cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Solikhatun
Contact Email
solikhatun@ugm.ac.id
Phone
+62331334293
Journal Mail Official
jid@unej.ac.id
Editorial Address
Jl. Kalimantan 37 Kampus Tegalboto Jember 68121 Telp. 62 331 334293 Fax. 62 331 330225
Location
Kab. jember,
Jawa timur
INDONESIA
Jurnal Ilmu Dasar
Published by Universitas Jember
ISSN : 24425613     EISSN : -     DOI : https://doi.org/10.19184/jid.v24i2.36657
Core Subject : Education, Engineering,
Control & Systems Engineering Mathematics
Jurnal ILMU DASAR (JID) is a national peer-reviewed and open access journal that publishes research papers encompasses all aspects of natural sciences including Mathematics, Physics, Chemistry and Biology. JID publishes 2 issues in 1 volume per year. First published, volume 1 issue 1, in January 2000 and avalaible in electronically since 2012 with ISSN 1411-5735 (Print) and avalaible in electronically since 2012 with ISSN 2442-5613 (online). Jurnal ILMU DASAR is accredited SINTA 3 by the Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia (Kemendibukristek) No. 152/E/KPT/2023 (September 25, 2023), Ministry of Research, Technology and Higher Education of the Republic of Indonesia (RISTEKDIKTI), No. 200/M/KPT/2020 (December. 23, 2020). All accepted manuscripts will be published worldwide JID has been indexed in DOAJ, Dimension, OCLC WorldCat, PKP Index, Crossref, Google Scholar, Base, Garuda, and OneSearch. JID have been collaborated in KOBI-ID (Konsorsium Biologi Indonesia) and HKI (Himpunan Kimia Indonesia) since 2017.
Arjuna Subject : Matematika - Kontrol dan Optimasi
Articles 414 Documents
 38   39   40   41   42 
Efficacy of Ethanol Extract of Sambiloto (Andrographis paniculata) Against Pneumonia-Causing Klebsiella pneumoniae Sulistiyawati, Indah; Falah, Muhammad; Nurasih, Ari Dwi
Jurnal ILMU DASAR Vol 26 No 1 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i1.36846

Abstract

Klebsiella pneumoniae is one of the most common pathogens in nosocomial respiratory infections. Antibiotics are often used for the treatment of K. pneumoniae infections. Increased bacterial resistance to antibiotics is closely related to the success rate of infectious disease therapy. The use of plants as phytopharmacology is currently an alternative treatment. Some medicinal plants that have antibacterial and immunomodulatory activity are Sambiloto (Andrographis paniculata) with an active compound called andrographol. The purpose of this study was to provide a solution to the problem above by developing a phytopharmaceutical using bitter extract to inhibit the growth of K. pneumoniae bacteria. Two sputum samples from the laboratory confirmed Covid-19 patients with pneumonia infection at the Hospital. The sambiloto was extracted by using 96% ethanol. The extract was further analyzed for its antimicrobial activity and phytochemical compounds. There were two K. pneumoniae isolates, namely KpRNG and KpTRI. The active compounds were saponin and steroids. The antimicrobial activity of the ginger extract was measured with different concentrations of 25%, 50%, 75%, and 100%. Its inhibitory zone against K. pneumoniae was ranging from 5.8 to 7 mm or had a moderate inhibition category.
Degraded Forest Evaluation Using Vegetation Indices at Bandealit Resort, Meru Betiri National Park Mulyadi, Budi Putra; Sulistiyowati, Hari; Wimbaningrum, Retno
Jurnal ILMU DASAR Vol 26 No 1 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i1.34773

Abstract

The forest degradation and deforestation was widely occurred in Indonesia and Meru Betiri National Park is one of the area with illegal loggings threats. Bandealit Resort as one of the resort in Meru Betiri National Park was reported as the area with high activity of illegal loggings specifically in 2020. Based on this information, this research study aims to evaluate the degraded level of the forests using Normalized Difference Vegetation Index and Enhanced Vegetation Index (NDVI and EVI) so it can be managed and evaluated in the future. This research use direct and indirect observation methods in three areas with different damage levels. Direct observation was done by counting the number of species and the stands trees, while the indirect observation was analyzing the Landsat 8 Imagery in 2020, 2021 and 2022. The results showed that the A area had the lowest density with only 45 remaining trees than two others with more than 150 trees. The greenness levels imply the quality level of tree stand density, as higher the tree stand density, the higher the greenness. NDVI and EVI showed that A area had the range from low greenness (sparse density) to high greenness (medium density) than two others area had the higher greenness and densities.
Effect of Nitrogen Composition on Band Gap Energy and Photocatalytic Activity of TiO2-N/Zeolite Composite Al Islam, Hanif Mufti; Sutisna, Sutisna; Rohman, Lutfi
Jurnal ILMU DASAR Vol 26 No 1 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i1.51887

Abstract

In this study, the application and performance of TiO2-N/Zeolite composites for MB photodegradation under UV irradiation have been reviewed. To improve the removal performance, the TiO2-N/Zeolite composite was varied based on the concentration ratio of urea to TiO2, where urea is a precursor of nitrogen. UV-Vis DRS tests were also carried out to compare and evaluate differences in band gap energy for each variant, analysis of degradation results and MB removal mechanisms by TiO2-N/Zeolite composites are described in this study. The aim of this research is to determine the effect of the urea to TiO2 concentration ratio (urea:TiO2), on the photocatalytic activity of the TiO2-N/Zeolite composite and also its physical characteristics, namely band gap energy. Thus, as a comparison, TiO2 and TiO2-N were also tested for photocatalytic activity and band gap energy physical characteristics. The conclusion obtained from this research is that the smaller the nitrogen composition in the TiO2-N/Zeolite composite, the greater the photocatalytic activity capability in degrading MB, in this case the TiO2-N/Zeolite (1.5) sample has the best photocatalytic activity. The next conclusion is that the higher the nitrogen composition in the TiO2-N/Zeolite composite, the smaller the band gap energy.
The Structure of p-fixed Autonilpotent Finite Groups Hosseini, Shima
Jurnal ILMU DASAR Vol 26 No 1 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i1.42866

Abstract

The concept of autonilpotent groups was introduced by Moghaddam and Parvaneh in 2010 which is related to concepts of absolute centre and autocommutator subgroups that were first proposed by Hegarty in 1994 and 1997 respectively. In the present article we give some useful properties of such groups. In the first section, we define a subgroup GK_n for a given group G, as GK_n=〈 [g ,α^n ] ┤| g∈ G,α∈Aut(G) 〉 which is characteristic subgroup of G . In this section, based on the induction method, we obtain the structure of GK_n as 〈 [ g ,α ]^n ┤|g∈ G,α∈ Aut(G) 〉, 〈 [ g ,α ]^n [g,α,α]^(n(n-1)/2) ┤|g∈ G,α∈ Aut(G) 〉 and 〈 (∏_(i=0)^(n-1)▒〖[g,α] [g,α,α]^i) [g,α,α,α]^((n(n-1)(n-2))/6) 〗┤|g∈ G,α∈ Aut(G) 〉 in autonilpotent groups of classes 2, 3 and 4 respectively. In second section, n-fixed group is introduced as a group G with GK_n=1 for some n∈N. Then among other results of n-fixed groups, we characterize some n-fixed groups. Based on the role of the absolute centre subgroup in the structure of the group, we prove a non-trivial finite group G is isomorphic to Z_2 iff G is 1-fixed group also we show that abelian group G is p -fixed autonilpotent group iff it is isomorphic to G≅ C_(2^k ) where 1≤ k≤ 3
Cover JID Volume 26 No 1 (2025) JID, Jurnal
Jurnal ILMU DASAR Vol 26 No 1 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Waste Paper Hydrolysis Analysis with Sulfuric Acid Catalyst using Response Surface Methodology Panjaitan, Jabosar Ronggur Hamonangan; Octaviani, Conny; Sinabutar, Renata Margaretta
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.46749

Abstract

Paper waste can cause environmental damage, so paper waste processing must be carried out. Paper waste which is a lignocellulosic compound can be processed with acid hydrolysis process to produce cellulose degradation products. In this research, waste paper hydrolysis was carried out using sulfuric acid with response surface methodology (RSM) optimization which the variables studied were mixing speed, time and S/L ratio. Based on the results of ANOVA test, it was known that mixing speed, time and solid liquid (S/L) ratio did not have a significant influence on %conversion. From the comparison of the independent variables, the mixing speed and time showed significantly influence %conversion compared to the S/L ratio. Higher %conversion was obtained from lower value of mixing speed, time and S/L ratio. In this study, 65% conversion was produced under operating conditions of 175 rpm stirring speed, 30 minutes reaction time, and 1:15 S/L ratio.
Metabolite Profile of arabica Coffee Cascara from Typica Cultivar in Bandung with Different Drying Processes Sururi, Zaki Fahreza; Diana, Sariwulan; Kusdianti, Kusdianti
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.52756

Abstract

Arabica coffee bean (Coffea arabica L.) is Indonesia's leading commodity, with Bandung Regency as the largest producer in West Java. The exocarp and mesocarp of coffee fruits known as cascara have potential health benefits as a beverage. Cascara is usually dried by direct sunlight before consumption, but this process is prone to weather disturbances and contamination. The use of dehydrators is more controlled to maintain metabolite content, but there has been no research on cascara from coffee cultivars in Bandung Regency dried by this method. This study aims to obtain the metabolite profile of Typica arabica coffee cultivar cascara dried using direct sun and dehydrator. The cascara samples were taken from Gunung Puntang Coffee Plantation, Bandung Regency, and extracted using maceration method with 70% ethanol p.a. solvent. The metabolite content was analyzed by Gas Chromatography-Mass Spectrometry (GC-MS), which specifically detects volatile metabolites. Non-volatile compounds were not within the scope of this study. The results showed that direct sun-dried cascara had 6 metabolites, while dehydrator-dried had 15 metabolites. Both samples were dominated by caffeine (sun-dried cascara: 46.61%, dehydrator cascara: 24.44%). Five metabolites were found in both samples, with 1 unique metabolite in solar cascara and 10 unique metabolites in dehydrator cascara. This study showed differences in metabolite content in Typica cultivar cascara with different drying methods.
Crops Classification in Fragmented Agricultural Land Using Integrated Radar and Optical Remote Sensing Satellite Data Darmawan, Sukma Adi; Cahyono, Bowo Eko; Suprianto, Agus; Umniyah, Inas Alfiyatul
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53691

Abstract

This study aims to classify crops on fragmented agricultural land by integrating radar (Sentinel-1) and optical (Sentinel-2) satellite remote sensing data. The research responds to the pressing issue of decreasing agricultural land in Jember Regency due to land conversion, which threatens food security. Feature-level fusion is applied to combine spectral indices (NDVI, NDWI, NDBI) from Sentinel-2 and radar backscatter characteristics (VV, VH) from Sentinel-1. Classification was performed using the Random Forest algorithm in the Google Earth Engine (GEE) platform. The results showed that the combination of both datasets provided high overall accuracy (81.58%) in classifying eight land cover types including agricultural crops such as paddy, corn, sugarcane, and citrus. This integration enables better monitoring of complex agricultural landscapes, offering a practical tool for sustainable land management.
Immune Response of Nipah Worms (Namalycastis rhodochorde) Following Injection of Pseudonocardia spp.: Indonesia Wiranata, Aufar Ismi; Dea, Uray; Nabila, Vioni Talitha; Putri, Fiqih Fazira; Wibowo, Raynata Zwietenia; Yanti, Ari Hepi
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53694

Abstract

The nipah worm (Namalycastis rhodochorde) is a Polychaete species found in the nipah (Nypa sp.) mangrove ecosystem of West Kalimantan. Since its identification in 2007, research on this species has been limited. Nipah worms play a crucial role in trophic levels, serving as a food source for various aquatic animals due to their high nutritional content. Although attempts have been made to cultivate nipah worms, these efforts are still hindered by disease outbreaks, one of which is caused by a bacteria. This study aims to investigate the immune response of nipah worms following induction with Pseudonocardia spp. isolated from nipah fronds. The research methodology included the preparation of tools and materials, acclimation of nipah worms, reculturing of Pseudonocardia spp. and the creation of test suspensions, as well as the calculation of the total and differential counts of coelomocytes before and after bacterial induction. The results indicated an increase in the number of several types of coelomocytes in nipah worms, specifically type I by 53,2%, type III by 54%, type IV by 56,2%, and type V by 61,4% after induction with Pseudonocardia spp.
Echinodermata Community Structure in Seagrass Ecosystem at Sijile Beach Baluran National Park Amero, Movhalky Argeswara Delta Cancera; Wimbaningrum, Retno; Sulistiyowati, Hari
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53695

Abstract

Seagrass ecosystems represent one of the most important coastal ecosystems due to their crucial ecological role in maintaining marine environmental balance.This study aims to identify and analyze the community structure of Echinodermata from the classes Ophiuroidea, Echinoidea, and Holothuroidea in the seagrass ecosystem of Sijile Beach, Baluran National Park. Sampling was conducted using a systematic transect-plot method across 10 transects and a total of 100 plots. The results revealed seven Echinodermata species, with Ophiocoma scolopendrina being the most dominant (6.15 ind/m²). The Shannon-Wiener diversity index (H') was 0.98, indicating low species diversity. This low diversity is attributed to the dominance of specific species and uneven individual distribution. Although seagrass serves as a crucial habitat supporting Echinodermata survival, environmental conditions and species-specific adaptations play key roles in shaping the community structure. These findings highlight the importance of ecological studies for the conservation and management of coastal resources.

Page 41 of 42 | Total Record : 414

 38   39   40   41   42 

Filter by Year

2007 2025


Reset
Filter By Issues
All Issue Vol. 26 No. 2 (2025) Vol 26 No 1 (2025) Vol 25 No 2 (2024) Vol 25 No 1 (2024) Vol 24 No 2 (2023) Vol 24 No 1 (2023) Vol 23 No 2 (2022) Vol 23 No 1 (2022) Vol 22 No 2 (2021) Vol 22 No 1 (2021) Vol 21 No 2 (2020) Vol 21 No 1 (2020) Vol 20 No 2 (2019) Vol 20 No 1 (2019) Vol 19 No 2 (2018) Vol 19 No 1 (2018) Vol 18 No 2 (2017) Vol 18 No 1 (2017) Vol 17 No 2 (2016) Vol 17 No 1 (2016) Vol 16 No 2 (2015) Vol 16 No 1 (2015) Vol 15 No 2 (2014) Vol 15 No 1 (2014) Vol 14 No 2 (2013) Vol 14 No 1 (2013) Vol 13 No 1 (2012) Vol 12 No 2 (2011) Vol 12 No 1 (2011) Vol 11 No 2 (2010) Vol 11 No 1 (2010) Vol 10 No 2 (2009) Vol 10 No 1 (2009) Vol 9 No 2 (2008) Vol 9 No 1 (2008) Vol 8 No 2 (2007) Vol 8 No 1 (2007) More Issue