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 415 Documents
 36   37   38   39   40 
Characterization of The essential oil of Eucalyptus Leaves (Melaleuca leucadendra) from Pontianak City and Its Activity Against Streptococcus mutans Wibowo, Muhamad Agus; Rendi, R.; Warsida, W.; Ardiningsih, Puji; Jayuska, Afghani
Jurnal ILMU DASAR Vol 24 No 2 (2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v24i2.33592

Abstract

Eucalyptus plants can grow in the city of Pontianak, which is an area with peat soil, although in fact, this plant can grow well in swamps, sandy areas, and mangroves. The difference in the location where eucalyptus grows, causes a difference in the composition of the compounds contained in it, especially 1.8 cineol which is a potential compound to prevent dental caries. This study aims to isolate and characterize the essential oil of eucalyptus leaves from the city of Pontianak and determine its activity in inhibiting the S. mutans bacteria. This research was carried out in two stages: isolating, characterizing, and determining the chemical content of eucalyptus leaf essential oil from Pontianak using Gas Chromatography-Mass Spectroscopy (GC-MS). The second stage was to test the antibacterial activity in inhibiting the growth of S. mutans bacteria using the well diffusion method. The results of the isolation of essential oils obtained a yield of 0.58% (w/w) with a specific gravity characteristic of 0.9288 g/mL, a clear greenish-yellow color, and a characteristic smell of eucalyptus oil, and is soluble in 70% ethanol. GC-MS analysis showed that there were 29 compounds, with the main compound being 1.8 cineol as much as 55.71%. The results of the antibacterial activity test against S. mutans showed that the samples at all test doses were antibacteria with inhibition values of 9.03 mm (1.393 mg/well), 6.76 mm (0.697 mg/well), 6.53 mm (0.348 mg/well), and 5.39 mm (0.174 mg/well). The follow-up test showed that at all doses of the essential oil, it was bacteriostatic against S. mutans bacteria. From the study results, it can be concluded that Pontianak eucalyptus oil meets the standards of SNI 06-3954-2006 with 1.8 cineol as the main compound and has antibacteria properties against S. mutans.
Analysis of SIR Mathematical Model for Malaria Disease: A Study in Assam, India Devi, Rima; Choudhury, Balendra Kumar Dev
Jurnal ILMU DASAR Vol 24 No 2 (2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v24i2.38917

Abstract

The global outbreak of covid-19 pandemic is still affecting people around the globe very badly. Before the covid-19 pandemic outbreak, several research works were done for the detection and prevention of various infectious diseases using different mathematical modeling. Implementing mathematical modeling to resolve problems in Biology and physiology is generally called Mathematical Biology, an extremely interdisciplinary area. The applications of mathematical modeling in the analysis of infectious diseases help to concentrate on the necessary processes associated with forming the infectious disease epidemiology and specifications estimation. The compartmental mathematical model can be either SI, SIS, SIR, SIRS, or SEIR where S, I, R, and E denote susceptible, infected, recovered, and exposed respectively. Malaria is an infectious disease that has a large economic and health impact on society. This study aims to predict the estimation of suspected, infected and recovered people using the SIR mathematical model of the Barama area of Baksa District in Assam, India. Here we analyzed the Basic Reproductive Ratio of the SIR model for malaria disease and examined if malaria is epidemic or endemic in that area.
Cover JID Volume 24 No 2 (2023) ILMU DASAR, Jurnal
Jurnal ILMU DASAR Vol 24 No 2 (2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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

Abstract

Variations of Coconut Shell, Rice Husk, and Bagasse as an Alternative of Briquettes Materials Sari, Kartika; Anisyah, Anisyah; Toruan, Parmin Lumban; Setiawan, Andi Arif
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.33864

Abstract

The current energy condition is getting thinner meanwhile people's daily lives still use a lot of energy derived from fossil fuels so that its use is increasing with limited availability. An alternative to reduce the use of fossil energy is by utilizing waste biomass as an energy source one of them is briquetts. This study aims to analyze the characteristics of briquettes from a variety of briquette mixtures made from coconut shells, rice husks, and bagasse. The method used is survey and experimental. The survey of sampling coconut shells was carried out in the Seberang Ulu I area, rice husks in the Pegayut area, and bagasse was obtained at the ice cane traders in the Seberang Ulu I area. The data obtained were presented in graphical form and analyzed descriptively. The results obtained are the water content in the variation of the combination of briquette-making materials ranging from 4.23 - 5.13%, ash content of 7.6 - 7.86%, the density value obtained is 0.55 - 0.59 g/cm3, the compressive strength value is 25.67 - 37.33 kg/cm2, and the calorific value is 4756 - 4865 cal/gr. The results showed there is not significant differences in moisture content, ash content, and compressive strength, while the density and calorific value showed significant differences.
Potential of Ecoenzymes and N2 Nanobubbles on the Growth of Phalaenopsis sp. Orchid at the Acclimatization Stage Syafitri, Fitria Indah; Rahayu, Tintrim; Jayanti, Gatra Ervi
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.40575

Abstract

Growth is a quantitative change during one plant’s life cycle and is irreversible.withaddition An in crease the volume or dry weight of plants or other organs is due to the adding, of new structural elements. Phalaenopsis (moth orchid) is a genus of orchids appeal. The diversity of colors, shapes, and textures, as well as its aroma, make Phalaenopsis orchids one of the charming flowers of Indonesia. Ecoenzyme is a solution of complex organic substances produced from the fermentation of organic residues, sugar, and water. Nanobubbles (NBs) are an example of nanotechnology. NBs have a diameter of 1-100 nm and are nanoscopic gas bubbles in a solution or water that can change the characteristics of water and are stable. This study aims to determine the potential of giving Ecoenzyme and NBs N2 on the growth of Phalaenopsis orchids during the acclimatization stage. This research was conducted from October to December 2022 at the Orchidology and Nursery Laboratory, Islamic University of Malang. This study used an experimental method with a completely randomized design (CRD) with 10 treatments, namely 0 mL/L (control), 1 mL/L Ecoenzyme, 2 mL/L Ecoenzyme, 3 mL/L Ecoenzyme, 4 mL/L Ecoenzyme, 4 combination NBs N2 and Ecoenzymes, and 5 mL NBs N2 with 3 replications, making a total of 30 treatment units. The research parameters included the number of leaves, leaf length, number of roots, root length, plant height, fresh weight, and plant dry weight. The results of this study showed that the treatment of 3 mL/L Ecoenzyme showed potential in increasing the number of leaves by 4 pieces: at the same time the optimal concentration of the combination of Ecoenzyme and NBs was 2 mL/L plus 5 mL NBs N2 in increasing the number of roots by 10 pieces, and the optimal concentration of NBs was 5 mL in increasing the root length by 7.07 cm, plant height by 17.10 cm leaf. length, plant weight by 4.16 g and dry weight by 0.85 g in Phalaenopsis orchids.
Cover JID Volume 25 No 1 (2024) ILMU DASAR, Jurnal
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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

Abstract

Antioxidant and Cytotoxic Properties of Extract from Soil Bacteria Isolated from Muna Island, Southeast Sulawesi Priyanto, Jepri Agung; Hening, Egiyanti Nur Widhia; Permatasari, Vera; Prastya, Muhammad Eka; Hasidu, La Ode Abdul Fajar; Primahana, Gian
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.39244

Abstract

Soil bacteria could be the promising source of secondary metabolites with diverse pharmacological activities. Bacteria coded as P1 and M7 were isolated from soil obtained from Muna Island, Southeast Sulawesi. This research aimed to evaluate the antioxidant activity, cytotoxic property, and identify the chemical profile of the extract derived from soil bacteria P1 and M7. Based on 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, extract derived from P1 isolate was moderately active against ABTS free radical with IC50 of 126.22±10.82 µg/mL, and less active on DPPH (IC50: 721.95±16.59 µg/mL), while M7 extract was less active towards DPPH and ABTS. Interestingly, these extracts in the concentration of 100 µg/mL were cytotoxic to breast cancer cell (MCF-7), as tested by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. MCF-7 viability was decreased up to 69.83±1.46 % and 61.49±0.76 % after treated with P1 and M7 extract, respectively. The extracts were also induced membrane disruption and apoptosis of MCF-7 cells. The extracts contained phenol (9.52±0.22 and 10.41±0.09 mg EAG/g extract, for P1 and M7, respectively) and flavonoids (9.16±0.16 and 9.29±0.24 mg EQ/g extract, for P1 and M7, respectively). According to Gas Chromatography Mass Spectrometry (GC-MS) analysis, Pyrrolo[1,2-a] pyrazine-1,4-dione, hexahydro-3-(2-methylpropyl) that previously well known as antioxidant and cytotoxic compounds, were found in the M7 and P1 extract. This compound may play a vital role in the radical scavenging and cytotoxic properties of P1 and M7 extracts. The results of this study indicate that P1 and M7 extracts could be the potential source of antioxidant and cytotoxic compounds and need to be further developed for pharmaceutical use.
The Effect of the Type of Planting Media and The Addition of O2 Nanobubbles on the Growth of Dendrobium burana Green × Ong Ang Ai Boon Orchid Plantlets in Vitro Purnamasari, Viska; Rahayu, Tintrim; Jayanti, Gatra Ervi; Agisimanto, Dita
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.41376

Abstract

Dendrobium orchids come in a variety of colors, shapes, and beauty that are in great demand. The process of growing orchids requires special handling of an appropriate growing environment, such as proper planting media and nutrients that can stimulate orchid growth. This type of thin liquid film media is the use of liquid media with an immersion system while vermiculite and perlite media have almost the same properties. However, vermiculite has a higher water absorption capacity than perlite. Nanobubbles are bubbles with 1-100 nm that can live more stably in water. This study aims to influence the type of media and the addition of Nanobubbles O2 on the growth of Dendrobium burana Green × Ong Ang Ai Boon orchid plantlets. This research was carried out from November to December 2022 at the PT. Java Indo Arjuna Singosari, Malang. This study used a completely randomized design (CRD) with 10 treatments, namely solid MS, gaviota solid, thin liquid film, thin liquid film + NBs O2, vermiculite, vermiculite + NBs O2, perlite, perlite + NBs O2, vermiculite + Perlite, vermiculite + perlite + NBs O2 with 4 replications. The data were analyzed descriptively and the Manova test. The results showed that the vermiculite + NBs O2 treatment had the potential to increase the length of plantlets by 13.80 mm, the wet weight of plantlets by 0.30 g, the percentage of live plantlets by 100% whereas in the vermiculite + perlite treatment has the potential for the first root growth to appear, namely 5 HST. The vermiculite treatment had the potential to increase the highest number of leaves by 5 leaves, whereas in the leaf color treatment the solid MS treatment had a more intense green color.
Filtered and Unfiltered Cigarette Effect on White Rats Male Reproduction (Rattus norvegicus L.) Budiantoro, Agung; Farhanah, Nurul Amalia
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.33967

Abstract

Cigarette smoke can cause various health problems, one of which is a decrease in fertility in males. The purpose of this study was to determine the effect of smoke exposure between with and without filter hand-rolled kretek cigarettes (SKT) and white cigarettes on white rats male reproduction: sperm quality in the form of sperm motility and viability, also the structure of seminiferous tubules. This study used 5 treatment groups (KP), namely controls not given exposure to cigarette smoke (KP0), exposure to unfiltered kretek cigarette smoke (KP1), exposure to filtered kretek cigarettes (KP2), exposure to unfiltered white cigarette smoke (KP3) and exposure to secondhand smoke. filtered white cigarettes (KP4) with treatment placement arrangement in a Completely Randomized Design (CRD) and if there is a significant difference, a Duncan Multiple Range Test (DMRT) is carried out. The results obtained on sperm quality, namely sperm motility and viability, decreased. Good quality at KP0 then the quality decreases successively starting from KP1, KP2, KP3 and KP4. The results on histpathological observations of the seminiferous tubules, there were no pathological changes found in all treatments. In contrast to the histopathology of seminiferous tubules, the number of spermatogenic cells showed a significant difference between treatments with the least average spermatogenic count and a decrease in the number of cells from spermatogonia cells to spermatid cells, namely in the treatment group exposure to filtered white cigarette smoke (KP4). Overall, the exposure that caused the most severe impact on all measured parameters was in the treatment group of filtered white cigarette smoke (KP4).
Growth Pattern and Degradation Activity of Caffeine-degrading Bacteria Consortium Suksma, Nadhea Ayu; Utarti, Esti; Arimurti, Sattya
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.32609

Abstract

Caffeine-degrading bacteria can be used as agents to degrade caffeine, thereby reducing the concentration of caffeine in organic waste. The decomposition process is carried out by a single bacterium or a consortium of bacteria. Caffeine-degrading bacteria from Sempol, Bondowoso, namely Acinetobacter gerneri KAFS 47, Paracoccus denitrificans KAFS 16 and Pseudomonas plecoglossicida KAFS 34, could be used as a bacterial consortium to promote caffeine degradation. The aim of this study was to analyze associations between caffeine-degrading bacteria isolates, bacterial resistance to antibiotics, growth patterns, and caffeine degradation of a consortium of caffeine-degrading bacteria, and the correlation of bacterial growth with caffeine degradation. The research method used is an analysis of the association between isolates, the development of bacterial consortium growth patterns, and their analysis based on antibiotic resistance, patterning of caffeine degradation, and correlation test (Pearson) of bacterial growth with caffeine degradation. The result of the association test between bacteria showed that the three bacteria had the potential to be used as a consortium of caffeine-degrading bacteria. A. Gerneri, P. denitrificans, and P. plecoglossicida were resistant to the antibiotic cefixime (100 ppm), erythromycin (50 ppm), lincomycin (50 ppm), metronidazole (50 ppm), and sanprima (50 ppm). The growth of the bacterial consortium (54.779 CFU/mL) was higher than that of P. plecoglossicida (49.277 CFU/mL) and lower than that of A. gerneri (93.481 CFU/mL) and P. denitrificans (84.940 CFU/mL) in incubation time of 4 days. However, the consortium of bacteria and P. plecoglossicida were able to degrade caffeine 24 hours faster (3 days) than the other two single isolates (4 days) to degrade 2.5 g/L caffeine in media to 0%. Bacterial growth due to caffeine degradation has a perfect correlation value (>0. 950) and is negative.

Page 38 of 42 | Total Record : 415

 36   37   38   39   40 

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