bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characteristics of corn starch-based edible coating enriched with curry leaf extract on quality of the strawberry (Fragaria x ananassa Duch.)
Authors: Nur B M , Zaidiyah Z , Luthfi F 
Published: December 2021

Abstract
Strawberry is one of the most popular tropical fruits in Indonesia. The fruit has a concise shelf life and quickly deterioration after harvesting due to mechanical injury, physiological disorders, water loss, fungal growth, and high respiration rates. Postharvest technology is one technique that can maintain fruit quality and extend shelf life, one of which is a coating technique called edible coating. The edible coating layer of corn starch with the addition of curry leaf extract has antibacterial activity that can inhibit the growth rate of microorganisms. This study aimed to determine the characteristics of the edible coating solution produced from corn starch with the addition of curry leaf extract to produce the best edible coating layer. This study used a factorial completely randomized design experimental method, which consisted of treatment with curry leaf extract concentration (8%, 10%, and 12%) and dipping time (4, 5, and 6 minutes) with three repetitions. The result showed a significant delay in weight loss and total dissolved solids in strawberries compared to the uncoated control strawberries. In addition, the edible coatings had positive results in organoleptic based on panelists’ acceptance of color, aroma, taste, texture, and overall. These findings suggest that using 8% curry leaf extract with 4 minutes dipping time could be favorable to extend the shelf-life and maintain the quality of strawberry fruit.
Growth and yield response of a local pepper (Capsicum annuum L.) accession to begomoviral caused disease in the medium elevation land
Authors: Alfan G , Zakaria S , Kesumawati E 
Published: December 2021

AbstractThe experiment aimed to evaluate resistance of a local pepper accession to begomovirus caused disease which is annually observed in pepper cultivation in Aceh, Indonesia. The evaluation was conducted by assessing the growth and yield response of the pepper plants in the median elevation. The field experimental was conducted in Agricultural Staff Training Center (BLPP) Saree and Horticultural Laboratory of Syiah Kuala University from December 2018 to August 2019. Purpose sampling method was established to for plant selection devided into two clusters. The first cluster of 930 plants was evaluated for typical symptom of begomovirus caused disease from 15 to 135 days post transplanting (dpt). Second clusters plants were selected and divided into two group of early-symptomatic and late-symptomatic plants consisted of 12 plants, respectively for polymerase chain reaction (PCR) based begomovirus diagnosis and yield survey. Typical begomovirus symptom started to be observed at 30 dpt in small number of plants (3%) and reach the highest rate (100%) at 105 dpt. The difference productivity of early-symptomatic plants was 0,26 tons ha−1higher than late-symptomatic plants. Begomovirus species which prevalently infect the plants both early and late symptomatic plants was pepper yellow leaf curl Indonesia virus (PepYLCIV).
Collaborative approach for coastal and marine spatial planning in Bangka Belitung Island Province
Authors: Murtasidin B , Sujadmi S 
Published: December 2021

Abstract
Amendments to Law no. 27 of 2007 became Law no. 1 of 2014 concerning the Management of Coastal Areas and Small Islands has an impact on the coastal and marine spatial planning process in every region, including Bangka Belitung. This planning process requires stakeholder collaboration to carry out broader cross-sectoral coordination. Apart from being composed of more than 80% of the water area, the struggle for access and conflicts over the use of marine space also take place in a vertical and horizontal level. The dilemma of authority between levels of government and law enforcement authorities, as well as between local governments, communities, and state corporations, is a form of hierarchical conflict. Conflicts between governments at the street bureaucracy (Village) level and their citizens, or friction between pro and contra groups against marine mining are examples of horizontal conflicts. The complexity of this problem has demanded the government to be presented in a more powerful and most decisive position in the management of the coastal and marine areas of Bangka Belitung so that it does not drag on. Therefore, the government needs to formulate comprehensive resource optimization options in the coastal and marine zones. This study aims to map how a collaborative approach in coastal and marine spatial planning through Regional Regulation (Perda) Number 3 of 2020 concerning the Zoning Plan for Coastal Areas and Small Islands of the Bangka Belitung Islands Province. At least 3 dominant actors are involved and collaborate, namely the government, fishermen, and investors.
Potential And Characteristics Of Eichhornia Crassipes Biomass And Municipal Solid Waste As Raw Materials For RDF In Co-Firing Coal Power Plants
Authors: R Darmawan S A C , Sihombing A L , Cendrawati D G 
Published: December 2021

Abstract
The government has regulated the use of RDF biomass for coal co-firing in power plants. This paper examines biomass (Eichhornia Crassipes and municipal solid waste) characteristics and its potential use as RDF for co-firing in CPP. The method includes the analysis of the composition, supply of raw materials, and biomass characteristics. These results will compare with the coal’s characteristics in CPP. The density of Eichhornia Crassipes in Lake Tondano was 25 kg/m2, with the wet mass of 45,350 tons. The results of the Eichhornia Crassipes sample test for parameters of moisture content, volatile matter, ash content, fix carbon and gross calorific value have a value range of 93%, 5.8-7.1%, 60.21-63.5%, 17.9-22%, 11.4% and 2681-3068 kcal/kg. Amurang CPP uses coal with 4200 kcal/kg calories as much as 1056 tons/day. The co-firing target of 5% requires 52.8 tons of biomass per day. The existing Eichhornia Crassipes biomass in Lake Tondano only supplies the CPP for 62 days. MSW typically has calorific values and moisture with Eichhornia Crassipes biomass, about 3766-4194 kcal/kg and 31.7-87.1%. The use of MSW to cover the lack of Eichhornia Crassipes will ensure the sustainability of the supply of biomass raw materials in the co-firing program at CPP.
Experimental investigation of Archimedes Screw Hydro Turbine rotation with and without deflector
Authors: Setiawan Y , Wijianti E S , Wibowo B S , Saparin S , Prayitnoadi P 
Published: December 2021

Abstract
The Archimedes screw water turbine (AST) is a device that works mechanically to produce electrical energy with an energy source that comes from the flow of water. Archimedes screw hydro turbines operate at low head and flow rates and can generate electricity at micro levels. This type of turbine is very suitable for use in small waters such as irrigation and rivers. The research was conducted by building a prototype of a small-scale Archimedes screw hydro turbine with and without deflector. The purpose of this research is to compare the rotation produced by the two turbines and whether the installation of a deflector can improve turbine performance. The turbine is constructed with a screw length of 1 m, outer diameter is 30 cm, the number of blades 15, and each has a pitch distance is 13 cm. Turbine angle variations are 30°, 35°, and 40°. The results showed that the best rotor rotation was produced by the screw without deflector at an angle of 30°. This shows that the addition of a deflector reduces the resulting screw rotation.
Cointegration Test and Projection of Total Rubber and Tin Production and Their Effect on The Environment in Province of Bangka Belitung Island
Authors: Dalimunthe D Y , Aldila H 
Published: December 2021

Abstract
The cointegration test in this study aims to see the long-term balance relationship between the amount of rubber and tin production produced in the Province of Bangka Belitung Islands. This time series test uses historical data from 2002-2015. In addition to seeing the cointegration relationship, it will also be seen how the projection results are produced until 2025. This cointegration test results that the amount of rubber and tin production produced in the Province of Bangka Belitung Islands does not have a significant relationship between the two variables as evidenced by a probability value of 0.1366. The probability value that is greater than 5% of the alpha level means that these two variables are independent of each other and the projection results show that tin and rubber production has an upward trend from 2016-2025. The projected value of tin production is not as high as the projection value of rubber plantations with a percentage difference of 11.67%. It is also time for the community to develop the plantation sector and move away from the mining sector which has been undertaken in line with the increasing environmental damage that has been generated.
Thingsboard-based prototype design for measuring depth and pH of kulong waters
Authors: Ilyas T F , Arkan F , Kurniawan R , Budianto T H , Putra G B 
Published: December 2021

Abstract
Kulong is a post-tin mining area that is not reclaimed, resulting in the formation of a basin that is gradually filled with water through natural processes. In carrying out an inventory of kulong water to find out the potential and benefits of its water, a method is needed to measure the depth and pH value of kulong water in a practical way and can be monitored in real-time. Depth measurement usually uses an echosounder and to check the pH value using a manual pH meter. However, this method is somewhat less effective because it requires a relatively long process and the resulting data must be recorded manually. In this study, a thingsboard-based prototype design was designed to measure the depth and pH of the Kulong waters. measurement data is processed using a hotspot or WIFI internet connection. The measured value data will be processed and uploaded to the Thingsboard server, which is an online-based Internet of Things (IoT) platform. So that data can be displayed in real-time through the website and can be accessed via a laptop or smartphone.
Study of power flow in electricity system using extreme learning machine
Authors: Darwis M , Gunadin I C , Said S M 
Published: December 2021

Abstract
Load Flow or Power Flow Analysis in the power system in used to determine the power system parameters such as voltage, current, active power, and reactive power contained in the power grid. The method that has long been used in the calculation of load flow or power flow is the Newton-Raphson iteration method. As for its development, to complete the power flow study, it is carried out by implementing the Artificial Intelligence method, one of which is the Extreme Learning Machine method. This method is used in the simulation of the simple 39 Bus system calculation from IEEE. In this Extreme Learning Machine, the testing analysis is carried out with 2 inputs, 1 hidden layer, 5 neurons, and 2 outputs and the number of datasets is 39 to produce MAE and MAPE respectively 2.02 and 0.76% and with a very fast processing time of 0.010s
Real-time voltage stability monitoring model of wind power plant penetration in electrical power system networks
Authors: Ilyas A M , Suyuti A , Gunadin I C , Said S M 
Published: December 2021

Abstract
The intermittent output power of wind power plants can affect the stability of the power grid, so a real-time monitoring model is needed. This study uses data from the southern Sulawesi network which is interconnected with wind power plants in real-time, and the IEEE 30 bus data is used as method validation. The method used is the New Voltage Stability Index (NVSI) based on Matlab. The results of the stability index on the IEEE 30 bus data are < 1 or are at the standard of stable criteria, namely 0.95 p.u. The result of the stability index of the South Sulawesi network is line number 49 from Latuppa to Poso has the highest value of 0.0473, the second is line number 18 from Bosowa to Tello is 0.0390, and the third is line number 24 from Tello 30kV to Barawaja is 0.0221, the other bus voltages have lower values. So it can be concluded that the network of South Sulawesi is stable, and intermittent wind power has no effect on voltage stability.
Design a bee calling tool using a caller voice and honey scent based on arduino and the blynk application
Authors: Thoib A , Kurniawan R , Budianto T H 
Published: December 2021

Abstract
Bees have the characteristics of always moving and will settle in one place because of the source of nectar. Bees use smells (pheromones) as a means of communication. In addition, bees also communicate through body movements called dances waggle and have a frequency range of 200 Hz - 300 Hz. Communication on bees serves to contain information about what will be done by a bee colony. Therefore the authors assume that honey bees can be called. So it is necessary to design a tool that can summon honey bees using the caller’s voice and the aroma of honey. The tool is controlled using Bluino and the Blynk app. The test was carried out using the caller’s voice in the frequency range of 265.9 Hz – 297.2 Hz which was obtained from the sound recording process in the bee colony Apis cerana, so the focus of this research was the process of calling bees Apis cerana. The aroma used is the aroma of resisting honey, the aroma of sugar water, and the aroma of bee attractants. From the results of testing using three kinds of scents for 7 days, the number of bees is called as follows. The aroma of honey against 837 tails, the aroma of sugar water 758 tails, and the aroma of attractant bees 118 tails. Based on the results of the study, the bee-calling device using the aroma of resisting honey was more dominant to use.
Optimization of the Belinyu solar power plant to reduce emissions of waste gas in diesel power plant
Authors: Siregar E M 
Published: December 2021

Abstract
The operation of a diesel power plant not only improves reliability but also has an impact on the environment in the Belinyu sub-district. The purpose of this PLTD development is to meet the increasing electricity demand. Environmental aspects in the construction of this PLTD include exhaust gas emission factors which are pivotal to notice. Meanwhile, this low emission power plant located next to the diesel power plant has not yet had an optimal operating pattern because there is no energy storage system. By optimizing the design of the solar power plant and optimization the operating pattern of the diesel power plant, it has the potential to reduce the operating hours of the diesel power plant engine as well as the potential to reduce exhaust gas emissions in the amount of 0.0060264 mn tons CO2/year.
Risk Reduction of Marine Oil Spill using Clusters of Fruit Peel Pellets
Authors: Saha G , Majumdar D 
Published: December 2021

Abstract
Globalization has led to massive rise in cross border trade. Increase in E-commerce business has contributed to this too. As a result, a continuous and complex logistics network of supply chains operate across the globe round the clock. Transportation of goods is the most essential activity of this network. Statistics reveals that approximately 90 percent of world’s goods are transported via sea route. This intense network of shipment poses a huge threat to marine ecosystem in numerous ways. One of the most dangerous events for marine ecosystem is oil spill. Oil spill from vessels and pipelines are a major reason behind mortality of marine wildlife. The present work focuses on developing a cost-effective sustainable solution for mitigation of marine oil spill. It was found from existing literature that peels of some fruits have substantial oil absorbing capacity. This fact was experimentally validated and a reduced scale prototype was designed aiming for the task of deployment in case of oil spill in marine waters. The experimental results show that the proposed model floats on water after absorbing oil up to its saturation value. It was also found that through appropriate mechanical setup, absorbed oil can be extracted for reuse or processing.
2D electrical resistivity imaging to determine depth of andesite spreading at Tanjung Batu, Jambi as eco-friendly exploration of minerals method
Authors: Kusmita T , Iwalzi  
Published: December 2021

AbstractTanjung Batu has potential subsurface minerals in the form of Andesite rocks. Andesite can be used appropriately for infrastructure with excellent physical features, including hardness, compressive strength, density, as well as the water and weather resistance level. Andesite is one type of igneous rock that is widely used in the construction sector, especially infrastructure such as roads, bridges, housing, airports, and seaports. In mining, the depth of mineral exploration usually using borehole method. In this study used electrical resistivity method with dipole-dipole configurations. Electrical resistivity is also capable for identifying Andesite rocks in subsurface without drilling the area because each rock has a different rock resistivity value. In this study used 240 meters of track and 20 meters space of electrodes. Based on 2D Imaging, range of Andesite resistivity in this area was 170 - >1095 Ωm. Andesite depth was at 3.42, 10.6, 18.5 and - 27.2 m.
Analysis of the use bioethanol-pertalite mixtures in motorcycles on fuel consumption efficiency
Authors: Wibowo B S , Sari F I P , Setiawan Y , Prayitnoadi P , Adha M D 
Published: December 2021

Abstract
Indonesia is one of the countries in the world that depend on fossil fuels. Fossil fuels are non-renewable fuels. The increasing use of fossil fuels causes fossil fuel reserves to dwindle, there is a need for alternative fuels. the use of alternative fuels is the right solution, alternative fuels that have been developed include bioethanol. The research method used in this study used pure pertalite data as a comparison, then continued with a mixture of bioethanol and pertalite with a variety of bioethanol and pertalite mixtures used were 10ml bioethanol 90ml pertalite, 20ml bioethanol 80ml pertalite, and 30ml bioethanol 70ml pertalite. variations of engine speed used 1000, 2000, and 3000 RPM. Then the fuel consumption data analysis was carried out on the engine. The results of the research conducted will get results for RPM 1000 with 10 ml bioethanol content, there will be less fuel consumption than pure pertalite as well as 20 ml. In the 3000 RPM Round with 10 ml bioethanol content, the fuel consumption is more efficient than pure pertalite, the same thing with bioethanol with 20 ml levels, the fuel consumption is less than pertalite.
Liquid smoke application in latex as an environment-friendly natural coagulant
Authors: Evahelda  , Astuti R F , Aini S N , Nurhadini  
Published: December 2021

Abstract
Liquid smoke has many benefits, especially in the food, fishery, timber, and plantation industries. It is used as a preservative or durability increased and aroma and taste addition in the food and fishery industry. In the wood industry, liquid smoke can resist termite attacks, while in the plantation industry, it functions as a latex coagulant containing antifungal, antibacterial, and antioxidants that can improve rubber product’s quality. Most of the rubber farmers in Bangka Belitung still use alum as a coagulant to coagulate their latex. However, alum coagulant can reduce the quality of the processed rubber material (bokar). The reason farmers use alum is that raw materials are cheap, therefore getting coagulant raw materials at low prices and not pollute the environment with a less moderate aroma/odor caused by non-recommended coagulant materials (alum) are needed. This study aims to apply liquid smoke as a natural coagulant in latex freezing. The research method used a Completely Randomized Design, with liquid smoke concentration replicated three times. Parameters observed were clotting time speed and organoleptic test for odor during 14 days of storage. The results showed that the best concentration of liquid smoke was 15% no odor and a clotting time of 8.23 minutes.
Visualisation of Naturally Ventilated House in Tropical Hilly Area of Indonesia, Case Study: Vatutela Village, Tondo Hills, Palu
Authors: Fitriaty P , Bassaleng A J R , Burhany N R , Mardin R , Setiawan A , Alam S 
Published: December 2021

Abstract
The settlement of Vatutela village’s in Tondo hills Palu has only one road access with a linear residential pattern following the topography. This situation affects the pattern of wind flowing through the settlement areas, which is undoubtedly affecting the house’s temperature and humidity profile and influencing thermal comfort of the occupants. The research was conducted to visualise the pattern of the wind flow entering the house through openings in the perspective of building’s thermal performance. The method used to visualise the air movement was the smoke decay method. The method was performed in two scaled dwelling Models representing brick-constructed houses and wood-constructed raised floor houses in Vatutela village. The smoke decay result is elaborated with the results of microclimate measurements using Hobo data loggers to analyse the thermal condition in the houses. The results showed that a design strategy is needed to achieve a thermal comfort zone in both types of houses. The design strategy can be in the form of the arrangement of openings and additional building elements, such as adding ceilings, fins, sunscreens. Additionally, the opening placement, width, and type should be reconsidered for the houses in the area according to houses’ plan and section. This study is expected to give a visual evidence of wind pattern in a naturally ventilated house with a three-layers plan.
Characterization of cellulose acetate functional groups synthesized from corn husk (Zea mays)
Authors: Asriza R O , Ropalia  , Humaira D , Ryaldi G O , Zomi  
Published: December 2021

Abstract
The use of masks is very important to reduce transmission of the COVID 19 virus. Therefore, an innovation is needed from mask materials is that are environmentally friendly, have good filtration quality and have anti-virus agents. An alternative way to provide masks with good filterability using a raw material of cellulose acetate. Cellulose acetate has fibrils that are bonded together so that it can form dense fibers. Fiber is a semipermeable layer that functions as a particle filtration. Therefore, this study aims to get cellulose from corn husks via delignification. The research method consisted of extracting cellulose from corn husks and further synthesizing cellulose acetate. FTIR results showed an absorption peak at wave numbers 3349 cm-1, 1728 cm-1, 1252 cm-1, and 1031 cm-1. These peaks indicated the presence functional groups of OH, C=O, aryl ether, and C-O. This functional group indicates a cellulose acetate compound.