bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Characterization Of Porang Starch (Amorphophallus Oncophyllus) Biodegradable Plastic Using Sorbitol Plasticizer With The Glycerol Plasticizer Addition
Authors: Maghfirah A , Susilawati  , Sofyan M Z , Siambaton M W , Sitepu S N K B , Putra O P 
Published: December 2023

Abstract
This research investigated effect of morphological, mechanical and physical properties on biodegradable plastic made from porang starch with chitosan using, sorbitol plasticizer at concentration 60 and 80 wt%, with the addition of glycerol plasticizer at various concentrations (0%, 25%, 50%, 75%, 100%), made using the melt intercalation method with a gelatinization temperature of 80°C and drying temperature of 70°C. Plasticizer was added to improve flexibility and water absorption of biodegradable plastic properties. Increasing the concentration of the plasticizer resulted in an increase in the elongation of the biodegradable plastic. The biodegradable plastic showed greater tensile strength before addition glycerol plasticizer 1,9191 MPa at 60% concentration and 1,3018 MPa at 80%. Conversely, the addition of 100% glycerol concentration showed an increase in elongation of 77.7764% at 60% sorbitol and 171.0562 at 80% sorbitol. SEM characterization results still showed agglomeration and FTIR not showed any new functional groups. The results of this research indicate that the percentage and kind of plasticizer influence the physical, mechanical, morphological and degradation properties to porang starch biodegradable plastics.
Differential Thermal Analysis of Polyvinyl Alcohol Nanocomposite with Rice Husk Ash as a Filler
Authors: Sirait Makmur , Sinulingga Karya , Siregar Nurdin , Doloksaribu Maryati 
Published: December 2023

Abstract
Nanoparticles of polyvinyl alcohol with rice husk ash as a filler for strong polymer material candidates have been prepared through the sol-gel method. Rice husk ash is a waste product obtained from the combustion of rice husks at a controlled temperature and possesses high pozzolanic properties due to its silica content. Ball milling and co-precipitation methods were employed on the rice husk ash to create nanoparticle materials. To produce nanocomposite membranes, a polyvinyl alcohol solution was utilized as a solvent through the sol-gel method. The nanocomposite samples of rice husk ash were analyzed thermally to determine the material’s response to temperature. Various nanocomposite compositions of polyvinyl alcohol and rice husk ash were used, including 0%, 1%, 2%, 3%, and 4%. Based on the thermal analysis, it is evident that there were changes in enthalpy (H) and mass characteristics in all five samples.
Calculation of Seebeck coefficient and thermal electric conductivity in single-layer NiI2 with LDA+U method
Authors: Prayitno T B , Budi E , Riyanto F A , Jaelani A 
Published: December 2023

Abstract
The LDA+U approach has been employed to examine the effect of the Seebeck coefficient and thermal electric conductivity in single-layer NiI2. The combination of self-consistent calculation and semi-classical Boltzmann transport has been performed to the role of magnetism in the critical temperature and room temperature. Significant tendencies were observed for some Coulomb repulsion values for different temperatures. This indicates that magnetism has a noteworthy influence on the Seebeck coefficient and thermal electric conductivity.
Increasing quantum efficiency of erbium optical medium doped lithium fluorophosphate (EDLF) as a candidate of glass-based optical amplifier
Authors: Hutahaean Juniar , Motlan  , Panggabean Jonny Haratua , Rajagukguk Juniastel , Rajagukguk Donna Helen , Sarumaha Chayani , Kaewkhao Jakrapong 
Published: December 2023

Abstract
Glass with composition (69-x)P2O5-20Li2O-10AlF3-xNaF-xKF-1Er2O3 (% mol) with (x = 0 ;10) was tested using melt-quenching technique. Some of the characterization carried out are identify physical properties, optical properties, luminescence, and radiation properties. Characterization using UV-vis-NIR to obtain absorption spectra in the region 380 – 1700 nm. NIR luminescence spectroscopy is used to produce a near infrared spectrum in the NIR region 1400 nm – 1700 nm. Based on the results of their radiation properties, the three glasses in this study have the potential as optical amplifier.
Monitoring and control of IoT-based building electrical load limit
Authors: Karismawati D P , Ghaniy M A , Kamilah R , Suhendi A , Saputra C 
Published: December 2023

Abstract
The Demand for electrical energy continues to increase. However, excessive electrical energy consumption can lead to tripped circuits and escalated costs. We developed a prioritised sockets system to avoid electrical trips and excessive power consumption. The PZEM-004T sensor in the master circuit can measure electrical power with deficient error, and the ACS712 sensor in the slave circuit can measure electrical current with an accuracy of 99.85%, making these sensors suitable for monitoring. Additionally, the non-priority sockets can interrupt the power flow when the power exceeds the limit while the priority socket remains active. The mobile application can display real-time historical data and control the switching of prioritised sockets. This system consists of 3 subsystems: the master circuit, the slave circuit, and the mobile application. The priority socket’s current cannot be interrupted. In contrast, the non-priority system can be interrupted when the electrical power load reaches 375 Watts. The mobile application controls the switching of prioritised sockets and monitors the incoming electrical power loads. They connected this system to the internet for proper functioning.
Integration of data acquisition system for rainfall measurement on IoT-based tipping bucket rain gauge
Authors: Danendra D P , Oktafandi K A , Mujiyanti S F , Lasminto U 
Published: December 2023

Abstract
Rainfall is an important parameter in determining weather conditions. Rainfall data can be used for various purposes, such as for consideration in planning a civil building. If rainfall cannot be measured properly, it will result in an inaccurate design. In actual conditions, rain gauges are usually placed in locations far from power sources. However, to obtain data in digital form, a power source is required. In obtaining digital data, electronic components and monitoring systems are needed which require a power source and an internet connection to send measurement data to the website. The rainfall gauge used in this study is of the tipping bucket type. In the rain gauge used, there is a magnetic switch that functions to calculate the tip that occurs when it rains so that the rainfall value is obtained. The rainfall gauge used in this study has an accuracy of 97.85%. This tool is equipped with an IoT-based monitoring system, namely using a website. Based on the results of the tests that have been carried out, and the range of rainfall per 5 minutes that can be measured is 0 mm-74,5 mm, the range of rainfall per 1 hour that can be measured is 0 mm-894 mm, and the range of rainfall per 1 day that can be measured is 0 mm-21456 mm. In receiving data from the rainfall gauge used in this study, the Arduino Mega microcontroller and the GSM 808 module were used to send data reading the rainfall gauge to the website. On the website display, you can see the rainfall that is happening, and you can see a graph of rainfall. There is a report menu that can be used to download rainfall data per 5 minutes, per 1 hour, and per 1 day with the date selection feature of the rainfall data you want to download. Downloaded rainfall data is in the form of an Excel file.
The Effect of Adsorbent-Material Properties on PSA Based Oxygen Concentrators
Authors: Hida S N , Putra A N , Nurjaya M Y , Sunaryo M B R , Suhendi A 
Published: December 2023

Abstract
An oxygen concentrator is a technology for producing pure oxygen. By using the Pressure Swing Adsorption method, zeolite as an oxygen concentrator will absorb nitrogen in the free air and release oxygen as an output from the oxygen concentrator. This final project aims to determine the effect of the size, mass, and type of zeolite used in oxygen concentrators on the purity of the oxygen produced. Zeolite will be stored in a closed tube in this study. Experiments will be carried out with the resulting oxygen concentration parameters. The zeolite used is 13X, and Li-X. This research was conducted with mass variations of 200gr, 400gr, 600gr, and 800gr with sizes of 0.4mm and 1.7mm. The results obtained can show a comparison graph of the zeolite to the resulting oxygen concentration. The test results from the mass variation obtained that the mass variation of 800gr had higher purity in all types and sizes of zeolite. Zeolite Li-X has the highest purity value compared to 13X and the size of 0.4mm has a higher purity value compared to the size of 1.7mm.
Reproductive biology of red-tailed goby (Sicyopterus lagocephalus, Pallas 1770) as migratory fish in Cibareno River, Sukabumi, West Java
Authors: Ambarwati A , Effendi H , Zairion  , Wibowo A , Kurniawan  , Prakoso V A , Iswantari A , Irawan D , Jaya Y Y P , Rosadi I , Sudarsono  
Published: December 2023

Abstract
The red-tailed goby (Sicyopterus lagocephalus) is an Indonesian endemic fish that can be found in the Cibareno River. The red-tailed goby is an amphibious fish. The dam construction plan in Cibareno River is expected to affect the reproduction pattern and survival of red-tailed goby. This study aims to analyse the reproductive biology of long-tailed gobies (Sicyopterus lagocephalus, Pallas 1770). The study was conducted over four months (May, June, July and September 2022) in Cibareno River, Sukabumi, West Java using purposive sampling method. A total of 163 fish samples were caught during the study, consisting of 106 males and 57 females. The total length range of fish caught was 32 mm to 150 mm. The sex ratio of male and female fish was 1:0.54 (unbalanced). Fish condition factor ranged from 1–1.6. The month of May and the downstream part of the river are thought to be the peak of S. lagocephalus spawning characterized by the highest gonadsomatix index in that month and location. The spawning pattern of S. lagocephalus is total spawner. The construction of the dam had an impact on the spawning migration of S. lagocephalus to the downstream of the river being blocked. In addition, S. lagocephalus in the downstream of the river are also prevented from migrating upstream to forage.
Spatio-temporal dynamics of mangrove extent in coastal Bekasi Regency, Indonesia
Authors: Amalo L F , Setiawan Y , Kusmana C 
Published: December 2023

Abstract
One of West Java’s largest mangroves is found alongside the shore of Bekasi Regency. Nevertheless, the primary issues are the high degree of waste contamination, extraction of mangrove products, and conversion of mangrove forests into aquaculture ponds. To determine the present state of mangroves on the coast of Bekasi Regency, research on the dynamics of the mangrove extent spatio-temporally must be conducted. Mangrove mapping has made extensive use of machine learning and satellite images. This study aims to calculate the mangrove area in the villages of Pantaibahagia and Pantaibakti along the coast of Bekasi Regency using Random Forest (RF) classification based on the Google Earth Engine (GEE) Platform. The RF classification results showed a significant loss in mangrove extent over a short period of time (seven years). In 2017, the tidal zone was primarily covered by mangroves. From the linear trend line, it is known that from to 2017-2023, the mangrove area tended to decrease, while in 2023, there was a decrease in the mangrove area, especially in the north coast area. In 2017, the total mangrove area was 305.03 ha. Until 2019, there has been a slight increment, reaching 366.41 ha of mangrove are. The most significant loss was found in 2020, in which the total loss reached 85.58 ha in one year. After 2020, the mangrove area has slightly improved, but it is not significant. We tested the produced map of the RF classification using a confusion matrix and kappa coefficient, which resulted in an Overall Accuracy (OA) of 90.50% and a Kappa coefficient of 0.8105.
Mangrove plants as traditional medicine by local coastal communities in Indonesia
Authors: Herningtyas Wieke , Rahmila Yulizar Ihrami , Pujiono Eko 
Published: December 2023

AbstractMangrove plants play an important role in the lives of local coastal communities in Indonesia, one of which is an ingredient for traditional medicine. Local coastal communities have a variety of local knowledge utilizing mangrove plants to treat various types of diseases. Many studies related to the utilization of mangrove plants for traditional medicine have been carried out, but are specific to certain locations. This literature review aimed to determine the variety of mangrove species that have been used by local coastal communities in Indonesia through information from previous research articles. This study used a literature study method with a systematic literature review (SLR) research design. The literature search used the Open Knowledge Maps database with several keywords used to assess the articles included in the research. The result showed that there are 17 families of mangrove plants that contain species with medicinal properties. The mangrove family that is most widely used for medicinal plants is Rhizophoraceae. A total of 36 mangrove species that have been used by local coastal communities to treat various diseases were reported in 12 articles.
Level of effectiveness of pond wastewater treatment installations with remediation bacteria in Cipatujah
Authors: Kamilatunnisa A , Pratiwi N T M , Hariyadi S 
Published: December 2023

Abstract
The coastal area in the Cipatujah District has the potential for intensive pond development. However, the development of intensive ponds in the Cipatujah District still needs to be higher. One of the reasons is farmers’ lack of knowledge regarding the system and benefits of intensive ponds, so many ponds still use simple wastewater treatment plants. The impact is a decrease in the quality of the environment around the pond. This study aimed to analyze the effect of bacteria providing remediation on pond effluent on the quality of wastewater and the effectiveness of pond wastewater treatment plants. This research was conducted in three ponds at Cipatujah District, Tasikmalaya Regency, from October 2022 to January 2023. Wastewater samples were taken after harvesting, while siphon water samples were taken every two days since DOC 30. Water samples were analyzed at the Testing Services Laboratory and Certification of IPB, Bogor. Research results show that TSS, BOD, and NH3 content in pond waste decreased by 40 to 70% when the wastewater was treated with remediation bacteria in the form of Aquapro IPB-Microbac+ and when it was retained for five days. The reduction in the organic matter content of pond effluents has increased the quality of the environment around the ponds by 70 to 80%. The conclusion shows that the pond wastewater treatment plant is effective in treating wastewater as the organic waste content of the ponds discharged into the coastal environment decreases.
CitarumView: A Google Earth Engine–based application for Citarum River monitoring
Authors: Rafli Muhammad Faizal , Nugraha Andhika , Shaliza Ambrosiana Zirly , Zainuddin Satria Zidane , Safiqurrohman Fazrin Andris , Kirana Kartika Hajar , Dharmawan Irwan Ary 
Published: December 2023

Abstract
The Citarum River is a vital waterway in West Java, Indonesia, that sustains life along its sub-watershed. However, the river is facing significant environmental challenges, such as deforestation, and land-use changes, which have led to a decline in its ecosystem quality. To address this issue, the study aimed to develop an application called “CitarumView” that uses remote sensing methods to assess changes in index values focused on the condition of vegetation, built-up, soil moisture, water body, and surface temperature and obtain a description of the Citarum watershed condition in 2019 and 2020. The Google Earth Engine was used to collect and process satellite imagery data, including visual bands B4 (red), B3 (green), B2 (blue), Near-infrared (NIR), thermal infrared (B10 Landsat-8), and short-wave infrared (SWIR), from Sentinel-2 and Landsat-8 satellites. The CitarumView application provides a tool for decision-makers, researchers, and the general public to continuously monitor the river’s condition. The application also provides information on the changes in the ecosystem quality over time, allowing for more informed decisions to be made concerning river management. The analysis conducted using CitarumView revealed that the average of vegetation index increased by 6% with low to mid vegetation level, the max of water index increased by 4.5%, the average of moisture index increased by 39% with mid canopy water, the average of built-up index decreased by 28%, the average of soil adjusted vegetation index increased by 12% with mid to high vegetation, and the average of surface temperature decreased by 5% for 2019-2020.
The effect of compound channel shape for local scouring and flow dynamics using NaysCUBE-3D RANS at Downstream Tukad Unda River Bali Province
Authors: Widyayanti Herna , Nugroho Eka Oktariyanto , Zulhaq Alif Syahrul , Zahroni Aulia , Nugroho Joko , Harlan Dhemi , Prasetyo Adi , Soekarno Indratmo , Samosir David Mickaelson , Roesbianto Azman Syah Barran , Widyaningtias  
Published: December 2023

Abstract
The prediction of sediment transport and flow dynamics are important issues in channel design as the local scouring has an important effect on the shape of the channel, especially on the compound channel. Tukad Unda River in Bali has river section in the form of compound channel. It consists of two sections with different dimension, the main channel and the flood plain. These dimensional differences cause two different flows. Transformation of flow velocity and turbulence cause movement of sediment transport, generates a complex 3D flow structure in the boundary of main channel and floodplain. This study uses morphology data in Tukad Unda River and simulated by using NaysCUBE. NaysCUBE is a three-dimensional numerical modeling which use the Reynold Average Navier Stoke equation (3D RANS model). The result in this study shows the different pattern of flow dynamics and local scouring in the boundary between main channel and floodplain as the concrete block located in that boundary compare to the nature compound channel. In the 40-minute simulation, the nature compound channel represented significant deformation of the river bed in the interface area, with a decrease in elevation of 0.01 meters higher than the compound channel with concrete blocks. while the increase in elevation in the main channel is around 0.09 meters lower than the compound channel with concrete blocks. Application of concrete blocks can be useful to reduce local scour at the interface as the impact of compound channel flow characteristics.
Mapping the position and attitudes of stakeholders towards the utilization of the black soldier fly using MACTOR Tools: A study in Depok City, West Java, Indonesia
Authors: Zulkifli S , Jayanegara A , Noorachmat B P , Fahmi M R 
Published: December 2023

Abstract
Depok City is located between the cities of Jakarta and Bogor. The population of the city has reached more than 2,000,000 people. This has consequences on the issue of waste, especially food waste. Food waste responsible for 8–10% of global anthropogenic greenhouse gas emissions. To support sustainable development, it is very important to reduce the amount of food loss. In 2019, food waste reached 931 million tons of food worldwide. Retailers and households are the biggest contributors to this waste at 13% and 61% respectively. This food waste exacerbates economic, environmental and social problems. The black soldier fly (BSF) insect (Hermetia illucens) can overcome the negative impact on the environment caused by food waste and at the same time can provide a sustainable source of protein. BSF larvae can digest food waste and convert it into biomass. However, the application of the use of the black soldier is not yet widely known in the City of Depok. For that, we need a comprehensive approach that involves various stakeholders. One of the most important elements in the successful application of the black soldier fly to the waste problems in Depok City is stakeholders mapping.
The fragile springs, unnoticed: lessons from water policy in dry islands of Flores Indonesia
Authors: Steni Bernadinus , Kartodihardjo Hariadi , Adiwibowo Soeryo , Deni Djakapermana Ruchyat 
Published: December 2023

Abstract
The Indonesian government has maintained the SDGs’ priorities by establishing targets and projects. This paper examines the way how programs and targets are designed and implemented by considering the reality of community-based water management (CBWM) on the ground. Using Critical Institutional Analysis Framework (CIAD), this study analyzes the actual CBWM particularly by taking in depth interviews with the representation of community members in 6 villages of dry-land area in the northern part of Manggarai District, East Nusa Tenggara Province. The study also undertakes the spatial analysis of the springs area. The analysis on site will be complemented by a portrait of bigger context in the political economy analysis of district and country. The finding indicates that although most land use and water policies have some formulation to protect water sources, including springs, the CBWM are detached from policy agenda. Without direct support to CBWM, the water policy is weak to challenge land use changes including the mining policies from the past and the current trend for commodity expansion. The study suggests that the water policies have to deal with mining policies if the jurisdiction is willing to indicate the water priority of the area. Moreover, the protection for the springs should not be relying on community-based institutions alone. The policies have to be there to enable the water institutions to anticipate the pressures on the springs.
Bibliometric mapping of research developments on the topic of fishing port management using VOSviewer
Authors: Megawati A P , Wayan Nurjaya I , Machfud  , Suseno Sugeng H 
Published: December 2023

Abstract
The study aims to determine position of the research to be analysed regarding the management of fishing ports with the stakeholder analysis approach that plays a role in management. Ports are one of the industries that have social consequences for stakeholders, necessitating a greater awareness of their social responsibilities. However, the literature has not yet assigned equal weight to the social components of ports because they have economic and environmental dimensions. Fishing ports can produce waste as a source of pollution. Thus, stakeholders must play an important role in managing fishing ports. The results showed a network of visualizations, overlay of visualizations, and density of visualizations. Research on the management of fishing ports with an evaluation approach to the role of stakeholders has not been widely conducted; thus, further research can be conducted.