bluuebunny/crossref_metadata_2025_split huggingface dataset:
Detection of counterfeiting rice bran using near-infrared reflectance spectroscopy (NIRS)
Authors: Damela P , Despal  , Adrizal  , Afnan I M 
Published: February 2024

Abstract
This study aims to compare rice bran quality from different origins and to differentiate rice bran from rice husk based on the spectrum produced by Near Infrared Reflectance Spectroscopy (NIRS) technology. The rice bran used in this study comes from mills and poultry shops in West Java and Sumatra. This study used husks as an adulteration mixing material in rice bran with mixing levels of 25% rice bran: 75% husk, 50% rice bran: 50% husk, and 75% rice bran: 25% husk. Proximate compositions (water content, ash content, ether extract (EE), crude protein (CP), and crude fiber (CF)) were observed. NIRS spectra were collected using the Buchi NIRCal 5.2 application. The results showed an interaction between provider and origin on rice bran EE, CP, and CF contents. Rice bran provided by the miller had better quality with higher CP (17.3% vs. 12.2%) and lower CF (12.0% vs. 16.6%) content in the West Java origin case and higher EE (16.5% vs. 11.1%) in West Sumatera case. The broad spectra distribution showed the variety of the rice bran quality from the poultry shop. The artificial adulteration spectra confirm the impure rice bran quality from the poultry shop.
How to enhance soil quality in dryland farming systems in Indonesia (Review)
Authors: Sufardi S 
Published: February 2024

Abstract
Soil quality is one of the factors that determines the sustainability of an agricultural system. The ability of types of soil to support the health and habitat of living things, maintain the production of plants and animals, and preserve the quality of the water and air is known as soil quality. Soil quality is not limited to agricultural land, but also includes how to maintain soil function as part of the ecology. In dryland farming systems, the issue of soil quality has become a concern of researchers and agribusiness actors because there are many problems related to dryland management systems, especially in Indonesia, where most farmers have not mastered good farming techniques. This paper presents a review of soil quality in Indonesian dryland farming systems and offers several solutions to improve soil quality through an agroecological approach.
Shelf-life prediction of chicken nuggets based on the thickness level of composite plastic packaging using accelerated shelf-life testing (ASLT) method by the Arrhenius equation approach
Authors: Rohaya S , Rahmat F , Sulaiman I 
Published: February 2024

Abstract
The packaging of ground chicken meat, known as chicken nuggets, generally experiences a very rapid rate of deterioration caused by microorganisms. To determine the shelf life of chicken nuggets, shelf life measurements are made by accelerating product degradation through environmental conditions such as temperature, humidity, gas atmosphere, and light. In this study, the thickness level of composite plastic packaging was tested using the accelerated shelf-life testing (ASLT) method with the Arrhenius equation approach. The study looked at the critical period of chicken nuggets packed in 15μm nylon and LLDPE composite plastic packaging with a thickness of 40μm and 50μm stored in an incubator at 45°C for two days, then sensory evaluation once a day and calculated the shelf life, where chicken nuggets were packed in 15μm nylon and LLDPE composite plastic packaging with a thickness of 40μm and 50μm and stored in an incubator with temperature variations of -15, 5 and 25 °C for 25 days, every five days analyzed for moisture content and TPC. The best shelf life of chicken nuggets is found in 50μm thickness composite plastic packaging at a temperature of -15 °C, lasting 136 days.
Changes in land use and land cover in forest areas in Bener Meriah and Aceh Tengah Districts, Indonesia
Authors: Anhar A , Muslih A M , Baihaqi A , Abubakar Y 
Published: February 2024

Abstract
This research aims to obtain information regarding land use and land cover (LULC) changes in forest areas in Bener Meriah and Aceh Tengah Districts in 2000-2021, especially on the loss and gain of forest areas, and conversion between land cover classes. We used Landsat 5 (TM) satellite imagery data recorded in 2000 and 2006, and Landsat 8 (OLI) satellite imagery recorded in 2014 and 2020/2021 on path/row data, namely 130/57. The classification processes of LULC included the determination of training areas, supervised classification, and accuracy assessment. The LULC in Bener Meriah and Aceh Tengah districts are dominated by primary dryland forest and secondary dryland forest 250348.45 ha (53.65%) and 103153.16 ha (22.11%), respectively; other land covers, plantation forest 45601.12 ha (9.77%) and shrubs 314722.96 ha (6.74%). However, there is a very significant increase in mixed dryland agriculture areas, from 3186.33 ha (0.68%) in 2000 to 19283.26 ha (4.13%) in 2021. Forest area management has shown a positive trend by significantly increasing in primary dryland forest areas, but there has also been a significant increase in mixed dryland agriculture areas. It is important to find solutions to prevent the spread of deforestation and maintain the sustainability and services of forest ecosystems.
The Population of siamang ( Sympalangus syndactylus) in Damaran Baru Forest, Timang Gajah District, Bener Meriah Regency
Authors: Ar Rasyid U H , Roslizawaty  , Ningsih M , Erdiansyah  , Farida A , Arlita T , Rosita I 
Published: February 2024

Abstract
The decline in the siamang population is due to increased trade, hunting and habitat degradation. The main buffer habitats generally only remain in forests with conservation forest status, one of which is the Damaran Baru Village Forest. This study aims to identify siamang populations in Damaran Baru Village Forest, Timang Gajah District. The research was conducted for one month from May to June 2023. The location was determined using a purposive sampling technique based on direct encounters and the tracks left by these animals. The research method used was observation with the concentration count, by recording the coordinates, height, number of individuals, sex of the animal and the number of each age class. The population was analyzed using the equation of population size and population density. Based on the data, the population was 15 individuals from 5 groups with a density of 6.97 individuals/km2. The age classes of adults (66.6%) and juvenile-1 (20%) dominated the age structure; hence, the population’s sustainability is considered good enough. Group 4 is the most balanced group in terms of age composition, because it has individual representatives in each age class. The sexual ratio in each group of siamang is 1:1.
Cocoa plant mapping in Aceh Tamiang regency, Aceh Indonesia: an object-based image analysis approach
Authors: Rizki W A , Sugianto S , Fazlina Y D , Rusdi M , Wijaya L 
Published: February 2024

Abstract
Cocoa is one of the leading commodities of plantations that has a vital role in the Indonesian economy. Due to the unavailability of detailed cocoa area data in Aceh Tamiang Regency, mapping was carried out by utilizing remote sensing technology. This study aims to map and determine the distribution of cocoa plants in Aceh Tamiang Regency using the object-based image analysis (OBIA) method and the accuracy test of the OBIA method to map cocoa plants. The object-based image analysis (OBIA) classification results for cocoa plants covered 946.87 ha and cocoa plants spread across 12 districts in Aceh Tamiang Regency. The widest distribution of cocoa is in Karang Baru District, 139.22 ha with a percentage of 14.70%, and the smallest area in Kota Kualasimpang District, covering an area of 6.30 ha with a rate of 0.67%. The results of the accuracy test to map cocoa plants using the OBIA method obtained an overall accuracy value of 95% and a kappa value of 86%.
Assessing carbon pools in Lemo Nakai community forest Bengkulu
Authors: Barchia M F , Sulistyo B , Limbong A G , Ananda A P , Suhartoyo H 
Published: February 2024

Abstract
Carbon sequestration and stockpiling in Indonesian community forests become a pressing issue in the context of efforts to mitigate climate change and Indonesia’s contribution to the Sustainable Development Goals. This investigation aimed to determine the carbon stocks at various forest structures within the Lemo Nakai (CF) community forest. The CF encompasses an area between 3°25‘59,588” - 3 27‘57,982” in altitude and 102°19‘25,108” - 102°22‘23,416” in length. The research was conducted between February and July of 2022. The estimated biomass in dense, medium, and sparse forest structures was 601 tons ha-1, 443 tons ha-1, and 241 tons ha-1, respectively, with carbon reservoirs of 276 tons ha-1, 204 tons ha-1, and 111 tons ha-1, respectively. In addition, the estimated CO2eq absorption in dense, medium, and sparse forest structures were 1,013 tons ha-1, 748 tons ha-1, and 406 tons ha-1, respectively.
Numerical simulation of water wave propagation using DualSPHysics
Authors: Trimulyono A , Dhanureski B R , Samuel S , Jokosisworo S 
Published: February 2024

Abstract
In this study, the study of water waves was carried out using one of major the mesh-free CFD i.e. Smoothed Particle Hydrodynamics (SPH). DualSPHysics ver 5.0 which is an open-source SPH solver based on Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) was used to reproduce three dimension of water waves in large and medium numerical wave tanks (NWT). This study analyses water wave profiles and the accuracy of DualSPHysics for regular waves with period 1.15 second and two NWT were used, i.e., 35 and 15 m. In addition, advanced post-processing using VisualSPHysics was used to mimic water waves in real conditions. Single water depth was used, i.e. 0.4 meters for large and medium NWT. The results showed SPH has limitations for reproducing large NWT. However medium NWT successfully reproduce water wave with advanced post-processing using VisualSPHysics.
Simulation of a Wave Hydrodynamic Numerical Model on a Single Vertical Porous Breakwater
Authors: Sujantoko  , Pramestika G. A. , Mustain M. , Ikhwani H. , Hadiwidodo Y. S. 
Published: February 2024

Abstract
One of the problems in the coastal area is a change in the coastline in the form of a coastline retreat which results in the loss or damage of infrastructure and settlement facilities caused by extreme sea wave activity. One way to anticipate this problem is to build a breakwater. This research is focused on the effect of porosity and freeboard on the transmission and reflection of waves in a single vertical porous breakwater. Numerical modeling was done using a 3D Numerical Wave Tank (NWT) based on Smoothed Particle Hydrodynamic (SPH). The numerical model results show that the average transmission and reflection coefficients are 0.58 and 0.42. In addition, it can be seen that the freeboard and porosity influence the value of the transmission and reflection coefficients. Generally, the smaller the freeboard, the greater the transmission coefficient and the smaller the reflection coefficient. Meanwhile, the greater the porosity, the greater the transmission coefficient, and vice versa, the smaller the reflection.
Use of Ergonomics and Analytical Hierarchy Process Model for Selection of Cities of Small Medium Enterprises
Authors: Nurmianto Eko , Kusuma S H , Nurif M , Kurniawan M D , Nurmianto F N , Nugraha K A 
Published: February 2024

Abstract
Fish Smoking is a traditional method that has long been used in fisheries. The use of fish smoking devices can have a negative impact on human health which results in the entry of smoke into the eyes, lungs, and skin. In order not to be harmful to human health, ergonomic and healthy fish smoking devices are used. This study analyzes the prioritization of Small Medium Enterprises (SMEs) groups in the use of fish smoking devices to reduce the risk of health problems. The approach method used in this analysis uses the Ergonomics and Analytical Hierarchy Process (AHP) method to determine the priorities of SMEs groups in the use of fish smoking devices. The criteria in this analysis are Ergonomics (Safe, Comfortable, Healthy), Health, Education Level, Community Participation, Motivation, Habits, and Resistance. The results of the analysis found that priority choices in percentage include E, A, B, D, and C regencies. It is hoped that with the holding of Diffusion Technology Results of Innovation Products (DTHPI), the use of modern fish smoking devices that are more ergonomic, healthy, and practical can help improve the welfare of SMEs.
Mapping mangrove above ground carbon stock of benoa bay bali using sentinel-1 satellite imagery
Authors: Hidayah Z , Utama R Y S , As-Syakur A R , Rachman H A , Wiyanto D B 
Published: February 2024

Abstract
Mangrove forest ecosystems distributed in tropical countries play an important role in carbon sequestration. The presence of mangrove forests is estimated to be capable of reducing CO2 levels caused by air pollution. The process of photosynthesis absorbs CO2 gas from the atmosphere and stores it as organic matter in the form of plant biomass. The amount of carbon stock stored in mangrove forests can be estimated using a regression model based on satellite imagery pixel values and above ground biomass (AGB) measurements. This study used the backscattering value of SAR Sentinel 1 images and field AGB measurements to map carbon stocks in the mangrove forest ecosystem of Benoa Bay, Bali. The processed backscattering value is the result of VV and VH polarization in the SAR Sentinel 1 image acquired in 2022. Meanwhile, AGB is calculated using the allometric equation based on the mangrove’s species found at the study site. The biomass at the study location was estimated to be in the range of 64.18 Mg/Ha to 175.24 Mg/Ha, with an average of 115.34 ± 25.33 Mg/Ha. Therefore, the carbon stock of Benoa Bay can be estimated to have values in the range of 30.16 MgC/Ha to 82.36 MgC/Ha, with an average of 54.21 ± 11.09 MgC/Ha. In terms of estimating AGB biomass based on SAR pixel values, the VH polarization produces a better model (R2 = 0.635) than the VV polarization.
Comparison of peak ground acceleration using deterministic and probabilistic approach in the coastal area of Loh Buaya, Rinca Island, Indonesia
Authors: Rakhman Heryawan Kurnia , Ismanti Sito , Aditya Trias 
Published: February 2024

Abstract
An area located near an active volcano, subduction zone, and/or active fault has a risk of an earthquake. Earthquakes can cause damage to buildings with a large number of losses. One of the earthquake-related parameters required in planning an earthquake-resistant building is the Peak Ground Acceleration (PGA). The objective of this study is to compare the PGA value at the coastal area of Loh Buaya, Rinca Island, Indonesia, using Probabilistic Seismic Hazard Analysis (PSHA) and Deterministic Seismic Hazard Analysis (DSHA). The DSHA is calculated based on earthquake data series from the United States Geological Survey (USGS) in the period between 1922 to 2022. Also, it is calculated using 10 data of Ground Motion Prediction Equation (GMPE). Data from the USGS is constrained with magnitude > 5.0 MW and earthquake distance < 200 km from the study site. The PSHA is based on the Indonesian earthquake hazard map and the de-aggregation map from the National Earthquake Study Centre of Indonesia with a probability exceeding 2% in 50 years. Based on the parameters of PGA maximum, distance, and magnitude, the DSHA by Kanno method has the closest result to the PSHA. It is concluded that this area has a high earthquake risk with a PGA maximum of more than 0.5 g.
Pesisir Barat Lampung Offshore Wind Characteristic in Local Renewable Energy Development Studies
Authors: Hermanto M F , Nandalianadhira N , Kencana E R , Khaldun M H I , Hutajulu I D , Epipanus D , Samosir J D 
Published: February 2024

Abstract
Renewable energy is one of the most researched topics. One renewable energy source is wind energy. As with some other energy sources, there are 2 locations for wind energy conversion, onshore and offshore. Using offshore wind energy requires more accurate wind data due to the higher risk. The characteristics of the wind at sea are one of these data. This study used data sets from ECMWF and BMKG from 2001 to 2020 (20 years). This research aims to examine the wind characteristics in the offshore of Pesisir Barat Lampung. The wind characteristics being examined are wind speed, wind direction, wind blowing duration, and wind speed distribution. The maximum hourly mean wind speed in these waters is 16.35 m/s. The dominant wind direction is blowing from the South East (SE). The maximum average wind-blowing duration to SE direction is 11 hours based on ECMWF and 14 hours based on BMKG. Based on the Chi-Square and Kolmogorov-Smirnov distribution fitting methods, the wind speed distribution in these waters is best fitted by the Weibull distribution for the ECMWF and the Lognormal distribution for BMKG. Using these two data sources, on average, ECMWF provides wind speeds 5% to 20% higher than BMKG. In analyzing wind potential, BMKG data will certainly provide more critical results than ECMWF data. In the analysis of offshore support structures, ECMWF data will certainly produce more critical structures. While the calculation of potential is better using BMKG data. Wind power potential in Pesisir Barat offshore is in the range of 44.6 to 82.9 W/m2.
Assessment of the Quality of Raw Water for Salt Production in Pangarengan, Sampang, East Java
Authors: Wardhani Maulinna Kusumo , Sulistiyorini Dyah Ayu 
Published: February 2024

Abstract
Seawater is the primary raw material for the production of sea salt. Seawater quality dramatically affects to salt production. The purpose of this study was to evaluate the seawater’s quality as a raw material for salt production in Pangarengan, Sampang, East Java, Indonesia. The assessment of water quality in this study includes physical and chemical characteristics. The location of this research was in the salt fields that close to settlements with high anthropogenic activity. Sampling points were the seawater inlet (P1), reservoir plot/bozem (P2), and evaporation plot (P3). Assessment of temperature, pH, salinity and water saturation using in-situ measurements. Determination of heavy metal parameters (Mercury, Cadmium, Lead, and Arsenic) using UV spectrometry. The physical characteristics of the highest water temperatures were in evaporated plot (40°C), while the water temperatures in the seawater entrance and reservoir ponds were respectively 33.5 °C and 36 °C. pH, one of the chemicals parameter, at the seawater entrance, reservoir plot, and evaporated plot were 8.2, 7.7, and 9. The salinity of the three points is more than 33 ‰, and the raw water saturation in the evaporated pool is 24° Be. Analysis of heavy metals in this study showed levels below seawater quality standards for consumption purposes.
Design of wave spectrum in the Java Sea
Authors: Dhanistha W L , Suntoyo  , Rosyid D M. , Akbar R 
Published: February 2024

Abstract
Information about wave characteristics plays a crucial role in the design of coastal and offshore infrastructure. This information is necessary to establish safety parameters for structures located offshore. Key parameters of interest include significant wave height and wave period, which are typically described through a wave spectrum. The creation of this wave spectrum involves using the fast Fourier transform, which converts the time domain into the frequency domain. The JONSWAP method describes how wave energy is distributed in the wave spectrum based on specific parameters, such as wind speed, duration of the wind, and the prevailing wave conditions. This method attempts to account for changes in the wave spectrum that occur when the wind blows at different intensities. As a result, the JONSWAP method allows for the generation of more realistic wave spectra under various weather conditions. From this energy spectrum, the JONSWAP shape will be sought to closely match the energy spectrum.
The Advantages and Challenges of Carbon Fiber Reinforced Polymers for Tidal Current Turbine Systems - An Overview
Authors: Satrio D , Musabikha S , Junianto S , Prifiharni S , Kusumastuti R , Nikitasari A , Priyotomo G 
Published: February 2024

Abstract
A significant step in reducing the effects of greenhouse gases is obtaining electric energy from renewable sources. Electricity from tidal currents using underwater turbines is one of the most promising and well-liked technologies. The turbine systems are the key element in the tidal current energy. They are built using hydrodynamic principles to extract the most power possible from tidal ocean currents and are designed to last for extended periods in a maritime environment. The performance of tidal turbines is also significantly influenced by their materials, i.e., carbon fiber reinforced polymers (CFRP) used in them. This paper also reviews the CFRP materials used in tidal current turbine systems. Besides, an analysis of their advantages and challenges regarding CFRP materials that can impact tidal current turbine efficiency is further explored.
Planning on Perintis Shipping Rerouting By Utilizing Commercial Shipping: Case Study of Kupang, East Nusa Tenggara
Authors: Wuryaningrum P , Yunianto I T , Hadi F , Santosa I G B 
Published: February 2024

Abstract
Perintis shipping is an Indonesian government program that is a domestic subsidized shipping that connects islands in Indonesia to increase the connectivity, especially for underdeveloped, remote, and border areas, or called 3TP. As Perintis shipping services have grown, with more routes and voyages, subsidies have also increased. The aim of this paper is to explore possible solutions for reducing subsidies by analyzing routes that intersect with commercial shipping. The objective is to determine the optimal route by rerouting the current Perintis route and utilizing the commercial route. This involves analyzing various factors such as operational efficiency, technical and financial considerations to identify the most feasible routes. This research focuses on the Perintis shipping route in Kupang, East Nusa Tenggara. There are five Perintis shipping routes, but only three of them intersect with commercial shipping routes. There are four potential routes available, consisting of three options for R-23 and one option for R-24. Based on the analysis, it has been determined that the most feasible option is the first option of R-24. The chosen routes have witnessed a reduction in subsidies, with a total amount of IDR 30.56 million and commercial shipping has achieved a profit increase of IDR 809.70 million.
Pre-processing data and window function testing on wave spectrum analysis
Authors: Panalaran S. , Suntoyo  , Sulisetyono Aries 
Published: February 2024

Abstract
Pre-processing data in oceanographic data research is an important step in processing data into the required information. This phase often takes longer and more rigorous time to present the correct data. Data pre-processing involves the selection of data, and the modification of data so that it can be readable in a computational algorithm. The data selection process includes selection of sample numbers, correction and filling of data gaps.The data used in spectrum analysis is the recording of the water surface profile of the wave in the data resolution of 1 second. The data needs to be corrected by the process of detrending against the tidal height which become the still water level. The spectral analysis is processed using the pwelch function on MATLAB. The frequency spectrum curve of the measurement is obtained from the calculation of the power spectral density value. In order to obtain a stable power spectral density curve, the Hann window function is used with the number of window elements, nfft/16.