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Evaluation of Vegetables Shelf Life Using Multispectral Scattering Method Faisal Abdullah
Jurnal Natural Volume 14, Number 1, March 2014
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.633 KB)

This study was aimed to develop an algorithm based on the optical properties of some selected vegetables which can be used to evaluate shelf- life of some selected vegetables using multispectral scattering method. Multispectral algorithm will be developed to correlate light backscattering radiation of a vegetable with the level of shelf life conditions. The partial least square (PLS) regression models using three wavelengths were used to estimate the shelf life changes of the vegetable samples. The results showed that the developed multispectral scattering algorithms can be used to evaluate the shelf life changes of Chinese cabbage, carrot, chili, and cucumber using wavelengths at 880, 890, and 950 nm as the light sources respectively. The calibration and validation processes of the algorithm produced good accuracy measurements as represented by high R2 values and low Root Mean Square Error (RMSE). For the Chinese cabbage and the carrot samples, the algorithm was not effective to predict the changes of the shelf life because the responses was kept increasing even after the samples were dried and deteriorated. Also, the algorithms cannot be used to evaluate the shelf life changes of the onion because the calibration and validation processes produced low accuracy of measurements.

Application of gravity method in cultural harritage Cot Sidi Abdullah Site, Samudera Pasai, North Aceh NOVIA PURNAMA SARI; TOMI AFRIZAL; FAISAL ABDULLAH; NAZLI ISMAIL
Jurnal Natural Volume 20 Number 3, October 2020
Publisher : Universitas Syiah Kuala

The gravity method was applied to the cultural heritage site of Cot Sidi Abdullah in Kuta Krueng Village, Samudera Pasai District, North Aceh Regency for mapping and reconstruction structure of the cultural heritage site and distribution of artifact objects buried in the subsurface. Data measurement was carried out in a grid with 2 meters spacing between the points to cover all area of the cultural heritage site. The model of gravity anomaly distribution from the vertical derivative results shows a square pattern of anomaly gravity surrounding the measurement areas. This anomaly pattern is thought as a response from the remaining walls of the site structure which are buried in the subsurface with anomalous values between 0.02 mGal/m - 0.08 mGal/m. The estimation of the walls of the archaeological site from the anomalous response to this gravity value is proved by the excavation results in the southern part of the study area. While the minimum value of the vertical derivative filter (-0.06 mGal/m to - 0.01 mGal/m) is the response from the area around the archaeological site. The reconstruction results of the site based on the estimation of the walls with a length of ± 45 meters and a width of ± 40 meters.

Adsorption Of Cd(II) Ions From Aqueous Solution By A Low-Cost Biosorbent Prepared From Ipomea Pes-Caprae Stem Thaharah Ramadhani; Faisal Abdullah; Indra Indra; Abrar Muslim; Suhendrayatna Suhendrayatna; Hesti Meilina; Saiful Saiful
Aceh International Journal of Science and Technology Vol 9, No 3 (2020): December 2020
Publisher : Graduate Program of Syiah Kuala University

The use of a low-cost biosorbent prepared from Ipomoea pes-caprae stem for the adsorption of Cd(II) ions from aqueous solution at different contact times, biosorbent sizes, pH values, and initial Cd(II) ions concentration solution was investigated. The biosorbent was analyzed using Fourier-transform infrared spectroscopy (FT-IR) to find important IR-active functional groups. A scanning electron microscope (SEM) was used to examine the biosorbent morphology. The experimental results showed the highest Cd(II) ions adsorption was 29.513 mg/g under an optimal condition as initial Cd(II) ions concentration of 662.77 mg/L, 1 g dose, 80-min contact time, pH 5, 75 rpm of stirring speed, 1 atm, and 30 oC. Cd(II) ions' adsorption kinetics obeys the linearized pseudo-second-order kinetics (R2 = 0.996), and the adsorption capacity is based on the optimal condition, and the rate attained was 44.444 mg/g and 0.097 g/mg. Min, respectively. Besides, the adsorption isotherms were very well fitted by the linearized Langmuir isotherm model, and the monolayer adsorption capacity and pore volume determined was 30.121 mg/g and 0.129 L/mg, respectively. These results indicated the chemisorption nature

Pemetaan Endapan Mineral Teralterasi Hidrotermal Menggunakan Analisis Citra Landsat 8 di Sekitar Gunung Api Bur Ni Geureudong, Kabupaten Bener Meriah, Aceh Nazli Ismail; Nela Wirja; Deviyani R. Putri; Muhammad Nanda; Faisal Faisal
Jurnal Rekayasa Elektrika Vol 16, No 2 (2020)
Publisher : Universitas Syiah Kuala

Vegetation area and altered mineral by hydrothermal mapping using Landsat 8 satellite data has been done at Bur Ni Geurudong Volcano, Bener Meriah Regency, Aceh Province. Bands 5 and 4 data were used for Normalized Different Vegetation Index (NDVI) transformation technique. Band composition ratio of 6/5 and 6/7 were used for band ratio technique to interprete ferric oxide and clay minerals. The results show moderate (0.2-0.5) distribution of vegetation density found at Wih Pesam and Pante Raya Barat. The high density (0.50-0.88) vegetation areas are found at Silih Nara and Pinto Rime Gayo. The maximum distribution (1.98-2.23) of ferric oxide minerals found at Bur Ni Telong and few at Pinto Rime Gayo with sulfur content manifestation. This mineral is also founded on Silinara manifestation area. Maximum (2.33-8.88) distribution of clay mineral was found at Bur Ni Geureudong Volcano, few seen at Bur Ni Telong area. Based on the results, the Landsat 8 satellite imagery is effectively used for mapping of ferric oxide and clay minerals. Mapping of ferric oxide and clay minerals rovide information about the types of minerals that exist in Bur Ni Geurudong Volcano as a preliminary information about the types of geothermal reservoir rocks in the region.

Analysis of changes in mangrove ecosystems in Banda Aceh city 17 years after the 2004 tsunami Maulana Gogo; Faisal Abdullah; Saumi Syahreza; Muhammad Budi
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Mangrove has the most important role especially in the coastal area. The existence of mangrove habitats in Banda Aceh which got decreasing and loss after tsunami disaster in 2004. The purpose of this study was to the distribution of mangrove in Banda Aceh divided into five (5) sub districts including Jaya Baru, Kuta Alam, KutaRaja, Meuraxa, and Syiah Kuala. This study the mangrove changes after tsunami 2004, began from 2005, 2010, 2015, and 2022. The main data used in this study are Landsat 5 and Sentinel 2A images. Methods of image processing applied in this study are NDVI analysis and supervised classification-based image classification. Theresults are able to show the changes of mangrove area in Banda Aceh from 2004 to 2022. Mangrove area in 2005 is 28.89 ha, 2010 is 81.38 ha, 2015 is 180.27 ha, and 2022 is 121.34 ha. It can be seen that there is a decreasing of mangrove area from 2015 to 2022. The analysis results are also able to show that Kuta raja sub district has the largest mangrove area of 60.11 ha or 49.54 % of the overall area. According to the overall results, it can be said that remote sensing satellite images such as Landsat and Sentinel 2A are very useful in conducting the spatio-temporal research from the long-term periods. This study is hoped to be able to become a reference data in efforts to restore the mangrove in Banda Aceh in order to create the sustainable ecosystem area.Keywords:Mangrove ecosystemsRestorationNDVISupervised classificationSpatio temporal

Analysis of changes in mangrove land cover on the north coast of Aceh Besar Kamisnuddin Kamisnuddin; Muhammad Rusdi; Muhammad Irham; Faisal Abdullah
Depik Vol 12, No 1 (2023): APRIL 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

The use of Geographic Information Systems (GIS) to generate digital data that provides information on the characteristics of an area and describes changes in land cover that can be used in a more effective and efficient sustainable manner. This study aims to analyze the mangrove land cover of the north coast of Aceh Besar over the last three decades, namely 2000, 2010, and 2020 in the Baitussalam sub-district, Mesjid Raya sub-district and Seulimeum sub-district. The research was conducted from June 2022 to September 2022 at the GIS Laboratory, Faculty of Marine and Fisheries, Syiah Kuala University. The research was conducted using a Geographic Information System (GIS) that utilizes high-resolution satellite imagery from Google Earth Pro. Mangrove land was digitized visually on screen, then data processing was carried out, and spatially analyzed. The results of the analysis of changes in mangrove land cover in the research area show that the Baitussalam and Mesjid Raya sub-districts had a decreasing trend of mangove land between 2000 and 2010 and subsequently there was an increase in mangrove land cover from 2010 to 2020. Meanwhile, Seulimeum sub-district experienced a decreasing trend of land cover in 2000 until 2020. The decline in the trend of mangroves in various places is caused by the growth of the population using mangrove land as residential area. While the increase in mangove land cover was due to the success of reforestation and pond land conversion. The results conclude that the mangrove land cover on the north coast of Aceh Besar is relatively stable with an increasing trend of growth.Keywords:Land coverMangroveHigh resolution googleHistorical imageryGoogle earth proDigitize

Analysis of changes in mangrove ecosystems in Banda Aceh city 17 years after the 2004 tsunami Maulana Gogo; Faisal Abdullah; Saumi Syahreza; Muhammad Budi
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.28515

Mangrove has the most important role especially in the coastal area. The existence of mangrove habitats in Banda Aceh which got decreasing and loss after tsunami disaster in 2004. The purpose of this study was to the distribution of mangrove in Banda Aceh divided into five (5) sub districts including Jaya Baru, Kuta Alam, KutaRaja, Meuraxa, and Syiah Kuala. This study the mangrove changes after tsunami 2004, began from 2005, 2010, 2015, and 2022. The main data used in this study are Landsat 5 and Sentinel 2A images. Methods of image processing applied in this study are NDVI analysis and supervised classification-based image classification. Theresults are able to show the changes of mangrove area in Banda Aceh from 2004 to 2022. Mangrove area in 2005 is 28.89 ha, 2010 is 81.38 ha, 2015 is 180.27 ha, and 2022 is 121.34 ha. It can be seen that there is a decreasing of mangrove area from 2015 to 2022. The analysis results are also able to show that Kuta raja sub district has the largest mangrove area of 60.11 ha or 49.54 % of the overall area. According to the overall results, it can be said that remote sensing satellite images such as Landsat and Sentinel 2A are very useful in conducting the spatio-temporal research from the long-term periods. This study is hoped to be able to become a reference data in efforts to restore the mangrove in Banda Aceh in order to create the sustainable ecosystem area.Keywords:Mangrove ecosystemsRestorationNDVISupervised classificationSpatio temporal

Pemetaan Endapan Mineral Teralterasi Hidrotermal Menggunakan Analisis Citra Landsat 8 di Sekitar Gunung Api Bur Ni Geureudong, Kabupaten Bener Meriah, Aceh Nazli Ismail; Nela Wirja; Deviyani R. Putri; Muhammad Nanda; Faisal Faisal
Jurnal Rekayasa Elektrika Vol 16, No 2 (2020)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v16i2.14907

Vegetation area and altered mineral by hydrothermal mapping using Landsat 8 satellite data has been done at Bur Ni Geurudong Volcano, Bener Meriah Regency, Aceh Province. Bands 5 and 4 data were used for Normalized Different Vegetation Index (NDVI) transformation technique. Band composition ratio of 6/5 and 6/7 were used for band ratio technique to interprete ferric oxide and clay minerals. The results show moderate (0.2-0.5) distribution of vegetation density found at Wih Pesam and Pante Raya Barat. The high density (0.50-0.88) vegetation areas are found at Silih Nara and Pinto Rime Gayo. The maximum distribution (1.98-2.23) of ferric oxide minerals found at Bur Ni Telong and few at Pinto Rime Gayo with sulfur content manifestation. This mineral is also founded on Silinara manifestation area. Maximum (2.33-8.88) distribution of clay mineral was found at Bur Ni Geureudong Volcano, few seen at Bur Ni Telong area. Based on the results, the Landsat 8 satellite imagery is effectively used for mapping of ferric oxide and clay minerals. Mapping of ferric oxide and clay minerals rovide information about the types of minerals that exist in Bur Ni Geurudong Volcano as a preliminary information about the types of geothermal reservoir rocks in the region.

Monitoring of Heat Flux Energy in the Northernmost Part of Sumatra Volcano Using Landsat 8 and Meteorological Data Muhammad Yanis; Nasrullah Zaini; Isra Novari; Faisal Abdullah; Bondan Galih Dewanto; Muhammad Isa; Marwan Marwan; Muzakir Zainal; Abdurrahman Abdurrahman
International Journal of Renewable Energy Development Vol 12, No 1 (2023): January 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.47048

Geothermal energy, as a part of green and renewable energy, has been widely developed in the world to replace the current conventional fossil energy. Peut Sagoe is an active volcano in the northern part of Sumatra. The volcanic mountain has not been completely explored for geothermal and energy reserves study. This is due to the volcano locates in a high topography and surrounded by dense tropical forest, which makes it challenging to deploy geophysical instruments in the area. The Landsat 8 thermal infrared and meteorological data from 2013 – 2020 were used to estimate the energy resources by calculating the radiative heat flux (RHF) and measuring the energy lost annually through the heat discharge rate (HDR). We also used the normalized differential vegetation index (NDVI) for vegetation analysis, and estimation of its emissivity data. The mono-window algorithm was used to calculate the land surface temperature (LST). The Stefan–Boltzmann equation was utilized to analyze thermal infrared data for RHF, and ambient temperature and relative humidity data were acquired from the Indonesian Meteorological Agency (BMKG) database. The results showed that low vegetation values and high LST of 25°C–35°C were found in crater areas, which indicate the underground thermal activities of the mountain. It demonstrates that the maximum RHF values were 55 W/m2 in 2013 and 37 W/m2 in 2020. The HDR data were calculated by applying 15% of the RHF data, and the amounts of energy lost were 132.5 MWe and 64.5 MWe in 2013 and 2015 respectively. It increased to 186.4 MWe in 2017 and 89 MWe in 2020. Based on these predicted results, we conclude that the combination of thermal infrared imagery of Landsat 8 and meteorological data is an effective approach in estimating geothermal energy potential and energy loss of volcanoes situated in remote areas

Analysis of changes in mangrove ecosystems in Banda Aceh city 17 years after the 2004 tsunami Maulana Gogo; Faisal Abdullah; Saumi Syahreza; Muhammad Budi
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.28515

Mangrove has the most important role especially in the coastal area. The existence of mangrove habitats in Banda Aceh which got decreasing and loss after tsunami disaster in 2004. The purpose of this study was to the distribution of mangrove in Banda Aceh divided into five (5) sub districts including Jaya Baru, Kuta Alam, KutaRaja, Meuraxa, and Syiah Kuala. This study the mangrove changes after tsunami 2004, began from 2005, 2010, 2015, and 2022. The main data used in this study are Landsat 5 and Sentinel 2A images. Methods of image processing applied in this study are NDVI analysis and supervised classification-based image classification. Theresults are able to show the changes of mangrove area in Banda Aceh from 2004 to 2022. Mangrove area in 2005 is 28.89 ha, 2010 is 81.38 ha, 2015 is 180.27 ha, and 2022 is 121.34 ha. It can be seen that there is a decreasing of mangrove area from 2015 to 2022. The analysis results are also able to show that Kuta raja sub district has the largest mangrove area of 60.11 ha or 49.54 % of the overall area. According to the overall results, it can be said that remote sensing satellite images such as Landsat and Sentinel 2A are very useful in conducting the spatio-temporal research from the long-term periods. This study is hoped to be able to become a reference data in efforts to restore the mangrove in Banda Aceh in order to create the sustainable ecosystem area.Keywords:Mangrove ecosystemsRestorationNDVISupervised classificationSpatio temporal

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