bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tuna Fisheries Thunnus albacares Small Scale in Kei Islands Moluccas Province
Authors: Sutanti Asri , Saleh Rachman 
Published: June 2020

Abstract

Potential of tuna fisheries in the Kei Islands is a source of livelihood for the local community. Studies on tuna fishing, processing techniques, fish processing units (UPI) and productivity of catches in the Kei Islands were analyzed descriptively so as to provide useful descriptions and information. Fishermen use a vessels measuring less than 5 GT (Gross Tonnage) and hand line fishing gear. Tuna fishermen in the Kei Islands are fishermen of one day fishing. Tuna fishes are distributed to UPI which processes tuna to be tuna loin. The number of UPI tuna loin in the Kei Islands is 3 units. Processing techniques are carried out with very simple methods and equipment. Based on assets and turnover owned, it is categorized as small scale UPI. The UPI’s compliance based on the provisions of fishery and marine legislation is categorized as a compliant UPI. The productivity of tuna caught by Kei Islands fishermen is 6.55 tons/ship/year it,s mean that in one year every Kei Islands tuna fishing vessel is able to produce 6.32 tons of tuna or 6,550 kg to be distributed to UPI tuna loin.
Demersal fish resources utilization and socio-economic of fishermen in Kotania Bay, Western of Seram. Indonesia
Authors: Huliselan NV , Sahetapy D , Wawo M , Tuapattinaya MA 
Published: June 2020

Abstract
Kotania Bay, have a very potential fisheries resources, including demersal fish that have high economic value. The utilization of fish resources is generally carried out by fishermen from villages around the Bay of Kotania, with fishing equipment that is friendly and not environmentally friendly. Fishermen activities cause the degradation of important ecosystems, therefore, the catch and size of the caught fish tends to decrease over time. The aimed of this study are to find the proper methods to manage demersal fish based on the socio-economic condition of fishermen. FGD and Interview methods were used to obtain informations about the location of catching, the catch and the species caught. The result showed that 46% of the residents of Pulau Osi village work as fishermen, while those from village of Wael are only 47.42%. Demersal fish catches were highest between January and February and the lowest during August. The catch consisted of family Serranidae, Lutjanidae, Scaridae and Labridae. The policies are needed to protect the demersal fish population, especially the endanger species through the concept sustainable management.
Cytotoxicity of methanol extracts of Prochloron didemni originated from ascidians Lissoclinum patella and Didemnum molle collected from Manado Bay, North Sulawesi
Authors: Rumengan I.F.M. , Modaso R. H. , Lintang R. , Rumampuk N. D. , Posangi J. 
Published: June 2020

Abstract
Among coral reef ascidians inhabiting Manado Bay, North Sulawesi, Lissoclinum patella and Didemnum molle were found housing symbiotic microbe in their tunics. These tunicates benefit from the association by feeding directly on the microbial cells, and in turn the microbe were facilitated to produce functional compounds such as anticancer cyclic peptides. Preliminary screening for these compounds were conducted by cytotoxicity assays against human blood cells. The symbiotic microbe was molecularly identified as Prochloron didemni. Microbial samples were obtained by squeezing colonial tissues from the two newly collected host ascidians. Crude extracts were prepared by extraction in 80% methanol, and followed by in vitro cytotoxic assayed against human blood cells using May-grunwald-Giemsa method. The extract of the D. molle derived Prochloron showed more cytotoxic effects than the one of the L. patella. However, the cultivation of Prochloron cells originated from D. molle was not established compared to those of L. patella. Therefore for further production of anticancer potential compounds, cultivation of the L. patella derived Prochloron is being developed.
Potential of Seaweed Gracilaria sp. As inhibitors of Escherichia coli, Clostridium perfringens and Stapylococcus aureus
Authors: Kaimudin Marni , Manduapessy Komers R.W. , Sumarsana  
Published: June 2020

AbstractThe problem of resistance and infectious pathogenicity of bacteria to humans is new at now. The search for alternative new drug compounds from seaweed bioactive content as one of the new antibacterial sources. The purpose of this research is to utilizeGracilaria sp. on the antibacterial effectiveness ofEscerichia coli,Clostridium perfringensandStapylococcus aureusThe method used in an experimental laboratory. Extraction was done by maceration with n-hexane, ethyl acetate and ethanol. Test antibacterial activity by agar diffusion method. Phytochemical screening based on discoloration. Analysis of bacterial cell leakage based on spectrophotometer results. Yields of 8.08% (ethanol), 5.47% (ethyl acetate) and 1.10% (hexane). Phytochemical screening results contain 6 secondary metabolite compounds in the ethanol and hexane treatment and 7 compounds in the ethyl acetate treatment. The best activity test results on ethyl acetate solvent with inhibition zone of 33.54 mm (Esherichia coli), 24.12 mm (Clostridium perfringens) and 29.14 mm (Stapylococcus aureus). MIC value at 0.51%. The absorbance obtained was 0.178 to 1.898 at a wavelength of 260 nm and 0.149 to 1,328 at a wavelength of 280 nm.
Seaweed Caulerpa sp position as functional food
Authors: Tapotubun Alfonsina Marthina , Matrutty Theodora E.A.A. , Riry Johan , Tapotubun Elizabeth Juleny , Fransina Eirene Grace , Mailoa Meigy Nelce , Riry Welly Angela , Setha Beni , Rieuwpassa Fredrik 
Published: June 2020

Abstract
Green seaweed Caulerpa sp is found in several coastal waters in Indonesia and is used as fresh vegetables by people in the growing habitat area. This study aimed to conduct a review of the potential of Caulerpa sp as functional food. The development of this paper is a literature review of relevant writings to determine the position of sea grapes Caulerpa sp as functional food. Data and relevant information are displayed in the form of figures and tables. Caulerpa seaweed grows naturally and is available throughout the year. Caulerpa contains crude fiber and secondary metabolites which positions Caulerpa as a functional food ingredient. The components of superior nutrition in Caulerpa are minerals, proteins, fats, and carbohydrates. The superiority of Caulerpa as a food ingredient is its processing which is very simple and brief and does not require food additives in the form of dyes and essences.
Evaluation of traditional traps: towards ecosystem-based fisheries management
Authors: Hutubessy BG , Mosse JW , Haruna  , Silooy F 
Published: June 2020

Abstract
In Maluku, Indonesia, trap fishing is one of the traditional fisheries that plays an important role in supplying reef fish to sea food restaurants and to the trade of live fish. To support the implementation of ecosystem-based fishery management, it is important to analyse the catch of trap through a multi-species approach rather than a single-species (selectivity) approach. In this study, multi-species catch analyses estimated species diversity, trophic levels and spatial distribution based on catch data, and sustainability of catch based on biological and ecological information. Traps were fished from February 2018 to January 2019 in waters 5 to 40m deep in Ambon Bay, Waai Bay and at Babar Island. The most abundant fishes caught were the family Mullidae, Parupeneus barberinus (n = 102) and P. indicus (n = 126). Spatial distribution of species analysed with Multivariate Principle Component Analysis showed each trap has significant co-varying species. The mean trophic level of the traps was 3.37 (SE: 0.175), indicating that the trap catches were dominated by low to moderate levels of carnivorous secondary consumers. From 42 species captured by traps, the least likely to be sustainable was Heniochus cuminatus and the most likely to be sustainable were, Selar boops. It is proposed that traditional trapping is a suitable practice in coral reef areas, with low impacts on the community of reef fish that eventually supporting balance fishery.
Design Of Automatic Switching System And Data Acquisition On Mobile Hybrid Solar Tracking System For Stand Alone Small PV With Reflector
Authors: Abadi I , Setyawan E H , Ardiansyah M 
Published: June 2020

Abstract
A hybrid solar tracker is required to maximize the energy efficiency of solar power. This system is inaccurately monitored and is not user-friendly managed. A simple and low-cost data acquisition system is needed to successfully designed for data acquisition and automatic switching on the hybrid solar tracker. The result reveals that the sunlight intensity with 3.5 volts threshold voltage becomes the switching parameter on hybrid solar tracker which affects the LDR voltage. The maximum distance of data transmission systems using telemetry 3DR module for blocked location is 120 meters, while the unblocked location is 350 meters. The existence of the automatic switching on the solar tracker may increase the output efficiency of the hybrid solar tracker PV with reflector can reach 51.56% compared to the fixed PV, with an energy deviation of 183.88 Wh. The energy generated by the tracker PV is 540.47 Wh, while the energy consumption of the main component is 71.68 Wh. Therefore, the energy that can be saved is 468.79 Wh.
The Effect of Fuel Filter Pore Size on B20 Fuel Filter Clogging at Low-Temperature Condition
Authors: Paryanto I , Rismana E , Arbianto AD , Prakoso T , Gozan M 
Published: June 2020

Abstract
One of the crucial problems in B20 implementation is fuel filter clogging problem, due to the presence of some glyceride impurities in biodiesel. The existence of monoglyceride in B20 fuel, even in a very low amount, could cause the formation of a precipitate, especially at low-temperature conditions. The accumulated precipitate could accelerate fuel filter clogging. To anticipate the problem, the precipitate formed in the B20 fuel based on the monoglyceride content in biodiesel should be tested using different pore sizes of fuel filter. This research was conducted by applying a modified CSFT method of ASTM D7501 for the precipitation test at 20°C using fuel filter pore sizes of 0.8, 3, 5 and 8 microns, respectively. Monopalmitin was added to biodiesel with low monoglyceride content to vary monoglyceride content so that each had approximate monoglyceride content of 0.623% and 0.824%, respectively. Each biodiesel sample with varied monoglyceride content was then blended with petroleum diesel fuel to produce B20 fuel samples. Each sample in the 100 ml separating funnel was separately soaked at 20°C for 21 days, then filtered, washed with petrol-ether, vacuum-dried, and weighed for constant amount of precipitate retained on the filter. The result showed that the wider the filter pore size was, the less the precipitate amount could be maintained on the filter.
Effect of Binder Adding to The Physical Properties of Municipal Solid Waste (MSW) Pellets
Authors: Nursani D , Siregar S R H , Surjosatyo A 
Published: June 2020

Abstract
Utilization of MSW as solid fuel has been developed through the process of gasification and pyrolysis. To improve energy efficiency during combustion, it needs uniformity of form and compaction, therefore MSW is formed in the form of pellets. The purpose of this research was to determine the physical characteristics of MSW pellets with the addition of binder and pellet drying process. Pellets consist of organic material, plastic, paper and leaves which are dried and crushed to reduce size. The material is mixed with the tapioca flour binder content of 0%, 3% and 6% and then compacted in the form of pellets. After the milling process, the pellets are dried with a treatment of 0, 6 and 12 hours to measure physical characteristics, moisture content and caloric value. Physical measurements consist of tests of density, durability and hardness. The developed pellet had a size length of 23.6 – 24 mm and diameter of 7.8-8.2 mm and 1.16-1.36 grams of weight the individual pellet. From the results of measurements and observations, pellets with 0% binder adding and 12-hours of drying can produce better quality, in the absence of fungal contamination and have a higher caloric value. MSW pellets from that process have achieved European pellet standards for physical properties, moisture content and caloric value.
Factors Influencing the Biogas Acceptance in Rural Area
Authors: Meidiana C , Hidayah A , Wijayanti W P 
Published: June 2020

Abstract
This study addresses how utilization of information such as livestock population, village maps and geographic information system (GIS) can be utilized to evaluate biogas production from livestock manure in rural areas. Cluster analysis was used to identify the appropriate locations for construction of anaerobic digester. The factors influencing the acceptance of biogas development were also analysed using regression analysis. The logistic regression model was employed for data analysis. The model was used furthermore to calculate the probability of acceptance of biogas development in the area of study. Calculation of potential biogas production is approximately about 24,560.64 MJ/day of energy can be produced. The determinants for biogas development acceptance ranges between 10% and 74.6%. The study was based on primary data that were elicited using open and closed-ended questionnaires. Empirically, the result indicated that number of cattle owned, age of household head, family size, land availability and knowledge are factors that have statistical significance (p < 0.05). Family size, land availability, knowledge positively influence the acceptance of utilization of biogas technology, while age of farmer and cattle ownership is inversely proportional to the acceptance. The model shows that if all factors drive, the probability can be increased up to 74.6% indicating that the use of livestock manure can be successfully developed in the area.
Preliminary Design of Phycocyanin Production from Spirulina platensis Using Anaerobically Digested Dairy Manure Wastewater
Authors: Taufikurahman T , Ilhamsyah D P A , Rosanti S , Ardiansyah M A 
Published: June 2020

Abstract
Phycocyanin is a blue pigment that is found in cyanobacteria such as Spirulina platensis. Its ability to provide stable and non-toxic blue color makes its market value is so high that it reaches USD 112.3 million in 2018. However, the cultivation of S. platensis to produce phycocyanin can only be carried out by large-scale industry, due to high operating costs of synthetic medium such as Zarrouk. We considered the use of Anaerobically Digested Dairy Manure Wastewater (ADDMW) as an alternative for growth medium to produce phycocyanin from S. platensis. A laboratory-scale study was conducted to determine the optimum composition of the medium containing ADDMW and NaHCO3 as a carbon source for S. platensis. We found that the ADDMW medium combined with 16.8 g/L NaHCO3 and 25 g/L NaCl resulted the highest productivity of phycocyanin among the other variations. Industrial-scale economic analysis of this integrated cultivation method showed its economic feasibility using 10 years lifetime analysis. Highest GPM (gross profit margin) obtained is 12.40 with IRR (internal rate of return) 23% which give 3.13 years of payback period. Futher study is needed on technical aspect and actual implementation of industrial scale design.
Heat Transfer Characteristics of Paraffin in Staggered Fins Heat Exchanger for the Cooling Process to Room Cooling Applications
Authors: Irsyad M , Akmal M , Susila M D , Amrizal  , Amrul  
Published: June 2020

Abstract
The night air temperature which is below or equal to the temperature of human thermal comfort is very potential to be used to help reduce the thermal load of the room. This utilization can help minimize the electrical energy consumption of air conditioning systems. Phase change material (PCM) can be used to utilize the potential of cold air at night as latent heat thermal energy storage (LHTES). One model of the application of PCM is the heat exchanger. PCM fills one part of the heat exchanger. The characteristics of heat transfer need to be known so that it can know the cooling rate and the time required in the process. The variable used in this study is the inlet air velocity. In this research, a staggered fins-type heat exchanger which contains PCM with paraffin material is used in the cooling process. The results showed that an increase in speed would accelerate the cooling rate. At a velocity of 3 m.s−1, the average cooling rate of the PCM mass unity was 6.4 °C.hr’.kg−1. With this rate of cooling, the potential for cold night air for about two to three hours can be utilized for the PCM freezing process.
Cooling Load Analysis in Asrama Kinanti 1 UGM Using Building Performance Simulation
Authors: Baskara S A , Adi G S , Utami S S , Prayitno B , Guntoro FX P J 
Published: June 2020

Abstract
Indonesia is predicted to increase energy needs by 4.1 GW each year until the year 2030. These energy needs are using fossil fuels, which will harm the environment because of air pollution. Based on that fact, the reduction of energy consumption in Indonesia is a must. One of the highest energy demands is in the building sector. The building for both residential and commercial consumes 61.5% of national total energy consumption. Moreover, in the building sector, almost 60% is consumed for air conditioning (AC) systems, and one-third of the total energy consumption is for other electrical equipment. Nevertheless, to maintain thermal comfort in a building, the AC system is crucial, and the intention to remove it reduces occupants’ comfort significantly. The AC system that has a lot of energy consumption depends on the cooling load. However, because of the complexity in the calculation, several heat gains in cooling load (namely, people, equipment, lighting, solar, and ventilation) need to simulate. In this study, the simulation software is IES-VE software. Furthermore, a research object in this study is Asrama Kinanti 1 that is known as a kind of residential building in Universitas Gadjah Mada, operating 24 hours a day. The results show that the external heat gains (solar and ventilation) can be minimized during 8:00 A.M. to 3:30 P.M. Meanwhile, the internal heat gains (lighting, people, and equipment) can be reduced during the rest of the day.
Implementation of 10% Cutting Movement in Building a Lighting System on Postgraduate Diponegoro University
Authors: Wijayanti R W , Prianto E , Windarta J 
Published: June 2020

Abstract
Until now, the need for energy continues to increase while the energy source is running low. Therefore, the Government issued various policies to conserve resources and improve the efficiency of energy utilization. One is through energy conservation programs in all sectors of life, called the 10% Cutting Movement. The program is promoted in the hope that people can reduce energy consumption up to 10% of daily energy use as well as in the academic environment. This research aims to implement a 10% cutting movement in lighting system in Diponegoro University postgraduate building and find out how much savings can be achieved. The implementation is carried out purely and modified by following existing standards. Pure implementation is done by setting a target of 10% savings on the overall energy consumption of the lighting system. While modification implementation is done by determining the 10% savings target, then adjusting the lamp usage hours. The savings obtained from the pure implementation amounted to 1.91 MWh / year, whereas in modifications implementation results obtained in the amount of 1.99 MWh / year. The savings from both methods is bigger than the specified savings target.
The Study of the Smart City Concept Development, Based on Public Open Space Elements (case study: Kambang Iwak and Opi Jakabaring Lake)
Authors: Amalia F , Hanum M , Drastiani R , Tondi M L 
Published: June 2020

Abstract
Currently, the concept of urban development is directed to the smart city concept. With this concept, it is expected that city dwellers will get decent, quality, and sustainable city services. Public open space in Palembang is one of the crucial elements in the urban system, which is part of public services. Public open-space has a role as one of the aspects of the concept’s developer. This research aims to determine the character of green open space in Palembang to become one of the elements of developing smart city concepts. The method used in this research is descriptive qualitative. The results showed that green public open space has a role in the formation of a smart city. The idea of a smart city is not just about technology, but also how elements in open space act as solutions and improve the quality of the environment. The characteristics of the smart city concept can be developed according to the potential and problem of the city. The inherent characteristics of smart cities in public open spaces are smart living, smart environment, and smart infrastructure.
Application of Web 3D GIS to Display Urban Model and Solar Energy Analysis using The Unmanned Aerial Vehicle (UAV) Data (Case Study: National Cheng Kung University Buildings)
Authors: Dewanto B G , Novitasari D , Tan Y C , Puruhito D D , Fikriyadi Z A , Aliyah F 
Published: June 2020

Abstract
Nowadays, the era encompasses everything smart, whether they are smartphones, smart people, or smart cities. The term ‘Smart Cities’ refers to an advanced urban town that has well-connected infrastructure and communication through data centers and automated networks, unless for the energy system. Solar energy is one kind of renewable energy. It is a clean, sustainable, and free energy source both for the public and governments. With the rapidly growing technology, the yield of solar energy increases, while its cost reduces. Thus, it gains importance and becomes widespread. Presently, the increasing importance of solar power makes a hot topic. We are currently facing a global warming issue where one of the leading causes is the use of fossil energies. Non-fossil energy, or better known as renewable energy, is an option to reduce the use of fossil energy as an effort to minimize the impacts of global warming. In this study, we collected the data from The Unmanned Aerial Vehicle (UAV) that is combined with GPS and IMU technology to get the 3D campus model in National Cheng Kung University (NCKU), Taiwan. The output of the data is true ortho-image, digital surface model (DSM), and building footprint. The building footprint was processed using the Autodesk Insight 360 and Autodesk Revit to get better 3d campus model. All three data were processed using ArcGIS Pro using Calculate Solar Radiation plugin. The result of this step is reaching the solar energy potential of NCKU. The final step is to show it into the Web 3D GIS to display the result. From the Web 3D GIS, everyone can access the information of NCKU solar energy potential using computer and also smartphones.