bluuebunny/crossref_metadata_2025_split huggingface dataset:
3D Modelling of Sanggrahan Temple Using UAV Imagery and Terrestrial Photogrammetry Method
Authors: Bioresita Filsa , Hidayat Husnul , Kurniawan Juan Rivaldi , Purnomo Setyo , Grussenmeyer Pierre 
Published: December 2023

Abstract
As evidence of ancient Majapahit civilization existence, Sanggrahan Temple has been officially recognized as a cultural heritage building by Indonesian government in 2019. Sanggrahan temple is located in Boyolangu District, Tulungagung Regency, East Java. Conservation efforts in Sanggrahan temple have been done by BPK Wilayah XI Jawa Timur. Many parts of the temple have been damaged and are believed in different condition from its past original design. Therefore, a 3D documentation of Sanggrahan Temple needs to be carried out to provide sufficient data for future conservation efforts. The photogrammetry method which utilizes UAV (Unmanned Aerial Vehicles) and terrestrial imagery offers great efficiency in terms of fieldwork and cost. The technique applied close range photogrammetry for image-acquisition and Structure from Motion (SfM) processing. There are roughly 500 images captured for 3D modelling purposes. For georeferencing and geometric accuracy assessment, the Ground Control Point measurement was also carried out using GPS receiver and total station. The result show that the combination of aerial (UAV) and terrestrial images provide complete 3D model. The generated 3D model can provide architectural views of the temple from all sides which help architects and archaeologists to interpret architectural design and detail of the building. Accuracy assessment based on the coordinate measurement shows that the 3D model results meet the specified accuracy standard of 10 cm which is suitable for many architectural drawing applications.
Study The Effectiveness of Reservoir Utilization In The Fishpond Water Management System In Maintaining Salinity For Fishpond Cultivation
Authors: Riadi A , Triatmadja R , Yuwono N 
Published: December 2023

Abstract
The growing global population has led to an increased demand for food to meet humanity’s needs. However, the degradation of productive land presents a significant challenge regarding ensuring food availability. The utilization of wetlands has emerged as a feasible alternative. As the second-longest coastline in the world, Indonesia holds great potential for wetland development, for instance, fishpond. Nevertheless, the prevailing extensive traditional fishponds have low productivity and fail to maximize profits. Therefore, shifting towards more intensive cultivation methods is necessary to enhance productivity and increase profitability. This study aims to evaluate the effectiveness of reservoirs in maintaining salinity levels, aiming for technological improvement in semi-intensive fishponds. A water system model in the pond irrigation area is utilized to accomplish this. The model consists of two variations: Model 1, which includes rivers and channels, and Model 2, which combines rivers, channels, and reservoirs. The study results indicate that integrating reservoirs into the water system can significantly enhance salinity distribution. Model 2, which combines the reservoir component, demonstrates superior salinity dispersion. Furthermore, this enhanced dispersion persists over a longer period. These findings underscore the potential of reservoir utilization to improve the effectiveness of semi-intensive fishponds and their overall productivity.
Analysis of Abrasion Hazards on the Batupoaro Coast, Baubau City
Authors: Sriwardani R , Harimudin J , Nurgiantoro  , Sutikno  
Published: December 2023

Abstract
The coastal area of Batupoaro Sub-district is a strategic location but vulnerable to sea waves and abrasion. In early 2022, high waves hit the coast of Baubau City, including the Batupoaro coast. The waves have caused damage to infrastructure at several points of the coast and have even caused impacts on the people who live around the coast. This research is dedicated to examining abrasion hazard for disaster mitigation, with the aim of analyzing the condition of the coastal area and the level of abrasion hazard on the Batupuaro coast using qualitative descriptive analysis and abrasion hazard index analysis. The results showed that social conditions on the coast of Batupoaro are fishing activities, seaweed cultivation, tourism, public spaces, and transactional activities. While the physical condition is that there are several coastal protection buildings damaged by sea waves, then in several other locations abrasion has occurred, especially in segments that do not have coastal protection. Then in the results of the analysis of the level of abrasion hazard for each segment in the Batupoaro coastal area, all of them are categorized as high, this result is obtained from the assessment of abrasion hazard based on five parameters such as wave height, current speed, vegetation density, beach profile, and beach typology.
Worldwide Status of Geoportal and Geospatial Data Completeness at National Geoportals
Authors: Budi S. , Sutanta H 
Published: December 2023

Abstract
Geoportal is a specific web portal used to share geospatial datasets. It is part of a National Spatial Data Infrastructure (NSDI) which is used to disseminate geospatial data. In the NSDI framework, a geoportal is a platform where citizens can search, discover, and access geospatial datasets. Therefore, the availability of geoportal is an essential element in an NSDI. Further, the availability of geospatial datasets, particularly fundamental datasets, is indispensable. This paper aims to portray the worldwide status of geoportal and the completeness of fundamental datasets in those geoportals. We surveyed the availability of geoportal in the 193 countries in the world. We identify and list geoportal addresses worldwide. For every geoportal, we check the types of fundamental datasets available. Fourteen fundamental datasets have been identified and used as a benchmark. The availability of geoportal and fundamental datasets were then calculated and analysed. We found 105 countries in the world own geoportal. Of these geoportals, there were, on average, 63% fundamental datasets available. Only nine countries provide all fourteen fundamental datasets. Twenty-nine countries provide five or fewer fundamental datasets on their geoportal. We also classify geoportal and fundamental datasets availability based on four regions Asia-Pacific, Europe, Africa, and America. European countries have the highest percentage of countries with geoportal ownership as well as the highest available fundamental datasets. The finding complements a worldwide study on geoportal availability which has not been re-evaluated in recent years.
Potential Projection of Non-Production Waste and GIS-derived Biomass Waste Potential Mapping Outside PT. XYZ for Boiler Alternative Fuels
Authors: Firmansyah Mokhamad , Wahyuono Ruri Agung , Wicaksono Sigit Tri 
Published: December 2023

Abstract
Non-process waste such as wooden pallets, cardboard, and plastic in the manufacturing and/or processing industries can be used as a source of fuel that provides added value to the company. PT. XYZ is a Japanese manufacturing company that produces foodstuffs. During the production process, PT. XYZ produces non-process waste from internal sources in the form of wood, cardboard, and plastic. So far, this waste has not been used optimally. Therefore, in this study non-process waste will be projected using several time series models (AR, MA, ARMA, and ARIMA) as an illustration for the availability of raw materials to fulfil biomass fuel. In addition to waste in the factory, biomass waste is also mapped in the area around PT. XYZ for the fulfilment of biomass fuel using GIS (Geographic Information System). The time series analysis indicates that ARIMA model (0,1,1) without constants shows the smallest MAPE (14.7%) for wood waste, ARIMA model (1,1,0) without constants shows MAPE (27.39%) for cardboard waste, while plastic waste suits the ARIMA model (0,1,1) without constants yielding MAPE of 20.3%. Further, mapping of biomass waste potential around PT. XYZ, in Mojokerto, is subjected to the teak wood biomass waste (Tectona Grandis L.f) and eucalyptus. The biomass waste from teak wood waste and eucalyptus is potentially 783.1 tons/month and 0.3 tons/month, respectively. The projected results of biomass waste both inside and outside the factory can substitute 16.34% of coal fuel from the total fuel requirement in the boiler, i.e., 5143.7 tons/month.
Study on the process of purification of zinc sulfate solutions from impurities and their rheological properties
Authors: Absattorov Diyorbek , Makhmayorov Jasur , Abdullayev Bakhodir , Qodirov Sherzod , Davlatov Farrukh , Usmanov Ilkham , Samadiy Murodjon 
Published: December 2023

Abstract
The study was conducted to purify the zinc sulfate solution from impurities. A solution of zinc sulfate from a zinc-containing concentrate collected from the ore of the Khandiza deposit was taken for the study. Autoclave leaching of zinc concentrate with 30% sulfuric acid in an autoclave was done by introducing zinc dust after the stage of treatment of zinc concentrate with sulfuric acid. The possibility of reducing the copper content in the liquid phase from 0.26% to 0.01% at a ratio of Me:Zinc dust=1:(1.05-1.10) is presented here. Ammonization of a solution purified from copper makes it possible to reduce the copper content from 0.53% to 0.01% at a ratio of Fe:NH3=1:1.1. Empirical equations are derived for the effect of temperature, Zn:H2SO4 ratio, and process duration on the density and viscosity of pulps during the conversion of zinc concentrate with sulfuric acid.
Opportunities and challenges of recycling and reusing lithium-ion batteries for sustainable mobility
Authors: Harun I , Bahrudin F I , Daud N , Baba Zin N F S , Mat Yunus N F , Mahat M M , Shaffee S N A 
Published: December 2023

Abstract
The growth of lithium-ion battery (LIBs) applications in electric vehicles and consumer electronics are rapidly increasing, further supplemented by the global energy sector’s transition into more sustainable energy production and consumption. This not only boosts resources demand, but also generating huge amounts of spent batteries that must be properly managed. Recycling becomes a necessity, not only to support circular economy, but also to recover rare metals and reduce the hazardous pollution of LIBs components. There are many benefits for LIBs recycling, especially in environmental protection, energy transition, and economic benefits. Yet, a successful venture into LIBs recycling depends on a few factors: the recycling technology, the resources (spent LIBs), the location of the facilities for disposal and recycling, the local and regional regulatory framework, as well as the environmental impact. Therefore, it is necessary to identify and assess the systemic elements that exist within the recovery modes and phases of LIBs in a local context. This will enable a more informed decision to be made for further development of any LIBs recycling project.
Microalgae cultivation in flat panel photobioreactor as a method of carbon capture: A review
Authors: Syafiqa Abdul Nuri Nur Aqila , Mohamad Puad Noor Illi , Azmi Azlin Suhaida , Ahmad Farah , Syed Abdul Rahman Syarifah Nor Faizah 
Published: December 2023

Abstract
Biomass is one of the renewable energy technologies that plays a crucial role in fulfilling our energy needs while helping to mitigate carbon release. Microalgae biomass is a valuable product that can be utilized for a variety of applications which are generally high in proteins, carbohydrates, and lipids. In relation to that, photobioreactor (PBR) is known to be the appropriate system for microalgae to grow efficiently under controlled conditions. Nevertheless, handling this system can be challenging due to its complexity since it operates through different physical and chemical processes. This paper describes a systematic review of the recent literature published on flat panel photobioreactor (FPPBR) systems for microalgae cultivation that served as one of the critical technologies for the sustainable production of microalgae biomass and bio-based products. A total of 115 publications have been identified and analyzed from the literature search focusing on identifying different designs of FPPBR that have been developed and validated experimentally and numerically. Ultimately, this review is able to provide valuable insights into the current state of FPPBR implementation for microalgae cultivation that can aid in sorting out new strategies to support climate change attenuation and the commercialization of microalgae-based products.
Investigating the optical absorption and thermal conductivity of nano-enhanced lauric acid phase change material for energy storage application
Authors: Bhutto Yasir Ali , Pandey A. K. , Saidur R. , Laghari Imtiaz Ali , Buddhi D. , Tyagi V.V. 
Published: December 2023

Abstract
The issue of energy storage can be significantly reduced owing to phase change materials’ (PCMs) tremendous capacity for storing latent heat in a reliable and sustainable method. The limited thermal conductivity, however, prevents PCM from being widely used in a variety of uses. Highly conductive nanoparticles (NPs) are frequently integrated into PCMs to address this shortcoming. Due to their high thermal conductivity, such as Graphene (GR), carbon-based NPs are considered potential NPs to be implemented in PCMs. Herein, we report the Lauric acid (LA) PCM, and nano-enhanced LA with 0.3% and 0.7% additions of GR NPs. The composites were prepared by using two-step method. The samples were examined thermo-physically; thermal conductivity was obtained using a thermal property analyzer (TEMPOs), chemical composition was identified using Fourier transform infrared spectroscopy (FTIR), photo-transmittance by Ultra-Violet Visible spectra (UV-Vis) and thermal stability was assessed by employing thermal gravimetric analyzer (TGA). As per results, thermal conductivity of LA was enhanced by 13.5% and 18.4% by inclusion of 0.3 and 0.7 weight percentages of GR NPs. The 0.7 weight percentage addition of GR NPs to base PCM exhibited 60% transmittance reduction in comparison to base LA. Further all prepared samples were thermally stable with no weight degradation until 140°C. The FTIR confirmed the samples were chemically stable as no any new peak observed in composites. Therefore, based on results, GR enhanced LA PCM can be considered as future potential composite to be implemented in energy storage applications.
Utilization of Calliandra calothyrsus and Gliricidia sepium as co-firing fuel with consideration of ash-related issues
Authors: Putra H P , Kuswa F M , Prabowo  , Hariana  
Published: December 2023

Abstract
Biomass can be utilized as co-firing fuel in existing power plants. Woody biomass such as Calliandra calothyrsus and Gliricidia sepium, which can be planted in degraded land, have short cycle, good survivability, and high energy potency, are potential to be utilized. However, adding biomass to existing power plant fuel may cause ash deposition problems such as slagging, fouling, abrasion, corrosion, and agglomeration. This study investigates the ash-related problems of co-firing C. calothyrsus and G. sepium with different type of coal using theoretical indices. The results show that addition of C. calothyrsus and G. sepium up to 50 wt.% has insignificant effect to the risk of slagging, fouling, abrasion, and agglomeration of co-firing fuel. Since the chlorine content in these biomasses increases the corrosion risk to high, the addition of C. calothyrsus is recommended up to 10 wt.% while G.sepium up to 15 wt.% for co-firing fuel.
Resource recovery from palm kernel shell and its application for wastewater treatment: a circular economy approach
Authors: Tan Yan Ying , Zainal Abidin Mohd Izzudin Izzat , Buthiyappan Archina , Abdul Raman Abdul Aziz 
Published: December 2023

Abstract
In this study, cationic Methylene Blue (MB) dye removal was investigated through a batch adsorption process using a ternary adsorbent developed from palm oil biomass, graphene oxide, and iron oxide (M-PKSGO). Box-Behnken Design (BBD) was applied for modelling and analyzing the effects of independent operational parameters including pH of initial MB dye solution, M-PKSGO dosage and adsorption time on dye removal and adsorption capacity. The experimental results show an adsorption capacity of 82.7 mg/g was achieved using 1 g/L of M-PKSGO with 135 min at pH 11. Hence, the M-PKSGO composite is proven as an effective adsorbent for cationic dye removal from wastewater. The utilization of biomass from the palm oil industries promotes a circular economy via resource recovery activities. Overall, this work brings to light the opportunities created by green adsorbents in promoting a circular economy and stimulates further research and development in this highly pertinent field.
Investigation the influence of inclination angle for flat plate solar air collector through experiment and simulation
Authors: Wong S Y , Gobi K , Lim C H , Ong K S 
Published: December 2023

Abstract
The heat behaviour of a flat plate solar collector (FPSC) has been analyzed experimentally and numerically under natural convection air flow. The thermal energy transferred through the air by heat convection and heat radiation. The data collections for the solar collector includes various of the inclination angles (15°, 30°, 45°, and 60°). The conventional glazed solar collector has a very low efficiency. Hence, the collector is unglazed in this study. It also covered with the insulation on both sides and at the bottom plate to prevent heat loss. The analysis concluded that rising solar radiation causes temperature to rise. Besides that, it is found that the studies conducted simultaneously on the experimental and numerical models on the different inclination angles are still lacking. Hence, the numerical model was simulated through the utilization of Computational Fluid Dynamics (CFD) method. A comparison between the numerical model and experiment has revealed that the simulation results of FPSC are closer to the experiment result with less than 5% error. Thus, the numerical model that incorporates design parameters can be utilized for forecasting the way FPSC will operate properly. The results concluded that the FPSC with a 5 cm height of air gap has the highest heat output when inclined at 15 degrees.
Preliminary theoretical design of crossflow water turbine for rainwater rooftop harvesting system
Authors: Suhaime M A , Mat Tokit E , Sa’at F A Z M , Rosli M A M , Herawan S G , Oktarina R , Setyandito O 
Published: December 2023

Abstract
Harvesting energy is essential especially now that the demand of energy is high but the fuel supply is limited. This study theoretically designs the 5 m low head crossflow turbine in rainwater harvesting system. The characteristics of the site condition, the runner geometry, the blade geometry, and the turbine specification had been identified and the geometrical model of the design is shown. This paper reported the collection of theoretical formula for the design of low head crossflow turbine that can be used for rainwater harvesting system. The dimensional form of equations, as presented in Section 2, resulted to the two, four, and two parameters that represent the dimensions of the turbine, runner and the blade, respectively. As a conclusion, the designed turbine can be used for rainwater harvesting system with an efficiency that was calculated to be 88% with 22 kW expected power generated for 5 m head.
Preliminary study of the dual power source system for 11kV manufacturing substation’s battery charger
Authors: Faizil Anuar Putri Falyana Balqis , Ahmad Nurfadzilah , Pirdaus Nur Alfarina 
Published: December 2023

Abstract
In the future, renewable energy sources will be a more sustainable solution. Solar energy can be used by the factory to charge a substation’s battery charger. The plan is to use solar energy to charge a battery charger in a factory. Solar energy is more efficient than coal, petroleum, and natural gas. This paper demonstrates the design or reconstruction of an existing circuit drawing to achieve the goal of this project. The design incorporates a changeover switch to perform the power supply changeover for solar energy in order to compare the efficiency of the battery charger using solar power energy to the existing loads. The solar simulation will be built and performed by the MATLAB Simulink model for the simulation part. The PV array represents solar energy by stimulating the I-V and P-V for various irradiance (W/m2) and temperatures (oC). This project aims to improve the circuit design in the substation’s battery charger, develop a solar energy harvesting system, and create an efficient prototype of an energy storage automatic transfer switching system. As a result, this project helps to reduce the rate of global electricity consumption, which has an impact on the environment. Commercials’ pollution is significantly reduced by solar energy. We can demonstrate the global benefits and relevance of implementing this concept, particularly in our industry, by preparing this study. Solar energy is a dependable and cost-effective energy source. The sun is a renewable energy source. While fossil fuels will eventually run out, sunlight will not.
Feasibility study on electricity generation in Kg. Sabur Pulau Banggi Malaysia from wind energy using HOMER software
Authors: Kumar Y N S , Makmud M Z H , Hamid A S A , Rahman A B A , Miskon M T , Salleh S 
Published: December 2023

Abstract
The feasibility of electricity generation using wind turbine system in Kg. Sabur, Pulau Banggi, Sabah is studied by investigating the electrical load profile of Kg. Sabur and analyzing the techno-economic aspects. Pulau Banggi is an area that encountering with electricity shortage and the highlighted location from Pulau Banggi that facing this issue is Kg. Sabur. The diesel generator, main electricity supply insufficient to meet the load requirement in Kg. Sabur. Survey data is used to develop the electrical load profile in HOMER software. The meteorological data such as wind speed, solar GHI and temperature are inputted into HOMER as well as components sizing and costs details. Comparison is made between four electrical systems on the aspects of electricity production, economics, fuel consumption and gas emission to evaluate the efficiency of the system with wind turbine. The total electrical load of residential area in Kg. Sabur is 888 kWh/day. Type 1 electrical system that consists of wind turbine, solar PV, battery, generator and converter is the most cost-effective and highly reliable system to be implement in Kg. Sabur. Electrical generation from wind energy is the most feasible system to implement in Kg. Sabur, Pulau Banggi, Kudat.
Development of graphical user interface for boost converter employing visual studio
Authors: Krismadinata  , Aulia Firstia Bevi , Maulana Ricky , Yuhendri Muldi , Azri Maaspaliza , Kanimozhi Kannabiran 
Published: December 2023

Abstract
In power electronics, the boost converter is a typical circuit that raises the voltage from the input to the desired output voltage. For learning how a boost converter works, you need an easy-to-use GUI that lets you change the input voltage, output voltage, and load resistance. In this study, we look at how to use Visual Studio to make a boost converter’s simple user interface (GUI). Details are given about how the software was programmed and how the interface was made, as well as how the graphical user interface was made. This circuit has a total of four devices, two for current and two for voltage. Voltage sensors can measure both the input and output voltage, while current sensors can measure both the input and output current. The Arduino Uno microcontroller is used as a processor for getting data and as a link between sensor devices and personal computers. The results show that the GUI we made works well for analyzing the features of the boost converter circuit.