada Kawasan Mangrove Pantai Gerupuk Lombok Tengah: Community Structure Of Gastropods in The Mangrove Area Of Gerupuk Beach Central Lombok Hikmatul Hasanah; Agus Ramdani; Abdul Syukur
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.v9i1.419

Abstract

he purpose of this study was to determine the community structure and distribution pattern of gastropod in the mangrove area of Gerupuk Beach, Central Lombok. The field survey was conducted using the quadratic transect method and free collection in October-November 2022. The purposive random sampling was used in this study. The results showed there were 591 individuals Gastropod in all stations consisted of 4 species of Gastropod 7 families, namely Assimenia brevicula, Cassidula aurifelis, Cassidula nucleus, Littoraria carnifera, Littoraria angulifera, Littoraria scabra, Nerita undata, Cerithidea alata, Cerithidea quoyii, Telescopium Telescopium, Terebralia sulcata, Terebralia sp., Chicoreus capucinus and Nassarius reevanus. The highest abundance was found at station III with a value of 1.48 individuals per m2, where the highest abundance of gastropod species was Cerithidea alata. The diversity (H ') obtained from the three stations ranged from 1.476 to 1.996 which was categorized as medium level. Evenness index (E) from of 0.559-0.756 which were in the relatively even category. Furthermore, Domination index (C) of Gastropods range from 0.255-0.355 for low dominance. Gastropod distribution patterns in the Gerupuk Beach mangrove ecosystem are clustered and uniform. It is concluded that based on the biological indices the structure of the Gastropods community in the mangrove area of Gerupuk Beach it was in normal condition.
Gambaran Imunohistokimia Synaptophisin pada Neuron Otak Tikus Pasca Mengalami Cedera Otak Traumatik: Immunohistochemistry of Synaptophisin in Rat Brain Neurons After Traumatic Brain Injury Rohadi Rohadi; Bambang Priyanto; Lale Maulin Prihatina; Decky Aditya Zulkarnaen; Januarman Januarman; Bayu Putra Wibowo; Muzzaki Hasnan Ali; Gibran Ihza Sukma
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.v9i1.420

Abstract

TBI is mechanically followed by pathomechanisms that cause damage to surrounding neurons, such as cell and tissue necrosis, inflammation, cerebral edema, breakdown of the blood-brain barrier, and hyperthermia. The more severe the brain injury, the greater the impact on the inflammatory response. Therefore, this study aims to determine the histopathological description of edema in rat brain cells after TBI and to analyze the relationship between differences in trauma burden and histopathological features of brain cell inflammation, hematoma, and edema in mice after traumatic brain injury. This study uses an experimental observational-analytical research design. Sprague-Dawley mice were used as research subjects and divided into four cluster groups (and one control group) with varying trauma-loading interventions. The trauma loads given were 20 grams, 40 grams, 60 grams, and 80 grams. Following the trauma load application, the mice's brains were biopsied one hour after the intervention to observe histopathological features of inflammatory markers (synaptophysin) and brain cell edema. The data were then analyzed using the SPSS program. Twenty mice were included in this study. The results of the study showed that there was a mean load of 50 grams, and there is a mean synaptophysin percentage of 23.5%. There was a significant relationship between differences in trauma load and the percentage of post-TBI rat brain cell edema (p <0.001). There is a perfect and strong correlation between differences in trauma load and the percentage of synaptophysin (p=0.926). It was discovered that as the trauma load increased, there was a growing percentage of edema and inflammation in the histopathological features of the mice’s brains. There was a significant difference between the severity of trauma and the percentage of brain cell inflammation and edema one hour after brain injury in mice. The more severe the level of trauma given, the higher the percentage of inflammation and edema that occurs in rat brain cells. The result is especially notable since the inflammation and edema is found one hour within injury.
Efek Tipe Kelahiran Terhadap Estrus Post-Partum Induk Sapi Bali Akseptor Inseminasi Buatan : Birt Type Effect on Post-Partum Etrus of Bali Cow Acceptor of Artificial Insemination I Wayan Lanus Sumadiasa; Adji Santoso Dradjat; Lalu Ahmad Zaenuri; Rodiah Rodiah
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.v9i1.421

Abstract

Cases of dystocia is impact on delaying uterine involution, post-partum estrus and the next mating. Research has been carried out about type of birth process and its effect on post-partum estrus post-artificial insemination (AI) of Bali cows in Pujut District, Central Lombok Regency. The aim was to determine the effect of the type of birth process on post-partum estrus of cows. The research used descriptive method with the material were 40 Bali cows in 4 (four) villages, namely Pengengat, Teruwai, Mertak and Bangket Parak. The research variables were the type of birth process and post-partum estrus, as well as supporting variables such as the age of cow, body condition score (BCS), body weight, type of bull semen and days open. The data were statistically analyzed including the mean, standard deviation and percentage, followed by t-test. The results showed that 52.25% of Bali cows in Pujut District gave birth normally and 47.5% suffer light dystocia with birth assistance. The mean age of cows with dystocia was 29.53 ± 5.72 months by the BCS of 2.53, compared to 31.62 ± 5.61 months by the BCS of 2.81 in normal birth. The mean weight was 319.00 ± 29.72 kg compared to 342.81 ± 49.36 kg. The mean days open was 199.13 days compared to 195.67 days and post-partum estrus was 122.00 days compared to 105.00 days. In conclusion, the onset of post-partum estrus and days open in Bali cows that suffer light dystocia with birth assistance is longer than normal birth.
Kualitas Fisik dan Kimiawi Maggot BSF yang Dibudidaya Oleh Peternak Menggunakan Media Pakan yang Berbeda Dwi Kusuma Purnamasari; Syamsuhaidi Syamsuhaidi; Erwan Erwan; K.G. Wiryawan; Sumiati Sumiati; Moh. Taqiuddin; M.U. Utami; N.P.W.O. Ardyanti
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.v9i1.422

Abstract

This study aims to determine the physical and chemical quality of maggot cultivated by farmers on the island of Lombok using different feed media. The research was conducted in 2 tages, namely: Phase I. Observation of 5 locations of maggot farms on Lombok Island with a production scale of at least 5 kg per week. The parameters observed were the type of feed used, production scale, body weight and body length of maggot per head. Stage II. Analisis of the nutritional quality of feed and maggot media using the Proximate analysis method. Parameters observed were water content, ash content, crude protein, crude fat, and crude fiber. The data collected were tabulated and discussed descriptively. The results showed that there were 4 TPS locations and 1 quail farm location which was assisted with maggot cultivation with a maggot production scale of 7-350 kg per week. The lowest production scale is at the location of the quail farm using quail manure and the highest scale is at the TPS location Ds. Sengkol using kitchen waste as feed media, expired milk, coconut dregs, and banan stems. The protein content of the feed media that had been converted by maggot ranged from 4.51-24.64% and the maggot content produced ranged from 23.0-42.45%, the highest at quail Farm Puyung village which uses quail waste media. The conclusion of this study that the use of quail waste media as a feed medium resulted in the best quality of maggot.

Page 16 of 34 | Total Record : 335

 14   15   16   17   18 

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