Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Jurnal Ilmu Dasar

JID
Website

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

5 6 7 8 9

One Dimension Model Based Filter for Separation of Time-lapse Microgravity Anomaly Suhayat Minardi; Teguh Ardianto
Jurnal ILMU DASAR Vol 16 No 1 (2015)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v16i1.1055

The research has a goal to develop a model-based filter to separate the time lapse microgravity anomali caused by the 3 pieces of the source of anomalies with different depths. The activities which included in this research are: geological modeling, calculation of time lapse microgravity responses caused by several sources, designing of digital model based filter, application of the filter to separate synthetic time lapse microgravity anomali data, and performance test of the filter. Designed model is multi aquifer sistem with homogeny isotropic properties at different depth. Equipment of this research is a unit computer with MATLAB Version 7.11.0.584 (R2010b) and Microsoft Excel 2007 software. The designed filter can separate time lapse microgravity anomali based on its sources successfully with error less than 5%.Keywords: Filter, synthetic, time lapse microgravity anomaly

The Influence of Abiotic Factors on The Diversity and Abudance of Mangrove Crabs (Scylla spp.) in Blok Bedul Alas Purwo National Park Mangrove Forest Rina Sugiarti Dwi Gita; Sudarmadji Sudarmadji; Joko Waluyo
Jurnal ILMU DASAR Vol 16 No 2 (2015)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

The purpose of this study was to determine the diversity, abundance and abiotic factors influence the diversity and abundance of mud crab (Scylla spp.) In mangrove forests Blok Bedul Alas Purwo National Park. This research method uses descriptive quantitative method. Diversity is calculated by using the formula of Shannon Wiener, mangrove crab abundance is calculated using the formula abundance Kreb whereas the method of analysis using simple linear regression. The data used in this research is data such as the number and type of biotic mud crabs and data abiotic form of measurement of temperature, pH, salinity, substrate type, and the tide. This study shows the results include mangrove crab species diversity index of every observation stations in the mangrove forests Blok Bedul Alas Purwo National Park is H '= 0.315 showing that the level of diversity in every station is low. The abundance of mud crabs in the mangrove forests Blok Bedul Alas Purwo National Park is 0.0011 individuals / m² which showed that the level of abundance at relatively low research station. Results of the analysis of the influence of abiotic factors on the diversity and abundance of mud crabs in mangrove forests Blok Bedul National Park Alas Purwo not significant (p> 0.05) the diversity and abundance of mangrove crab. Keywords : abiotic factors , abundance , diversity , mud crab , regression

Measurement System of Sugar Content in Liquid Media using Computerized Photodiode Sensor Misto Misto; Tri Mulyono; Alex Alex
Jurnal ILMU DASAR Vol 17 No 1 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

It has been made an electronic system for measurement of sugar cane in solution media. This system uses a pin photodiode as a sensor, laser source, optical fiber, an operational amplifier (Op-Amp), analog to digital converter (ADC) of the Arduino, and computers. The main operation of the measurement system is done by the sensor and controlled by computer. The the photodiode sensor sends a signal to a signal processing unit (op-amp) and converted to a digital signal by the ADC. The digital signal is then forwarded for processing and display (computer). We Concluded that the system working well because of the sugar content information can be simultaneously displayed on the monitor .Keywords: sugar content, pin photodiode, computer

The Relationship between Portunidae Diversity and Mangrove Density at Popongan Coastal Baluran National Park, East Java Indonesia Dewi, Yuni Kartika; Purnomo, Hari; Sudarmadji, Sudarmadji
Jurnal ILMU DASAR Vol 18 No 1 (2017)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

This research was conducted in the mangrove forest of Popongan beach at Baluran National Park, East Java. The aim of this research was to determine the relationship between mangrove density and Portunidae diversity in mangrove forest at Popongan beach. Line transect method was used in this research. There are three transects consist of 17 plots, each plot sized 20m x 20m. The data analysis were done by using Person correlation and linear regression R Program. The results showed p-value 0,003, it means there is relationship between Portunidae diversity and the mangrove density. The temperature and tide showed p-value < 0,005, that means the abiotic factors affect Portunidae diversity in mangrove. The Portunidae diversity at mangrove forest of Popongan beach is relatively low (H’value 0,152). There were five species was found, there were Charybdis (Charybdis) miles, Podhopthalmus vigil, Portunuspelagicus,Scyllaserrata,and Thalamita crenata. The dominant species in this mangrove forest is Thalamita crenata. The composition of mangrove forest vegetation were Rhizophora apiculata, Ceriops tagal, Lumnitzera racemosa, Rhizophora stylosa, Sonneratia alba, Bruguiera gymnorrhiza, Pemphis acidula, dan Xylocarpus moluccensis. The dominant vegetation in this mangrove forest is Rhizophora apiculata.

Simple Design Flow Analysis System for Determination of Iron by Spectrophotometric method Wiwin Setiani; Tri Mulyono; Asnawati Asnawati
Jurnal ILMU DASAR Vol 16 No 2 (2015)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

The purpose of this research is to make a series of analyzes using a flow system with a bottle Marriote as pump and spectrophotometric method for determining the content of iron in water samples. Determination of iron by this method used 1,10-fenantrolin complexing or 2,2-bipyridyl. In this method, Fe3+ is reduced to Fe2+ prior complexed with iron to form a specific color and then flowed it through a marriote bottle next to the spectrophotometer detector. The average flow rate of the liquid in the bottle Marriote amounted to 0.037 mL / sec. Limit detection obtained in the batch is 0.00017 ppm and 0.00023 ppm in simple flow systems analysis methods. Sensitivity obtained in the batch method is 0.027 and the simple flow system analysis method is 0.035. Flow rate precision values are expressed Marriote bottle with Kv values <5%. Values accuracy expreced percenting of recovery was 99% in the batch method, whereas the simple flow system analysis method was 98.5%. Results of t-test analysts suggest that iron determination using flow systems analysis (FIA) with the replacement pump bottle Marriote not differ significantly from the results obtained with the batch system. Keywords: batch method, bottle Marriote, Flow Injection Analysis, spectrofotometry

Utilization of Sludge from Sidoarjo for Synthesis of Microball Photocatalist of Fe2O3 zeolit-chitosan as Fermented Soybean Waste-Degrading Agent Putri, Erlaningtias Hutami Ardana; Ratnasari, Dwi Fungky; Harumsari, Anugerah Dewi; Lestari, Vivid Ayu; Wardhani, Sri
Jurnal ILMU DASAR Vol 17 No 2 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

The sludge from sidoarjo have high Fe2O3 content of about 62,19%. This content have potential to prepare as photocatalyst for degraded fermented soybean waste by support sunlight. Synthesis of Fe2O3 zeolit-chitosan photocatalyst was carried out by impregnation into zeolite. Adding chitosan into the mixture of Fe2O3 zeolite then cast to be granules. Characterization of photocatalyst obtained using spectrophotometer IR, XRD, and DRS. Microball photocatalyst of Fe2O3 zeolit-chitosan with variation of pH 4, 6, and 8 then were done test of degradation performance by sunlight during 4 hours. As the result, the optimum pH of photocatalyast via COD test is pH 8. The higher base of photocatalyst, decreasing of degradation is higher.Keywords: degradation, Fe2O3, fermented soybean waste, sludge.

The Odd Harmonious Labeling on Variation of the Double Quadrilateral Windmill Graphs Firmansah, Fery
Jurnal ILMU DASAR Vol 18 No 2 (2017)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

A Graphis calledif it hasvertices and edqes. The graphis said to be an odd harmonious if there exists an injectionsuch that induced mappingis a bijection and is said to be an odd harmonious labeling of. In this paper, we construct the odd harmonious labeling on variation of the double quadrilateral windmill graph with . Moreover, we also give odd harmonious labeling construction for generalized variation of the double quadrilateral windmill graph withand . Keywords: Odd harmonious labeling, variation, double quadrilteral, windmill graph.

Effect of Silica Composition from Rice Husk Ash on The Performace of Absorbing Electromagnetic Wave on Composite of Unsaturated Polyester Resins/Silica Fauzy, Rizky; Adi, Wisnu Ari; Taryana, Yana; Yusmaniar, Y.
Jurnal ILMU DASAR Vol 19 No 1 (2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

This study aim is to know the effect of silica composition on the absorption of electromagnetic waves in the composite of unsaturated polyester resins (UPR)/silica. Silica raw materials have been synthesized from the results of rice husk ash extraction. The results of the analysis phase and elementary respective using X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) show that the extraction of silica has an amorphous phase with a high purity. This silica powders are filler material acts as an electromagnetic waves absorber material and combined with the UPR as a matrix to form a composite. Silica powder varied with several compositions in this composite. The observation of scanning electron microscope (SEM) shows that the silica particles have been distributed evenly in the UPR matrix. Meanwhile the results of testing the absorption of electromagnetic waves at frequency range of 8 GHz - 12 GHz using a vector network analyzer (VNA) show that the addition of silica composition have significant effect on the absorption of electromagnetic waves. The more the silica content in the UPR matrix causes the absorption of electromagnetic waves more increasing. It was concluded that the presence of silica can improve the absorption performance of electromagnetic waves in composite UPR/silica. Keywords: rice husk ash, silica, UPR, composites, electromagnetic wave absorber

The Development of Web-based Graphical User Interface for Learning and Fitting Generalized Estimating Equation with Spline Smoothers Tirta, Made; Anggraeni, Dian
Jurnal ILMU DASAR Vol 19 No 1 (2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Statistical modeling (regression analyses) have been growing rapidly into various directions to accommodate various data conditions. For longitudinal or repeated measures data, one of the suitable models is GEE (Generalized Estimating Equation). In practice, to do complex modeling such as GEE, the use of statistical software is necessary and it is available on free open source software R. However, GEE modeling on R can only be access through command line interface (CLI), and most practical researchers very much rely on Graphical User Interface (GUI) based statistics software. To make access to GEE (both order 1 and 2) much easier, we developed, using Shiny toolkit, two types of web-based GUI, standard pull down menu type and e-module type (with narrative theories) that can be utilized for learning and fitting GEE. This paper discusses the features of the interfaces and illustrates the use of them. Keywords: longitudinal data, Generalized Estimating Equation (GEE), exponential families, statistical modeling, correlated response, nonparametric, natural splines, shiny toolkit

Using Lignosellulose Waste as a Xylanase Production Media of Mold Isolated from Rice Straw of Coastal-field Utarti, Esti; Siswanto, S.
Jurnal ILMU DASAR Vol 19 No 2 (2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Hemicellulose is one of lignocellulose waste component, so that xylanase is one of importance enzyme of lignocellulose waste biodegradation. Molds as main decomposer lignosellulose waste has enzyme activities higher than yeast and bacteria. The aim of the research is to find mold that have xylanolitic activity using lignocellulose waste as media production. The research consist of isolations and screening mols from coastal-field of watu Ulo Jember, xylanase production using lignocellulose waste and idntification of mold which has the highes xylanase activity. A total of 66 molds isolated from rice straw in coastal-field of Watu Ulo Jember. There were screened for their xylanase activity. In semiquantitatively screen on Oat Spelt Xylan plate, the result showed that 62 have xilanolytic activities. Based on clearing zone production, isolates ESW A1 (3.2), ESW A5 (3.1), ESW C 16 (3.26), ESW D4 (3.0) and ESW D15 (3.21) have xilanase activity index higher than others. Furthermore, quantitative analysis using wheat bran, rice straw and baggase in basic salt Mandel’s modification media showed that xylanase activity of isolate ESW D4 was higher on rice straw 3% as substrate production with activity 2.66 U/mL. Isolate ESW D4 identified as Aspergillus foetidus so that called as Aspergillus foetidus ESW D4. Keywords: rice straw, coastal-field, Aspergillus foetidus ESW-D

Page 7 of 42 | Total Record : 414

5 6 7 8 9

Filter by Year

2007 2025

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

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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