bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coastal morphodynamic and assessments of coastal vulnerability index in Parepare bay
Authors: Sirajuddin H , Rivaldi B 
Published: February 2020

Abstract
The purpose of the study is to assessments the coastal vulnerability index in the Parepare bay, the beach is Lojie area, District of Mallusetasi, Barru Regency, Lumpue and Lapakaka areas, District of Bacukiki, City of Parepare South Sulawesi Province with including some aspect that is morphodynamic, coastal characteristic, hydro-oceanography, and coastal vulnerability index. Geomorphology in the study area was grouped in the formation of the morphology of terrain, wavy, and hills. Stratigraphically is composed of Parepare Volcanic rocks (Tppv), and Alluvial Deposits (Qa), divided into 4 rock units namely alluvial units, trachyte unit, tufa unit, and volcanic breccias. unit. Based on that, coastal characteristic in research area divisible in 3, that is rock coastal, sandy coastal and mud/mangrove coastal. Hydro-oceanography condition in research area that is about current with velocity of current average is 0,191 m/s with direct current is N 97° E (southeast), wave with average of high wave velocity of current average is 0,191 m/s with direct current is N 97° E (southeast), wave with average of high wave is 56,40 cm, velocity of wave is 2,4 m/s and wave maximum energy as big as 10368 joule, tide subsides in research area with high tide 1.3 meters and low subside is 0,6 meters with sea-level high 1 meters. Coastal morphodynamics and vulnerabilities of the Parepare Bay on the northern part of Lumpue Coastal, which was dominated by sand-sized sedimentary material, found multiple bars due to low/weak energy wave activity, sloping beach morphology, and predominantly residential areas. It is thus categorized as a dissipative type beach with a low level of vulnerability (CVI = 6). As for the south of the study area, the Lapakaka Coastal and Lojie Coastal are dominated by gravel and coarse-sized sedimentary material, found coral reef fragments due to high energy wave activity and mangrove found in coastal areas. Then this beach can be classified in the type of reflective with a high level of vulnerability (CVI = 53.66 n 37.94).
Experimental study the effect of turbulent flows in bend channels as to a result of vegetation groin structure on permeable type
Authors: Mansida A , Hatta M P , Pallu M S , Salintung M 
Published: February 2020

Abstract
Highly dynamic changes in flow regimes are caused by relatively high rainfall intensity, so that the excessive flood volume in the last ten years, and it is caused by watersheds experiencing a crisis or degradation due to conversion into economic and non-economic areas which ultimately impacts on river bank and beds by turbulent flow. The use of groin structure as a method of scouring prevention and channel flow control has not been able to fully meet the expectations of scouring prevention. We obtain the effect of changing the turbulent flow regime on the use of groins on the bent channel. Testing was conducted through laboratory experiments in artificial conditions to investigate the relationship between variables by providing certain treatments in several experimental groups with a comparative control of bend channel angle uses 60° with distance variations of groins and discharge; in addition, software Surfer used to describe scour contour pattern. Analysis of changes in flow behavior is done by using Froude (Fr) and Raynolds (Re) number approaches with the effect of turbulent flow on the bent channel scour. The results of the research indicate that the placement of the groins on the river bank channel bend causes a new phenomenon of turbulent flow with shear stress, resulting in local scouring around groin structure and the placement of looser permeable groin gives prevention 81% of river bank scour.
Flash flood modeling using the artificial neural network (Case study: Welang Watershed, Pasuruan District, Indonesia
Authors: Suhardi  , Hidayah E , Halik G 
Published: February 2020

Abstract
The Artificial Neural Network (ANN) has been widely used in flood modeling and has proven to be good accuracy. This research aims to flash flood modeling using ANN. The flash flood modeling was conducted at Welang Watershed, Pasuruan District, East Java, Indonesia. The input of flash flood using ANN consists of rainfall and runoff coefficient. The runoff coefficient was derived by the Normalized Difference Vegetation Index (NDVI) value from the Landsat 8 Operational Land Imager (OLI). The output ANN model was flash flood discharge. The ANN architecture model uses a backpropagation neural network. The period of training and testing model ANN using data from January to February 2017 period and November to December 2017 period, respectively. The Result of flash flood modeling with ANN showed the good of fitness pattern between output model and observation data.
Performing application of cooper-jacob method for identification of storativity
Authors: Pongmanda S , Suprapti A 
Published: February 2020

Abstract
Transmissivity is estimated by fitting a straight line between time versus drawdown on semi-logarithmic paper. The test data of both confined and unconfined aquifers were analyzed by many practitioners that are used cooper-Jacob method to estimate the drawdown equation, regardless of the differences between theoretical and practical conditions. The other parameter is storativity overestimated, so the aim of this research is to analyze ten pumping test data located in Makassar area by using cooper-Jacob’s (1946) time drawdown approximation of Theis method to estimate the aquifer parameters, also in order to determine the reasons which are affecting the reliability of the storativity value and obtain the important aspect behind that in practice. The pump well is installed to a depth of 20 m, the end is 2 meters into the hard consistency clay layer. The radius of the pump well used in a single well test to estimate the storativity value of the type of aquifer layer unconfined with the Cooper-Jacob method gives excessive value, but if the radius of the pump well is used larger by inserting the radius of the gravel filter layer is obtained a significant value that approaches the storativity value that has been estimated by Theis method uses one pump well and nine observation wells.
Effect of water discharge variation on water levels and flow characteristics in pipeline networks
Authors: Bachrun R , Pallu M S , Thaha M A , Bakri B 
Published: February 2020

Abstract
The ability of flow discharge is very necessary in pipeline. When changes in discharge flow in the pipe, the flow pattern and water level will be different. The design of test equipment used is a pipe network made of acrylic pipes with inner diameter (d1) 64 mm and (d2) 44 mm. The fluid used is standard water with a viscosity value of 1.14 cp, fat oil 0 mg/L, and specific gravity 1.0304 gr/cm3. Data collection on the testing pipeline is divided into 10 segments or 10 observation points (OP) per discharge. Variations of debits flowed are 0.5 liters/sec, 1.2 liters/sec, 3.5 liters/sec. The relationship between discharge and depth of flow or water level from the bottom of pipe and the relationship between discharge and flow velocity is directly proportional or linear. The greater of discharge value flowed resulted in a shift in the flow characteristics where the low discharge value, the laminar flow patterns and transitions and high discharge values of flow pattern becomes turbulent.
The resilience of asbuton material strength with immersion time used as core layer on a dam
Authors: Rahim H , Tjaronge M W , Thaha M A , Djamaluddin R 
Published: February 2020

Abstract
In order to increase the use of domestic materials, asbuton material which has a substantial reserve of 662,960 million tons in Buton Island becomes an alternative choice for using as a core layer on the dam. The asbuton material to be used in this research is Lawele Granular Asphalt (LGA). The laboratory result data to be analyzed relationship between the stability value with the immersion time, residual stability value with the immersion time and the value of the flow with the time of immersion of asbuton material. The results showed that the value of stability and flow of asbuton material after soaking tends to be stable, it indicates that the strength and flexibility of asbuton material are not affected by water immersion. The percentage of residual stability to each immersion time varies and the value of stability loss is relatively small, so until the 56th-day immersion the remaining percentage of stability loss is less.
Three dimension deformation analysis of Jatigede Dam
Authors: Minmahddun A , Ngii E 
Published: February 2020

Abstract
In large dams, the reservoir water level will become a large hydrostatic pressure and reduce the effective stress due to the effect of seepage on the dam body. The total stress that occurs can cause deformation in the dam body to exceed the allowable deformation. Therefore, it is necessary to evaluate the deformation of the dam to know the stability of the dam. This research aimed to analyze the deformation of the dam in a steady-state seepage condition. The reservoir water level was modeled on minimum, normal, and flooded water levels. The deformation was analyzed using the three-dimension finite element method. Deformation analysis results show that the deformation increased when the reservoir water level increased. Significant deformation increase occurred in x-direction deformation i.e. 0.27 m at minimum water level, 0.55 m at normal water level and 0.55 m at flooded water level. The deformation obtained from the analysis still required the maximum deformation criteria of 2 m, which is half of the freeboard.
Wave reflection and transmission test with pipe wall roughness and without roughness on the perforated breakwater
Authors: Syamsuri A M , Suriamihardja D , Thaha M A , Rachman T 
Published: February 2020

Abstract
Waves towards the shore that have a porous breakwater building will experience reflection and transmission, to determine the height of reflection and transmission wave is needed a study by the process of generating waves on the flume with a porous breakwater building, the effect of wave changes in its propagation requires an experiment in the laboratory. This study was aimed to determine the height ratio of reflection and transmission wave by using a model of pipe structure as a wave reducer by adding the friction plane of the roughness of the walls in the pipe. A method of laboratory experiment on the wave generation flume has several variations consisting of 3 periods (T; 1,0 seconds, T; 1,1 seconds, T; 1.2 seconds) and 3 water depth (d) are 15, 30 and 36 cm, stroke to regulate the flap motion that determines the wave height (H) as a wave generator that is 4, 5 and 6 by comparing the model that uses pipe wall roughness and without roughness. The result of testing indicates that the height of reflection wave (Hr) and transmission (Ht) is strongly influenced by the period (T). If the period increases, Hr and Ht significantly decrease, the height ratio of reflection wave using pipe wall roughness is greater than without roughness. However, it inversely proportional to the height of transmission wave (Ht) were a model using pipe roughness is more efficient to reduce Ht than a model without pipe roughness.
An investigation of fall accident in a high-rise building project
Authors: Arifuddin R , Latief R U , Suraji A 
Published: February 2020

Abstract
Fall accident is an accident category that becomes a primary cause of fatal and nonfatal injuries among construction workers worldwide. The objectives of the paper are to report the results of a study investigating 100 reports of fall accidents in the high-rise building project in Indonesia. The study concludes that the impact/consequence of the fall accident mostly occurring involves a fatality, causing death (56%), major injuries, causing permanent physical defect (28%), and minor injuries, causing temporary wound (16%). The main factors of fall accidents causation are mostly related to personal factors (61%) and non-personal factors (30%). It was found that fall accidents mainly take place in the area of scaffoldings (52%), area of structure (28%), and area of working structure (20%). The fall accidents occurred mostly during afternoon time (42%), followed morning time (27%), and evening time (21%), and workers who are 20 – 30 years old and under 20 years old get a higher risk of getting accidents. The findings will be a recommendation to construction companies for developing effective safety programs for the prevention of fall accidents.
Air dispersion modelling of gas turbine power plant emissions in Makassar by using AERMOD
Authors: Zakaria R , Aly S H , Annisa  
Published: February 2020

Abstract
Activities at PT. PLN (Persero) Makassar Tello Sector especially Gas Turbine Power Plant produces exhaust emissions that can be pollution for the environment if the quality is not monitored. Therefore, an analysis of the pattern distribution of exhaust emissions in Gas Turbine Power Plant needs to be done to determine the concentration produced and dispersion pattern and direction of its spread. The modeling in this study uses AERMOD software and requires meteorological support data and ground elevation to run the software. The results showed that the distribution of SO2, NO2, CO, and particulates gas pollutants was in line with the dominant wind direction found in windrose. The concentration received by the receptors is very small and does not exceed the ambient air quality standards based on South Sulawesi Governor Regulation Number 69 of 2010 which is 365 μg/Nm3 for SO2, 150 μg/Nm3 for NO2, 10,000 μg/Nm3 for CO, and 230 μg/Nm3 for particulates. Thus, the impact received by the receptor is not felt directly.
Analysis of e-waste components at a computer service center of Makassar City
Authors: Lando A T , Abdurrahman M A , Arifin A N , Utami R 
Published: February 2020

Abstract
E-waste is a waste of electronic devices where its number of generation continues to increase in the world. However, improper processing of e-waste in developing countries, such as Indonesia, especially from computing devices, can lead to adverse human health effects and environmental pollution. Therefore, the aims of this study are to determine the generation, composition, material flow, and management of e-waste of computer devices produced by 19 stores in a computer service center of Makassar City. Analysis of this study is based on Indonesian Government Regulation No. 101 of 2014 on the Management of Hazardous and Toxic Waste. The results of this study showed that the generation of e-waste from a computer service centre was 4.340 kg/store/day with 60.34% of plastic, 23.88% of metal, 7.81% of metal and plastic, 4.18% of metal and rubber, 3.62% of glass and 0.17% of rubber. Material flows of e-waste generation in the computer service centre are divided into sold to e-waste collectors, kept in stores, brought back by customers, and disposed of, with 38.69%, 30.75%, 26.55%, and 4.01%, respectively. Moreover, specific e-waste management needs to be done by segregating the e-waste from other types of waste by arranging waste transport time and providing a special disposal site.
Analysis of infrastructure needs and operational systems for traditional market solid waste management (A case study on Makassar – Niaga Daya traditional market)
Authors: Mangarengi N A P , Zubair A , Abdurrahman M A 
Published: February 2020

Abstract
Municipal authorities in developing countries face a challenge in managing solid waste. The challenging is mainly due to the increasing generation of waste that is not followed by the improvement of infrastructure and operational systems. The city of Makassar has also experienced the problem. Solid waste, especially in the traditional market, has not adequately managed, resulting in a complex waste management issue. The study is purposely to calculate the volume of solid waste generation and to assess the infrastructure and management systems, including trash cans, collection, temporary solid waste disposal in the form of container and transportation. The results show as follows: The total volume of Niaga Daya’s market solid waste is 9000 l/day. The infrastructure required is 600 pieces of trash cans in which every stall needs 1, four carts, and two containers, transporting solid waste once a day to landfill. Optimization solid waste operational activities will be maximized by adding the number of service rations, additional work time, adding labor, and increasing the number of temporary solid waste disposal and transportation.
Evaluation of the effectiveness of wastewater treatment plant for super-intensive shrimp farms (A case study on Punaga Village, Takalar)
Authors: Mangarengi N A P , Selintung M , Zubair A , Ahmad F 
Published: February 2020

Abstract
Wastewater becomes a problem if it is not appropriately treated. Shrimp farms are one of the examples of an industry that produces wastewater. Super Intensive farms usually have a high concentration of wastewater pollution and above the threshold required. Therefore, this study aims to evaluate wastewater changes from super-intensive farms to wastewater treatment plants (WWTP) and evaluate the effectivity of WWTP to treat the wastewater. The study was done through laboratory texting (ex-situ) and field (in-situ). This type of research using the descriptive method, describing the characteristics that systematically determined. This study uses purposive sampling method and integrated sampling for six weeks in the Wastewater Treatment Plant (WWTP) unit and raw water from the reservoir of a super-intensive pond. Research has been conducted from May to June 2016. The result found that the effluent of wastewater from super-intensive farms tends to increase or contaminated with pollutants such as waste metabolites, un-eaten nutrient waste by fish, and waste detritus. Based on optimum standards of environmental sanitation by the Ministry of Health in 2011, it shows that the effectiveness is more likely to decrease the pollutant (already efficient: 60% < x = 80%). The effe ct ive ness o f TSS parameter is efficient enough by 63.4%, TN 60.0%, Phosphate (PO4) 59.21%, 64.07% BOD. Nevertheless, the effectiveness of TOM parameter based on the optimum standards allowed by the Ministry of Environment 51 2004 is 15.45%, which is inefficient (x = <20%); the parameter of pH is 3.67% and DO 17.01%. Both parameters of pH and DO are more likely to increase or quite efficient. According to KEP28 / MEN / 2004 regarding Shrimp Effluent Quality standards and the results bioassay test, there were 100% of Survival Rate (SR), and it was in good condition for the medium term for 96 hours (4 days).
Investigation of CO emissions on alternative car free day roads in the city of Makassar
Authors: Zakaria R , Pasra M , Herliani  
Published: February 2020

Abstract
Car Free Day is a movement to reduce the level of air pollution in big cities around the world caused by the emission load of vehicles. The event gives motorists and commuters an idea of their locality with fewer cars. Vehicles produce CO emissions from the fuel combustion process. This research was conducted on alternative roads in 3 Car Free Day locations in Makassar City, which are 1) Boulevard with an alternative road Ance Daeng Ngoyo, 2) Sudirman with an alternative road Karunrung and 3) Losari Beach with an alternative road Hj. Saleh Daeng Tompo. Analysis of measurement data using the method of the number of vehicles and Indonesia’s emission factors and Indian emission factors. The results of the study show that the CO emission load on Jl. Ance Daeng Ngoyo and Jl. Karunrung, when Car Free Day (Sunday) is smaller than Non Car Free Day (Monday) while on Jl. Hj Saleh Daeng Tompo when Car Free Day (Sunday) is greater than Non Car Free Day (Monday). The results of statistical tests also showed that there were no significant differences when Car Free Day (Sunday) and Non Car Free Day (Monday).
Investigation of CO emissions on school areas based on Caline-4
Authors: Aly S H , Amiruddin A A , Winardhy D Y 
Published: February 2020

Abstract
The school located near the city’s main transportation line at first profitable for the school because the location is easy to reach. From the location of the school is considered strategic but not fit with convenience of studying in school, the problem arises that the location close to the main road tends to have a higher level of air pollution and leads to impact the students at school. The purpose of this research is to know the level of carbon monoxide at the school area uses modelling CALINE-4 and the pattern of distribution of emission CO at school area with CALINE-4. This research was done in three locations for three days namely MAN 2 Model Makassar, SMA Negeri 11 Makassar and SMP Negeri 4 Makassar. Analysis of the distribution of Carbon Monoxide CO emissions using Caline 4. The largest result of Carbon Monoxide (CO) pollutants in MAN 2 Model Makassar at 05:00 pm, namely the b receptor is beside the school at as much as 9 ppm. In SMAN 11 Makassar, the biggest carbon monoxide (CO) pollutant was at 07:00 pm the two receptors in front of the school as much as 2.2 ppm. And in SMPN 4 Makassar, the biggest carbon monoxide (CO) pollutant was at 06:00 am the receptor in front of the school as much as 3.1 ppm. The pattern of distribution of CO concentration is influenced by the wind speed and wind direction affecting the pattern of the distribution of these pollutants. The faster the wind blows, the spread of pollutants is faster with a wide range.
Laboratory study on the effect of leachate type to swelling behavior of bentonite
Authors: Sari K , Ridwan I , Lando A T 
Published: February 2020

Abstract
Bentonite is well known as highly plastic, swelling clay material, the product of volcanic ash. An experimental test of the effect of leachate type on swelling behavior of bentonite has been conducted. Four types of liquids, tap water, 10 g/l of NaCl solution, 11.1 g/l of CaCl2 solution, and 100 ml/l of ethanol solution were used in the tests. Liquid limit, plastic limit, free swelling index, and swelling pressure tests were carried out to evaluate the relative swelling ability of bentonite when interacted with different leachate types. The result of free swelling tests indicated bentonite swelled higher when interacted with tap water and ethanol solution compare with NaCl solution and CaCl2 solution as a liquid. The value of liquid limit and plastic limit of bentonite for ethanol solution and CaCl2 solution were highest and lowest among liquid tested, respectively. The result also showed that bentonite has the highest swelling pressure when contacted with tap water but opposite for NaCl solution.