bluuebunny/crossref_metadata_2025_split huggingface dataset:
Minimum legal size of commercially important groupers in the Coral Triangle Sulawesi Sea, Indonesia
Authors: Achmad D S , Nurdin M S , Jompa J , Taslim I , Sari Novita 
Published: December 2023

Abstract
Major challenges facing grouper fisheries in Kwandang Bay within the Coral Triangle include declines in potential spawners and as well as in the abundance of juvenile fish. One measure that can be taken to maintain valuable fisheries stocks such as groupers is to regulate the minimum legal size (MLS). The aim of this research was to identify and analyse the mean size at first maturity (Lm50) as a basis for setting an MLS for three grouper species of commercial importance. A total of 525 grouper specimens (307 Variola albimarginata, 90 Variola louti, and 128 Plectropomus leopardus) were collected from January to October 2022 from grouper traders, traditional markets, and the Kwandang Fishing Port. The Lm50 for each species was calculated using the Spearman-Karber formula. The Kwandang Bay catch was dominated by immature juvenile fish and the size class contributing the most individuals was below the Lm50 for all three grouper species. The MLS should be at least 32 cm for V. albimarginata, 33 cm for V. louti and 35 cm for P. leopardus in order to enable sufficient fish to spawn at least once, increase the number of spawners, and thereby maintain stock abundance.
The Performance of Anidolic Light Pipe Daylighting System in Office Building (Case Study : Bosowa Tower Makassar)
Authors: Utari Puspita , Hamzah Baharuddin , Jamala Nurul 
Published: December 2023

Abstract
Producing available daylight in buildings is an important issue for reasons of energy efficiency. To make an office space that is comfortable for employees, the concept of daylighting quality must be considered. This research aims to examine intensity of natural lighting in the workspace of Bosowa Tower Makassar, and apply Anidolic Light Pipe (ALP) daylighting system in reducing the illumination value in the building perimeter area and increasing the illumination value in the deeper area. The research used quantitative methods, collecting information about measurements of the workspace’s existing condition and evaluating ALP performance on a physical model. The building’s south and north sides indicated high illumination values, especially under clear sky condition. On the other hand, the deeper part of the building receives little natural light and is therefore rather dark. According to ALP performance tests with physical scale model simulation in an overcast sky condition, it can be concluded that this daylighting system can reduce the illumination value by 15,01% at a distance of 0,5 m from the window due to its shading external, and was able to increase the illumination value by 394,92% at a distance of 11,5 m from the window.
Analyzing Total Suspended Particulate at AP Pettarani Street in Makassar City
Authors: Malik S P H , Zakaria R , Harusi N M R 
Published: December 2023

Abstract
AP Pettarani Street is one of the main roads that is the center of activity in urban areas in Makassar City. The area on this road segment is almost entirely commercial and office area. This causes high motor vehicle traffic activity and frequent traffic jams. This activity can lead to decreased air quality as well as human health problems. One of the air pollutants is Total Suspended Particulate (TSP). This study was conducted to determine the concentration of TSP in ambient air and complaints of health problems felt by the people around AP Pettarani Street. There are six street points as TSP sampling sites and questionnaires. Measurements were carried out using the HVAS (High Volume Air Sampler) for TSP concentration and Google Form to distribute questionnaires to the community around the AP Pettarani Street Section. The results of the study showed that the concentration of TSP in the AP Pettarani Street of Makassar City ranged between 183.93 g/Nm3 - 301.64 g/Nm3. Furthermore, the health complaints perceived by the community around the AP Pettarani Street are still in a low scale – very low, but it is still recommended that the public continue to wear masks while outdoors to reduce the risk of health disturbances due to particulate dust.
Sustainability of Cocoa Farming from the Perspective of Farmers in Luwu District, South Sulawesi Province
Authors: Suardi Dian , Mahyudin  , Arsal Ariady , Munir Abdul Razak , Abdullah Agustina , Heliawaty  
Published: December 2023

Abstract
Low productivity can have an impact on farmers’ income and welfare and can trigger a decline in farmers’ interest in cocoa farming. BPS data shows that one of the cocoa production centres in South Sulawesi is experiencing a decline, namely Luwu Regency. Low productivity is considered the root cause of sustainability issues related to cocoa farming. This study aims to assess the sustainability of cocoa farming from the perspective of farmers in Luwu Regency. The research method used is descriptive with qualitative and quantitative approaches and uses SEM analysis with SmartPLS 3.0 software. The results showed that Economic Aspects (X1) had a positive and significant effect on the Sustainability of Cocoa Farming (Y), with a coefficient = 0.285, and P-Values = 0.018 < 0.05 while Social Aspects (X2) had a positive and significant effect on the Sustainability of Cocoa Farming (Y), with a coefficient value = 0.268, and P-Values = 0.018 < 0.05 and Environmental Aspects (X1) had a positive and significant effect on the Sustainability of Cocoa Farming (Y). 0.05 and Environmental Aspects (X3) have a positive and significant effect on the Sustainability of Cocoa Farming (Y), with a coefficient value = 0.270, and P-Values = 0.012 < 0.05.
Home Development in Relation to Spatial Functions Infisherman’s House
Authors: Asmal Idawarni , Syarif Edward , Amin Samsuddin , yahya M. , Asmal Sapta , Rivai Fridawaty , Latief Rudi , Ridwan  
Published: December 2023

Abstract
The stilt house model is a very suitable form to be developed in coastal areas known to experience frequent flooding. In addition, the model is very flexible to create because it saves land and construction costs. In developing space that takes up the area under the house (underneath), the homeowners are different in their implementation but adapt to various things such as the economy, family needs, and space availability. This paper aims to determine the form of changes in the function of space due to the development of family needs related to the material used. Research using phenomenology methodology. The data collection techniques were through in-depth observation, interviewing the community, and distributing questionnaires. Data analysis techniques using descriptive and correlation. Correlation analysis aims to see the relationship between related variables, namely the function of the development space with the material used and the part being developed. After that, a discussion was held to see or relate it to previous research regarding the suitability or incompatibility with the research results. As a result, homeowners generally develop the house by closing the pit, starting from the middle to the back. Generally, the function of the additional space is for service activities. Generally, they also use brick materials, and from the correlation, there is a significant relationship between work, income, and development room. The conclusion is that the development of the kolong space is influenced by the action of residential space requirements due to physical growth and the development of the number of family members and is supported by the economic development of the homeowner.
The strategy of handling the settlements for Under-resourced neighbourhood/area fishermen’s of Tallo Village
Authors: Maknun Agus A.P , Asmal Idawarni , Yahya M. 
Published: December 2023

Abstract
Tallo Village, Agampacayya area is one of the Under-resourced neighbourhood/area areas in Makassar City, South Sulawesi Province. The District Government categorizes the area as a Under-resourced neighbourhood/area area following regional regulations from 2015 to 2020. Over time, the area has increased because Tallo Village is located in a strategic economic area, the Center for Trade, Trade and Services Economy, Makassar City, South Sulawesi. Physical development took place in this area without any planning process. This impacts the deviation of the use of space, resulting in the inadequate arrangement of buildings in this area. However, the response from stakeholders (government, community and private sector) has been slow. It will have a massive environmental degradation impact on the coastal area of Agampacayya, Tallo Vilage. This study aimed to formulate a strategy for developing Under-resourced neighbourhood/area settlements in Tallo Vilage, Kampung Nelayan. This descriptive research used two analysis methods: quantitatively to answer the first problem and qualitatively to answer the second and third problems. The results showed that the settlement of Kampung Nelayan, Tallo Village was included in the village typology with a medium to high category of Under-resourced neighbourhood/areas. The SWOT analysis results show that handling Under-resourced neighbourhood/area settlements in Kampung Nelayan Tallo Village can be done through strategic combinations of strengths and opportunities to overcome existing weaknesses and threats. The results of the calculation of the strategy formulation show that handling the treatment of Kampung Nelayan Under-resourced neighbourhood/areas prioritizes strategies from a combination of strengths (S) - Opportunities (O) for the development of Under-resourced neighbourhood/area settlements in Kampung Nalayan Tallo Village.
Water Chemical Analysis of Surface Water Runoff from Iron Ore Mine Void at Tanjung – Bone, South Sulawesi.
Authors: Nurhikmah  , Ramli M , Sufriadin  , Saputra A 
Published: December 2023

Abstract
The main problem in open-pit mining activities is the remaining mine openings as voids after mining activities end. The interaction between rock, water and air can cause dissolved rock chemical elements to cause polluted water. A study of this phenomenon was carried out in a void in the Tanjung area. An abandoned iron ore mine left a void with a depth of 13 meters. Furthermore, around the void existed two stockpiles of mined ore. Therefore, the void and the stockpiles may act as pollutant sources that can reduce surface water quality. In the rainy season, the water from the void flows out as a runoff downstream through a tributary. This study is intended to analyze the chemical concentration of runoff water from the void. Field observation was done to identify rock formation, and measured pH, turbidity, total dissolved solids (TDS), and electrical conductivity(EC) of water on site, and collected 10 water samples from the river and tributary. Field data was completed with laboratory chemical analysis for water major elements of K+, Na+, Ca2+, Mg2+, Cl−, SO4
2−, CO3
2− and HCO3. The results of the analysis of the TDS test with a minimum value of 4 mg/l and a maximum of 607 mg/l. turbidity value 0 to 21.4 NTU, pH value 2.9 to 8.2, EC value 165.6 ms/cm to 316 ms/cm. Plotting the concentration of the major elements into Trilinear Piper Diagram shows that water is as CaMgSO4 water type based on their major elements. Changes in water quality at voids, stockpiles and areas around the mine indicate that potential water pollution is generated from existing stockpiles.
Fish waste-derived biomaterial as a support of zero waste and Sustainable Development Goals (SDGs)
Authors: Fendi F , Abdullah B , Suryani S , Raya I , Tahir D 
Published: December 2023

Abstract
Fish is a source of animal protein consumed by people worldwide. Its use for health and abundant fish production makes some countries or regions have high consumption compared to other animal protein sources. This study aims to review the potential of fish as a biomaterial to support zero waste and achieve the SDGs. This study reviews journals originating from Science Direct in narrative reviews of skin, scale, and bone waste from fish as biomaterials and the connection between zero waste efforts and SDGs. This study found that fish waste can be recycled into collagen, gelatin, hydroxyapatite, and calcium phosphate as biomaterials for bone tissue engineering, drug delivery, health, cosmetic, food, and pharmaceutical industries. It supports zero waste efforts and the achievement of SDGs in good health and well-being, responsible production and consumption, and decent work and economic growth.
The 4th International Conference of Geoscience and Earth Resources Engineering (ICGERE) 2022: Sustainable Energy and Future Development Through Geoscience and Earth Resources Engineering (Preface)
Authors: Zulfakriza  , Yahya Andy M. , Safrizal  , Alaywiyah Susanti , Wattimena Ridho K. 
Published: December 2023

The 4th International Conference on Geoscience and Earth Resources Engineering is being organized by the Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung. The conference’s theme focuses on “Sustainable energy and future development through geoscience and earth resources engineering,” covering a range of new insights and techniques in these fields. Subtopics include mining engineering, drilling engineering, oil and gas production management, earth resources exploration, seismology, metallurgical engineering, applied geophysics & exploration, and geothermal engineering. The conference aims to bring together experts and researchers from various disciplines to exchange knowledge and discuss the latest advancements in geoscience and earth resources engineering.
The conference took place from November 8-9, 2022 in Bandung, Indonesia. It was held in a hybrid format due to the challenges posed by the Covid-19 pandemic.
The conference was held in a hybrid format from November 8-9, 2022 in Bandung, Indonesia due to the challenges posed by the Covid-19 pandemic.
The conference was attended by 13 invited speakers from various institutions and countries, including:
1. Ir. Nenny Miryani Saptadji, Ph.D (Outlook on Indonesia Geothermal Energy Technology)
2. Prof. Peyman Mostaghimi (Applied Machine Learning for Fluid Flow in Porous Media)
3. Prof. Andri Dian Nugraha (Seismic Tomography Outlook for Exploration and Earth Hazard Mitigation)
4. Prof. Dr. Frank Melcher (The European Green Deal: The Role of Mineral Raw Materials)
5. Prof. Suleiman Omeiza Eku Sadiku (The Current Flood Disaster in Nigeria)
6. Prof. Johnson Kayode Adewumi (The impact of Flooding on Agricultural production and Food Security: Nigeria Context)
7. Assoc. Prof. Vamegh Rasouli (Petroleum Geomechanics and its Application in Carbon Geosequestration)
8. Prof. Doddy Abdassah, M.Sc., Ph.D (Unconventional Oil and Gas in Indonesia)
9. Dr. Aryo P. Wibowo
10. Prof. Jean Phillpe Metaxian (DAS for Volcano monitoring)
11. Dr. Ing. Zulfiadi, S.T., M.T., IPM (Sustainability in the Production of Nickel, Iron, and Aluminum)
12. Engr. ThankGod Egbe (Integrated Petroleum Engineering Practice: Niger Delta Mature Assets Experience)
13. Prof. Mukhtar Abdulkadir
And more than 65 contributed presenters. The output of the conference is well documented in the extended abstract of 37 reviewed papers and 33 paper are accepted. The conference proceeding can be beneficial for the authors, institutions, and worldwide scientific communities.
List of The Organizing Committee are available in this pdf.
Dynamic recrystallization study of the ultramafic rock of the Malili-Wasuponda mélange complex (South Sulawesi) and Wolo cape (Southeast Sulawesi), Indonesia
Authors: Permana H , Awdia S A , Patonah A , Solihin S 
Published: December 2023

Abstract
The ultramafic rock of the Wasuponda mélange complex and the Wolo cape areas, Sulawesi classified as lhezolite, harzburgite, dunite, olivine websterite, wherlite and serpentinite. The rocks have undergone dynamic recrystallization through bulging, subgrain rotation and grain boundary migration. The olivine neoblast grain size varies from a very fine size to a mean size of around 75 μm and a mean size range of 150, 225, 300 and 425 μm. The neoblast grain size indicates that dynamic recrystallization took place with various stress at about 13 MPa to 52 MPa. The optimum recrystallization of the Malili-Wasuponda peridotite occurs at 52 MPa, while rock peridotite of the Wolo cape formed at optimum stress reached 30-32 MPa.
Aquifer hydraulic conductivity characterization by inflatable packer method in the underground coal gasification process
Authors: Madiutomo Nendaryono , Umar Datin Fatia , Zulfahmi Z. , Daranin Edwin Akhdiat , Setiawan Liston , Gunawan  , Wijaya Truman 
Published: December 2023

Abstract
Underground coal gasification technology is a technology that converts coal into gaseous products through the gasification process. UCG technology is known as clean energy technology. The potential risk of UCG that can occur is groundwater contamination, this is due to gas leaking into the rock layers and the aquifer above it. An important parameter of groundwater contamination is hydraulic conductivity, obtained by the double inflatable packer method. The test results of aquifer-03 (142-151 m), the hydraulic conductivity value is 1.82 e-6 m/s - 2.16 e-6 m/s, the aquifer zone order range from the upper limit to the lower limit tends to be homogeneous in sand lithology. fine. The top layer of aquifer-04 (213-230 m), is silt lithology, the middle is silty sand lithology and the bottom is silty sand lithology. The hydraulic conductivity value is 1.22 e-6 m/s - 3.88 e-8 m/s, the range is quite wide with a difference of 2 orders, this is due to differences in grain lithological composition with finger type aquifer layers and are not interconnected. If there is a gas leak, then aquifer-03 lithology is more affected as a medium for spreading groundwater pollution than aquifer-04 lithology.
Evaluation of Carbonate Reservoir with Integration of Petrophysical Analysis and Seismic Impedance Inversion in Banggai Basin, Sulawesi
Authors: Nainggolan T B , Halawa N I T P S 
Published: December 2023

Abstract
Banggai Basin is controlled by the collision between Banggai-Sula micro-continent and East Sulawesi ophiolite belt, forming a thrust-sheet anticline structure that has potential to trap hydrocarbon. The Siotu-1 well was drilled right into the thrust-sheet anticline structure targeting Miocene carbonate platform layer. The same structure has proven to be an oil trap at the Tiaka oilfield which is located adjacent to the Siotu-1 well. This study aims to evaluate the presence of hydrocarbon in the Siotu-1 well with characterization of the Miocene carbonate reservoir. It is carried out by integrating petrophysical analysis from the Siotu-1 well log data and 2D seismic impedance inversion of the Tarib-1 line. Five reservoir zones have shale content values range of 21.91-37.53%, effective porosity values range of 9.7-14.62%, water saturation values range of 88.5-98.27%, and permeability values range of 2.53-8.16 mD. The results of the porosity calculation are validated by the model of seismic inversion where the reservoir zone with an acoustic impedance in the range of 7600-13450 ((m/s)/(g/cc)) is a carbonate layer with fair to excellent porosity (10 to> 25%) and reservoir zone with acoustic impedance values range of 13450-16200 ((m/s)/(g/cc)) as carbonate layer with poor porosity (< 10%). The net pay zone in reservoir zone 4 with a thickness of 4.5 feet and a net-to-gross of 0.006 are shown as the lumping result. It is concluded that Miocene carbonate reservoir in the Siotu-1 well met the criteria as a good reservoir rock but insignificant of hydrocarbon potential for further development.
Dynamic factor of safety of rock slopes due to blasting based on critical displacement and critical acceleration
Authors: Kiramang N , Prassetyo S H , Karian T , Simangunsong G M 
Published: December 2023

Abstract
Analysis of slope stability due to blasting based on the pseudostatic principle is considered too conservative because the slope receives a constant maximum seismic load (and hence constant acceleration) without considering the duration of the blast. In reality, the acceleration fluctuates with time and eventually diminishes. One method to analyze the stability of rock slopes due to blasting is to conduct dynamic simulations using Newmark displacement analysis to obtain the dynamic Factor of Safety (FoS) based on the magnitude of critical displacement (ucrit
) and critical acceleration (acrit
). This study was carried out using hypothetical slopes of various rock mass strengths determined from the Rock Mass Rating (RMR). A case study of a highway rock slope excavated using the drill-and-blast method was also carried out to validate the research results. The findings reveal that very good rock (RMR Class I) has FoSdynamic = 11.7, ucrit
= 6 mm, and acrit
= 0.061g, while very poor rock (RMR V) has FoSdynamic = 1.7, ucrit
= 16 mm, and acrit
= 0.035g. This result indicates that the smaller the strength of the rock mass, the smaller the critical acceleration and the greater the value of the critical displacement will be. This study reinforces the significance of critical displacement and critical acceleration in assessing the dynamic stability of rock slopes due to blasting.
Determination of Porosity and Formation Resistivity Factor for a Leachate-Saturated Waste
Authors: Rizka  , Santoso D. , Warsa  , Mustofa M.B. 
Published: December 2023

Abstract
The factors of porosity and formation resistivity have a strong influence on the process of electric current conduction through saturated porous media. In this study, laboratory experiments were carried out to calculate the resistivity formation factor from electrical resistivity measurements for leachate-saturated waste in samples collected from the Bakung landfill in Bandar Lampung. The formation resistivity factor is calculated using the Archie equation by calculating the representative value of the intercept (a) and the cementation factor (m) as used by Archie in the derivative relationship between the formation resistivity factor (F) and porosity (ϕ). This study investigates the impact of leachate spatial distribution on electrical resistivity. Electrical resistivity and porosity were measured in 27 soil samples. Each soil sample was subjected to three treatments: without leachate injection, unsaturated leachate injection (physical modelling), and fully saturated leachate injection (physical modelling). The results show that resistivity formation factors and porosity have a relationship. The values of ‘a’ and ‘m’ were determined at the study site based on the relationship between formation factors and porosity. The findings should create new insights into applied geophysics.