bluuebunny/crossref_metadata_2025_split huggingface dataset:
Towards a water-sensitive city: level of regional damage to floods in Makassar City (case study: Manggala District)
Authors: Ihsan  , Rasyid A R , Arifin M , Rochma M A F , Asfan L M , G L , Yanti S A 
Published: May 2020

Abstract
Makassar City is a large city that is facing climate change, population growth and rapid urbanization. This has an impact on increasing land market and demand for servicing facilities and infrastructure. Those impacts can decrease environmental quality, such as environmental degradation and natural disasters. One problem that often occurs every year is the problem of flooding. One of the districts in Makassar City that experienced a flood was Manggala District. This is the background of the researchers to provide an overview of the level of flood vulnerability based on flood vulnerability variables. The variables used in determining the level of flood vulnerability are land cover, rainfall, drainage density, and slope. The objectives of this study are to (1) identify flood vulnerabilities in Manggala District, and (2) identify steps towards Water Sensitive City in its handling solutions from the perspective of urban water management. This study uses a quantitative analysis method with an overlay analysis approach to analyze the vulnerability of flood disasters.
Distribution of Manganese Heavy Metal (Mn) in Soil Around of Antang Landfill, Makassar City, Indonesia
Authors: Artiningsih A , Zubair H , Imran A.M. , Widodo S 
Published: May 2020

Abstract
The Study has been conducted on the distribution of heavy metal content of manganese (Mn) on landfill in Antang, Makassar. The study aims to determine the presence of heavy manganese metal (Mn) in the landfill of Antang Makassar. There are 4 lines namely line A sampling points (A1, A2 and A3), line B sampling points (B1, B2 and B3), line C sampling points (C1, C2 and C3) and line D sampling points (D1, D2 and D3) with a depth of (0-10, 10-20 and 20-30) cm. Total samples analyzed by heavy metal elements using ICP-OES method were 36 samples. The concentration of heavy metal manganese (Mn) in Antang landfill soil has spread horizontally. The results of the analysis showed the presence of heavy metal content of manganese (Mn) in the soil of Antang landfill, where the samples with the highest heavy metal content were found in line A sampling points (A1, A2 and A3) each depth (0-10, 10-20, 20-30) cm. Line C sampling point of C3 at the of depths (0-10 and 10-20) cm, i.e. sequentially (1660 and 1710) ppm. Line D (D1, D2 and D3 sampling points), except, at the sampling point D1 at a depth of 20-30 cm which is 1460 ppm is still below the normal limit, which is allowed by the Government of the Republic of Indonesia and the General of Drug and Food Control as a pollutant inside soil. Soil pH varies from 4.82 to 6 and is acidic. Soil pH significantly affects the solubility and mobility of metals, because most metals dissolve in acidic soils. The level of pollution of heavy metal manganese (Mn) for line A, line C and line D at the sampling points (A1, A2 and A3) at depths (0-10, 10-20 and 20-30) cm are included in the category of heavily polluted because the concentration of heavy metals Mn contained in the soil far exceeds a predetermined threshold. So that necessary remediation of appropriate prevention to prevent risks to humans and the environment.
Village development in the millennial era: youth empowerment in Bana Kecamatan Bonto Cani district, Bone district
Authors: Henriawan N , Asdar M , Taba M I 
Published: May 2020

Abstract
The element of youth becomes an inseparable part of village development, and the synergy between the local government, in this case, the elements of village officials and youth are very important. This study aims (1) To find out the role of Bana village youth in Bontocani sub-district, Bone Regency in village development and to determine the impact of youth involvement in village development (2) To find out the synergy between village government and Bana village youth Bontocani sub-district, Bone district in village development in millennial era. This research conducted in the village of Bana, Bontocani District, Bone Regency. The method used is descriptive qualitative analysis. The results of this study indicate (1) the role of youth in rural community development shows social functions (village development) (2) the synergy of the village government of Bana Subdistrict Bontocani with village youth runs well, in terms of economy, development, and resources.
Land use assessment of Jeneberang watershed using hydrology and water availability analysis
Authors: Putera M I , Munir A , Achmad M , Suhardi  
Published: May 2020

Abstract
Jeneberang watershed management plays an important role to the function of Bili-Bili Dam as a multipurpose dam in maintaining year-round water availability (quantity and distribution), agricultural irrigation, water supply for the local freshwater provider (PDAM), demand on drinking water, and hydroelectric power plants in Gowa, Takalar, and Makassar. The study tried to answer the emerging problem of how to predict the hydrological state and water availability in the Jeneberang watershed throughout the year. This study applied the SWAT (Soil and Water Assessment Tool) model, a distributed model connected to the Geographic Information System (GIS) developed by Jeff Arnold for the USDA ARS (US Department of Agriculture - Agriculture Research Service). The hydrological model would be applied to evaluate a scenario of the climate change effects on the hydrology state. Understanding the watershed hydrological response to the changes in physics (land use) and climate (rainfall and air temperature) is an important component of water resource planning and management (Vorosmarty et al., 2000). One of the performance indicators for the watershed water balance is river discharge fluctuation (Surahman, 2016). The river regime coefficient demonstrates fluctuation in river discharge, a number showing the ratio between maximum discharge (Qmax) and minimum discharge (Qmin). SWAT model analysis showed the highest discharge (Qmax) of 30,805 m³/sec and lowest discharge (Qmin) of 994 m³/sec. The analysis employed the data of 2006 and 2009, resulted in the Nash-Sutcliffe (NS) Efficiency values of 0.65 (satisfied) and R2 of 0.88 that in line with a study of Yusuf (2010) at the Cirasea watershed (0.74) and Junaidi (2011) at the Cisadane watershed (0.70). This value indicates that the SWAT method can predict the hydrological state of watersheds in Indonesia, including the Jeneberang watershed.
Coal quality characterization in East Kalimantan Province, Indonesia: review from proximate, ultimate and calorific value analyses
Authors: Rahman R , Widodo S , Azikin B , Tahir D 
Published: May 2020

Abstract
This study discussed the characterization of the different qualities of coal in Kalimantan. The chemical and physical characterization of Kalimantan coal aimed to find the level of coal quality through proximate, ultimate and calorific value analysis. Based on the results of the study, the coal obtained from PT. Kideco Jaya Agung (KJA) had a moisture content of 17.86%, a fixed carbon of 36.56%, ash of 2.94%, volatile matter of42.64%, carbon of 44.86%, sulfur of 0.079% and calorific value of 4468.65 cal/gram. PT. Indemix Coalindo (IC) had coals with the moisture content of 25.94%, fixed carbon of 32.48%, ash of 3.78%, volatile matter of 38.26%, carbon of 45.03%, sulfur of 0.436% and calorific value of 4462.67 cal/gram. Based on the results of the study, the efforts were needed to improve the quality of coal so that the coal collected could become an alternative energy-source with its highest quality and calorific value. Thus, it could compete in the international market.
Biomass analysis and carbon reserve on some cocoa planting systems in Bantaeng district
Authors: Asrul L , Mustari K , Kaimuddin  , Faradilla L 
Published: May 2020

Abstract
Cocoa plantations have ecological functions as carbon sinks and depositors. Cocoa absorbs CO2 during photosynthesis, then converts it to carbohydrates by storing it in the form of biomass in roots, trees, and leaves. The purpose of this study was to determine the carbon uptake of cocoa trees and tree growers, undergrowth, necromasses, carbon uptake at the root and carbon uptake in soils in several cocoa planting systems implemented in Bantaeng Regency, South Sulawesi. Sampling is done by a purposive sampling method with the basic consideration of the type, density and cropping system applied. Biomass estimation is used the non-destructive method by measuring the diameter at breast height (DBH, 1.3 m) and height of cacao and shade plants. Carbon storage in cocoa plants is distinguished by several cropping systems, namely K1 (monoculture harvesters) and K2 (multistrata harvesters). The results showed that carbon reserves in Bantaeng Regency were 32.38 tons/Ha.
Frequency stability and under frequency load shedding of the Southern Sulawesi power system with integration of wind power plants
Authors: Arief A , Nappu M B , Sultan A 
Published: May 2020

Abstract
The Government of Indonesia is encouraging investments in renewable energy based power plants in Indonesia, including wind power plants (WPPs). Two large WPPs in the Southern Sulawesi interconnected power system are Sidrap WPPs and Jeneponto WPPs. Both Sidrap WPP and Jeneponto WPP are the largest WPPs in Indonesia and they account for significant contribution for the Southern Sulawesi power generation mix. Considering the intermittency characteristics of WPPs and system’s failure probability, therefore it is essential to assess the system’s stability after their integration. This work evaluates the frequency stability of the Southern Sulawesi interconnected power system with the integration of both Sidrap WPPs and Jeneponto WPPs.
Utilization of fly ash waste power plant Bosowa energy Jeneponto South Sulawesi as concrete mixed material
Authors: Nurdin  , Zakir M , Demmallino E B 
Published: May 2020

Abstract
Flyash waste is a result of coal combustion which can pollute the environment. The research aims to determine (1) how the effect of the variation of the percentage of Flyash as a partial substitute for cement on the weight of the concrete load, (2) how the variation in the percentage of Flyash as a partial cement substitute for the compressive strength of concrete, and (3) how does curing variation effect (treatment) on the value of compressive strength of concrete with Flyash as a substitute for partial cement. The research was conducted in the Laboratory of Building Materials, Structures, and Construction, Faculty of Architectural Engineering, University of Hasanuddin, Gowa Regency, South Sulawesi Province. The method used in this study was an experiment by making concrete from Flyash class F waste from PT. Bosowa Energi Jeneponto Regency, South Sulawesi Province. Concrete samples were made in a total of 120 pieces for two types of curing, namely dry curing and water curing, four sample variations namely 0%, 30%, 50%, and 70% Flyash, weight testing and compressive strength of the samples carried out each of the three age of 3, 7, 14, 21 and 28 days respectively. The results showed that the average weight of the lowest concrete samples was in the variation of 30% Flyash for dry curing, which was 3.45 kg, and water curing was 3.61 kg, while the highest was in the 70% variation of Flyash for dry curing, which is 4.47 kg, and water curing is 4.61 kg. Based on variations of 0%, 30%, 50%, and 70% the compressive strength of concrete declined, namely 24.84 MPa, 22.16 MPa, 11.97 MPa, and 4.20 MPa, for dry curing, and 25.73 MPa, 22.93 MPa, 12.87 MPa, and 4.97 MPa for water curing. The effect of curing variations on the compressive strength of concrete is also increasing as the curing period increases, for dry curing 3, 7, 14, 21, and 28 days, respectively 12.73 MPa, 13.33 MPa, 13.63 MPa, 15,07 MPa, and 22.16 MPa, for water curing, respectively 13.50 MPa, 14.09 MPa, 14.56 MPa, 15.84 MPa, and 22, 93 MPa.
The utilizations of solid waste originating from super intensive shrimp farm as organic fertilizers for natural feed productions
Authors: Suwoyo H S , Tuwo A , Haryati  , Anshary H , Syah R 
Published: May 2020

Abstract
Productions and utilizations of organic fertilizers originating from solid waste of super intensive shrimp farms to reduce the amount of wastewater released to the surrounding areas and its environmental impacts, are recommended to support both aquaculture and agriculture industries. This study was aimed to evaluate growth of natural feed (plankton and lablab) fertilized by organic fertilizer originating from super intensive shrimp farm and other different fertilizers. Completely randomized design was applied in this study with four treatments and three replications. The following treatments were urea + SP-36 + organic fertilizers originating from super intensive shrimp farm + isolated shrimp ponds bacteria ISO (A), urea + SP-36 + commercial organic fertilizer (B), Urea + SP-36 + chicken manure fertilizer (C) and control, (urea + SP-36) (D). The dosages of fertilizers were: urea 200 kg/ha, SP-36 100 kg/ha, and organic fertilizers (solid waste originating from super intensive shrimp farm, commercial organic fertilizer and chicken manure fertilizer) 2000 kg/ha. The measured variables were species composition and abundance of phytoplankton, biomass of lablab, and water quality. The results of this study indicated that treatments A and B resulted high in number of plankton genera, which was 19 genera, whereas treatments C and D only 10 genera. The highest mean abundance of plankter was found in Treatment A, which was 14,571 ind/L, followed by Treatment B, 9,489 ind/L; Treatment C was 8,717 ind/L and the lowest was found in Treatment D 5,066 ind/L. The dominant phytoplankton observed in this study was Oscillatoria sp. whereas the most observed zooplankton was Branchionus sp. The mean biomass of lablab produced from solid waste originating from super intensive shrimp farm was 4.35 g/100 cm2 which was not significantly different (p>0.05) from Treatments B and C, but significantly different (p<0,05) from the control. The water quality variables measured during this study was within the acceptable values for natural feed productions.
Potential of biogas production as renewable energy in smallholder dairy farming in Enrekang District, South Sulawesi
Authors: S Aisyah R , Salman D , Siregar A R , Baba S 
Published: May 2020

Abstract
The dairy cow in Enrekang Regency not only produces the main product of fresh milk that is processed into “Dangke” (typical food of Enrekang Regency), but it is also able to produce by-products in the form of alternative energy. The purpose of this study is to analyze the potential of renewable energy by utilizing biogas on people’s dairy farms. The study was conducted in Cendana Subdistrict, Enrekang Regency in May 2018 to Juni 2019. Data were collected using observation, interviews, and documentation with dairy farmers using a purposive sampling method and analyzed using quantitative descriptive. The results show that the potential for feces production over the past five years from 570 dairy cows can produce 11.402 kg/day. Thus, the biogas produced is 456 m3/day, considering that one cow can produce biogas of 2 m3/day and 1 m3 of biogas can be used equivalent to 0,62 liters of kerosene and 0,46 liters of LPG gas. Besides, the potential of biogas energy can meet the cooking needs of one family (4-5 people) for 190 hours or 8 days, considering that the energy contained in one m3 of biogas is 2,000-4,000 Kcal or equivalent to 3 hours. Biogas technology has provided many benefits including improving the health of breeders’ families, used to process cow’s milk into dangke and saving LPG gas expenditure expenses so as to be able to provide additional income for farmers, even though the value generated is not large enough, but the reduction in costs is enough to reduce the cost burden household issued every month.
Description of correlation between quantitative and qualitative assays on candlenut DNA
Authors: Gusmiaty  , Nurhafidah  , Larekeng S.H. 
Published: May 2020

Abstract
DNA isolation is a crucial step in the molecular analysis, which influences the quantity and quality of the DNA. The objective of this study was to determine the correlation between DNA quantitative and qualitative assays on Candlenut (Aleurites moluccana) DNAs. This study was carried out in February up to April 2019. The research procedures consisted of sample collection, DNA isolation using CTAB method and Qiagen DNeasy Plant Mini Kit (QDPMK kit protocol), DNA quantitative assay using Qubit 3.0 fluorometer, and DNA qualitative assay using horizontal electrophoresis. No positive correlation was detected between DNA quantitative and DNAqualitative assays. The quantitative assay observed that the isolated DNA using QDPMK yielded more DNAs than CTAB (<0.2 ng/µl). Meanwhile, DNA qualitative assay reported QDPMK had better DNA quality than CTAB
Climate forecasting uses backpropagation algorithm artificial neural network model for agricultural planning in Gowa regency
Authors: Lestari A A , Munir A 
Published: May 2020

AbstractClimate is defined as the average size and variability of the relevant quantities of certain variables over a period of time with a period of time from monthly to annual or millions of years. This study aims to develop climate prediction models that are used for planning agricultural cultivation activities. The method used in predicting climate is Backpropagation Artificial Neural Network technique based on rainfall data in 1975-2018 in Pallangga sub-district, 1992-2018 in Bontomarannu sub-district and 1997-2018 in Bontonompo sub-district. The results showed that the climate classification according to Oldeman in Bontomarannu sub-district was in the B3 climate type suitable for planting rice crops twice and crops once a year while Pallangga sub-districts and Bontonompo sub-districts were in C3 climate type suitable for planting one-time rice crops and crops twice in one year.
Application of SWOT-AHP in analyzing external and internal environment of youth empowerments
Authors: Syamsuddin A P , Ridwan  , Supratman  
Published: May 2020

Abstract
The low quality of youth resources, the lack of optimal coordination between youth organizations and youth empowerment in Soppeng District so that researchers are interested in conducting more in-depth studies. This study aims to analyze strengths, weaknesses, opportunities, and threats in the implementation of youth empowerment programs and formulate strategies for implementing the Soppeng District Youth and Sports Service Youth Empowerment Program. This study uses the SWOT-AHP method with the descriptive translation then tabulated so as to give birth to a choice of strategies that are a priority or more important. The results of the study found that the strength (S), weakness (W), opportunity (O) and threat (T) groups in the four groups were higher (S) with a value of 0.4958 compared to weaknesses, opportunities, and threats, for threats with the lowest value is 0.0719. The global priority of 16 statements from each strength (S), weakness (W), opportunity (O) and threat (T), the highest value is a 0.5300 statement of weakness (W1) while the lowest value is a threat (T4) 0.0609. The priority groups that are the focus of strengthening the Soppeng District Dispora include the highest value of the SWOT group (Strengths, Weaknesses, Opportunities, and Threats) while the factors that have the highest common values are (Weakness, Opportunity, Threat and Strength). The implementation of the youth empowerment strategy program in Soppeng Regency run by the Dispora is inseparable from the influences of various aspects, both from strength and weakness (internal) and Opportunities and Threats (external). But the choice of the right strategy for Dispora or things that need to be strengthened from the four strategies ST1, ST2, ST3 and ST4, namely ST1 (SO). Awaken young people about the importance of empowerment can be carried out through seminars and provide training on the importance of empowerment, but the youth as objects and subjects must be aware of themselves that the future will be a legacy for them as a youth, especially youth in Soppeng Regency.
The effect of traffic volume on noise of housing and shopping area of Manggala District
Authors: Kamal N M , Jinca Y , Wunas S 
Published: May 2020

Abstract
Pollution includes environmental problems that threaten major cities in Indonesia, especially those originating from motor vehicle emissions and the effect of noise on health. This study aims to determine how the impact of traffic volume with noise by looking at the functional aspects of buildings along the road. This study measured the noise and data collection of traffic volume on the Main street in the neighbourhood between the sub-districts of Manggala, Makassar. Data collection comes from primary data, namely, data from research results and secondary data, library search. The results of the data collection were obtained, namely the volume of vehicles higher on Friday, namely on the road of DR J Leimena, which is 531 units of vehicles, the lowest in the Bukit Baruga housing estate. The more vehicles, the higher the noise level. The results of noise measurements at the research location indicate that in the Bukit Baruga residential area the maximum range is 53 dB, on the LAN 63 dB and the road Dr. J. Leimena - Jalan Antang Raya is around 65 dB, referring to KEP.48/MENLH/11/1996, November 25, 1996. The results of the communication disruption questionnaire are quite disturbing to the community. This study concludes that the noise level prediction model is directly proportional to the volume of traffic and is influenced by factors of road conditions (flat and elevation) and the distance from occupancy to the road.
Estimating the catchable size of orange-spotted grouper (Epinephelus coioides) in Kwandang Bay, Gorontalo Utara District, Indonesia
Authors: Achmad D S , Sudirman  , Jompa J , Nurdin M S 
Published: May 2020

Abstract
The orange-spotted grouper (Epinephelus coioides) is a valuable food fish. To support the sustainable management of orange-spotted grouper fisheries, it is important to determine the optimum catchable size. The purpose of this study was to determine an optimal catchable size for the orange-spotted grouper stock in Kwandang Bay, North Gorontalo District, Indonesia. The Catchable size was determined based on the size at first sexual maturity, fecundity, and reproductive potential. The study was conducted from December 2016 to November 2017. The size at first sexual maturity was estimated based on the examination of gonads from 141 specimens, while fecundity was estimated based on a sample of 40 female fish with ripe gonads. The mean total length (TL) at first maturity was 40 cm. Fecundity ranged from 30,526 - 1,395,846 eggs with a mean of 687,025 eggs. The reproductive potential was highest in the size range of 55-64 cm TL. The recommended size for orange-spotted grouper is above 64 cm, to enable females to attain their maximum level of egg production before capture and thus contribute to maintaining the stock.