bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bi-level Optimizations of Multi-Components Virtual Power Plant for Economic Dispatch and Renewable Utilization
Authors: Shen Liwei , Lv Yueqiu , Liu Bei , Shen Xu , Zhan Yanqi , Li Qinmiao 
Published: October 2022

Abstract
The significant injections of renewable power have been leading to risks of safety and stability of power system by curtailing system inertia. Based on the requirement of ‘carbon neutralization’ policy, independent participants including energy storage (ES), load demand response (LDR) and virtual power plant (VPP) are introduced into system as innovative ancillary service methods. This paper proposes a bi-level optimization method to achieve the economic dispatch of multi-components virtual power plant consisting with gas generator, PV, wind turbine, energy storage and electricity vehicle in the day-ahead optimization, while achieving the maximum renewable power utilization in the real-time optimization by adjusting dispatch plan. This method considers constraints including solar/wind power forecasting, load level forecasting, ES charging/discharging constraints, and DC power flow limits. A case study based on practical project is present, showing that the bi-level optimization is capable of achieving diversified resources aggregation in extended region, as well as the economic optimization and green energy consumption target.
Combined feed-forward control strategy for LCL-type grid-connected inverters
Authors: Wang Lu , Zhang Yiming , Wang Xuhong 
Published: October 2022

Abstract
LCL-type grid-connected filter circuits are widely used for line network transmission because of their high ability to suppress current harmonics. However, due to the presence of resonance points in this third-order circuit, the system can generate severe oscillations. In order to improve power quality, a combined feed-forward factor control strategy is proposed in this paper. The control system introduces a combined feed-forward factor and incorporates the idea of dual PI control to ensure that the order of the system is reduced while improving its stability, followed by a detailed derivation of the constraint equations for each link parameter. The simulation verifies that the control scheme can regulate the output voltage of the line network and effectively reduce the harmonic content of the line network, providing a reference for reducing the harmonic content of grid-connected currents in engineering.
Urban Integrated Energy Edge Collaboration and Privacy Protection Based on the Federated Learning Framework
Authors: Lv Dongdong , Zhang Xiaohui , Zhu Guangping , Wang Jing , Li Wenjing 
Published: October 2022

Abstract
In the context of building a low-carbon integrated energy city, the energy data of electricity, water, heat, gas and other in city belong to different public utility management departments, and there are information barriers and data privacy protection issues between different energy systems. Under the premise of ensuring data security, aiming at the problem of training algorithm models for different energy data, the energy edge collaboration architecture based on homomorphic encrypted federated learning is proposed firstly, and then the urban comprehensive energy federated learning model is established to realize the local training model and transmit the updated model parameters to the server. Finally, the prediction of multivariate short-term loads by federated learning framework training and centralized training neural network models is verified by comparative experiments, and the results prove the feasibility and superiority of urban integrated energy edge collaboration and privacy protection based on federated learning framework in the field of urban integrated energy.
The Effect of Dosage and Biochar Types On the Availability Of Phosphorus Nutrients In Acid Soil In Sebatik, Indonesia
Authors: Mansyur N.I , Pudjiwati E.H , Rizki T.N 
Published: October 2022

Abstract
The low availability of P nutrients is one of the problems in managing acid land in Sebatik. The low availability of P in acidic soils is due to the low soil pH and the high Al-exch solubility. One of the efforts to increase the availability of P is by increasing the soil pH and reducing the solubility of Exchangeable Al through the addition of a soil amendment agent, namely biochar. This study aims to determine: 1) the effect of the type of biochar on P availability; 2) the effect of biochar dose on P nutrient availability; and 3) the effect of the combination of types and dosage of biochar on the availability of P in acid soils in Sebatik. The study was conducted using a completely randomized design (CRD) 2 factors, namely the type of biochar (coconut shell and palm shell) and the dosage of biochar (0, 0.5, 1.0 and 1.5 g), resulting in 8 treatment combinations, repeated 3 times. produced 24 experimental units, which were incubated at 0, 21 and 42 days. The parameters observed were soil pH, C-organik content, Exchangeable Al solubility, and available P-soil. The results of this study indicate that the type and dose of biochar can increase the availability of P from very low to medium. The highest availability of P nutrients was obtained in the provision of palm shell biochar (6.36 ppm), a biochar dose of 1.5 g (8.64-8.80 ppm), and in a combination of coconut shell biochar with a dose of 1.5 g (8. 80 ppm).
The Activity of Strawberry Extract as Sunscreen on Guinea Pigs Exposed to Sunlight
Authors: Harahap Elfida Sari , Ginting Chrismis Novalinda , Lubis Yuliani Mardiati , Chiuman Linda 
Published: October 2022

Abstract
Sunscreen that is often used contains synthetic compounds causing undesirable effects such as irritation, allergy, and anaphylactic reactions. One of the natural ingredients with this potential is strawberry. Therefore, this experimental study aims to determine the activity of strawberry extract as a sunscreen on guinea pig skin exposed to sunlight. The 24 guinea pigs used were divided into 4 groups and terminated on day 14, while the changes in the amount of melanin pigment were examined after the treatment. The results showed that the melanin in the skin tissue was reduced after the application of the extract. This indicated that there is a significant effect on the amount of melanin pigment of guinea pig skin tissue exposed to sunlight with F count (741.787) < F-table (4.27) and sig-p = 0.000 < 0.05. Moreover, the decrease in the amount of melanin pigment was higher in group C compared to group D.
Manufacture of LDPE Plastic Waste Briquettes a Mixed Pine Needles and Clay with Various Compositions as Alternative Fuels
Authors: Fitriani  , Haswin  , Basir A 
Published: October 2022

Abstract
Along with the times, the need for fossil fuels as the main energy source to support various activities of human life is also increasing. it is necessary to treat plastic waste to produce briquettes as an alternative fuel. Briquettes are solid fuels that can be used as an alternative energy source that has a certain uniform shape. In Tarakan City, we often encounter a lot of waste, especially plastic waste that is difficult to decompose, one of which is Low Density Polyethylene (LDPE). LDPE is one type of plastic that we encounter everyday in various applications and often ends up as waste such as plastic bags and plastic wrap. The use of plastic waste into briquettes with the addition of pine fruit obtained results from a mixture with various ratios of 30:50:20 the value of ash content and water content is in accordance with SNI with a calorific value and electrical energy generated of 3182.4Q(j)and 3183,39W(j)
A Comparative Analysis of Essential Oils from Three Species of Cinnamomum Growing Wild in East Kalimantan
Authors: Kuspradini Harlinda , Putri Agmi Sinta , Ardiana Dewi , Egra Saat 
Published: October 2022

Abstract
The Cinnamomum genus is a plant of the Lauraceae family. This plant is widely spread on the island of Borneo. In this study, the essential oils of plant leaves originating from the Cinnamomum genus were tested for their antimicrobial activity. The types of plants are Cinnamomum burmannii, Cinnamomum parthenoxylon, and Cinnamomum inners. The essential oils derived from the leaves of Cinnamommum genus which grown in East Kalimantan were obtained by steam distillation. The yield of 0.6% 1.64%, and 0.01% of essential oil were obtained from C. burmannii, C. parthenoxylon, and C. inners, respectively. The oils were examined by gas chromatography to determine their major constituents. The major constitutents of C. burmannii were eugenol (85.03%), C. parthenoxylon were safrole (55.38%), while the major constituents of the C. inners were Cyclobutal (1,2,3,4) dicyclooctene,hexadecahydro (17.94%). The essential oils were also examined for their antimicrobial activities on yeasts and bacteria. The microbial used were Streptococcus mutans, Streptococcus sobrinus, Candida albicans, and Staphylococcus aureus. Two methods (agar diffusion and broth microdilution) were used to assess the antimicrobial activity. The Minimum Inhibitory Concentration (MIC) and minimum bactericidal concentration (MBC) were determined in every case. All types of plants Cinnamomum genus in this study has the potential in inhibiting the growth of Streptoccus mutans, Streptococcus sobrinus, Candida albicans, and Staphylococcus aureus.
Food Security and Welfare Of Lowland Rice Farmers Analysis In The Border Area Of North Kalimantan
Authors: Sulistyo Anang , Khaerunnisa  , Suhaena  
Published: October 2022

Abstract
Household welfare is related to the fulfillment of basic human needs, namely food so that household welfare is related to food security. Household (family) food security can be defined as the ability of the family to access food properly to provide for the lives of family members. This research was conducted in Binalawan Village, West Sebatik District, North Kalimantan Province. This study aims to, (1) determine the income of rice farming (2) determine the contribution of rice farming income to total household income (3) determine the food security of farm households and (4) determine the welfare of rice farmers’ households. The method of determining the sample in this study using purposive sampling with the number of respondents as 42 farmers. The analysis used is the analysis of farm costs, revenues, income, contribution of farm income, analysis of food security (TSP) and analysis of food welfare. The results showed that the income of rice farming was Rp. 2,008,644.50 per year. The contribution of rice farming income to total household income is 4.737%. The household food security of rice farmers is 1.58, which means that the household’s ability to meet the food consumption needs of rice farming products can meet the needs of rice equivalent. Welfare of farmer households with a purchasing power level of 2.02 and a GSR of 1.44 which means that the economy of rice farmers’ households is classified as less prosperous.
Relationship between Work Position and Musculoskeletal Complaints among Vegetable Farmers
Authors: Samosir Frans Judea , Sinurat Buenita , Pasaribu Nova Oktalia 
Published: October 2022

Abstract
Musculoskeletal complaints are often experienced by workers, especially vegetable farmers who work repeatedly; resulting in a decrease in muscle and bone strength. This study aimed to determine the relationship between work position and musculoskeletal complaints in vegetable farmers. The type of research used is an observational study with a cross-sectional design. The sample in this study was 30 vegetable farmers recruited by using the purposive sampling technique. The research instrument used a Nordic Body Map questionnaire and REBA (Rapid Entire Body Assessment) sheets. The results of statistical tests using the Spearman’s Rho Correlation test showed there is no relationship between age (p-value = 0.069) and the working position bent at the time of hoeing (p-value = 0.093) with musculoskeletal complaints. However, there is a relationship between working period (p-value = 0.005), standing work position when lifting weights (p-value = 0.045), and sitting position when harvesting (p-value = 0.002) with musculoskeletal complaints. It is important for vegetable farmers to improve their work positions to be more comfortable and safer, to consume healthy food for muscles and bones, and to get adequate rest.
Analysis of Morphometric and Gene of Bombay-duck (Harpodon nehereus) in Tarakan Waters
Authors: Taqwa Amrullah , Burhanuddin Andi Iqbal , Niartiningsih Andi , Natsir Nessa M. , Irmawati  
Published: October 2022

Abstract
Bombay-duck (Harpadon nehereus) was one of economically valuable fish at Tarakan waters. This fish was caught by trawl and jermal. In this study, samples were taken from two fishing area, that were Juata and Amal. 20 characters morphometric was measure carried out on 100 samples from each area. Molecular identification and phylogeny of this species used Cytochrome C Oxidase Subunit I (COI) gene. The phylogenetic tree was constructed used MEGA 5.0 program. There were 5 significantly different characters between sample from Juata and Amal, that were body weight (P = 0.00), distance between pelvic and anal fins (P = 0.001), caudal fin height (P = 0.009), pelvic fin base length (P = 0.015), and dorsal fin base length (P = 0.031). Molecular identification showed that samples were the same species. The genetic distance between samples from Juata and Amal was 0 (zero).
The Sand Column Utilizing for Clay Soil Reinforcement
Authors: Hasrullah  , Iman Miftahul , Harwadi Fuad 
Published: October 2022

AbstractThis research aimed to find out the physical and the mechanical characteristics from clay soil at the research location. To find out the magnitude capacity from sand column that occurred in clay soil. Then, to find out the comparison from clay soil subsidence that occurred when given reinforcement by using sand columns and with not given reinforcement, with using several tests that was compared the results from laboratory analysis with the results from plaxis 2D program analysis. The method used in this research was ASTM (American Society for Testing and Materials) method. The experimental method of test development was carried out to test the design of reinforcement model in a cylindrical tub (iron drum) test with 60 cm diameter and 50 cm height. The research results showed, the pattern from soil subsidence that occurred with using sand column reinforcement was very influential in reduced the soil subsidence. From the results of the laboratory analysis and plaxis 2D program analysis, the reinforcement from sand column as the reinforcement in soil with used the bearing plat. The results were not different in the endloading.
Identification of Fatty Acids in Virgin Coconut Oil (VCO), Cocoa Beans, Crude Palm Oil (CPO), and Palm Kernel Beans Using Gas Chromatography
Authors: Sabahannur St , Alimuddin Suraedah 
Published: October 2022

Abstract
This study aims to identify saturated and unsaturated fatty acids in Crude Palm Oil (CPO), palm kernel seeds, Virgin Coconut Oil (VCO), and cocoa beans using Gas Chromatography (GC-FID). The results of GC-FID analysis showed that VCO contains 90.896% saturated fatty acids, 49.382% CPO, 37.395% palm kernel seeds, and 21.197% cocoa beans. Lauric acid is the highest component in VCO, namely 45.567%, while in CPO the highest component is palmitic acid 43.343%, palm kernel seeds are lauric acid 21.683%, and steric acid 12.120% in cocoa beans. The most unsaturated fatty acids were found in CPO, namely 50.517%, and cocoa beans 11.825%. The unsaturated fatty acids in CPO are oleic acid 39.538% and linoleic acid 10.290%, while in cocoa beans linoleic acid is 11.016%.
Environmental Spatial Planning In The Perspective of Law 11/2020 Concerning Job Creation
Authors: Zein Yahya Ahmad , Nurasikin  
Published: October 2022

AbstractThis study aims to strengthen juridical arguments in the context of the need for Environmental Spatial Planning, especially in Law 11/2020. The results conclude that the Environmental Spatial Planning in the Perspective of Law No. 11/2020 should be capable of ensuring future generations experience welfare and environmental preservation, exceptionally safe, comfortable, productive, and sustainable spaces as guaranteed by Article 33 Paragraph (4). The aspects and paradigms of the national development should be based on Constitutional Principles, one of which is the environmental principle. However, the development strategy at the domestic level does not require regulations when the purpose of Article 33 (4) of the UUD 1945 is violated. The Job Creation Law implementation should be oriented towards the welfare and preservation of the community’s environment. Furthermore, spatial planning should not ignore environmental concepts to accelerate public interest appropriate with the objectives of the Constitution of Indonesia.
The Reduction Of Armyworms On Mustard Greens Using The Extract Of Papaya Leaf And Kipahit Leaf
Authors: Karo-Karo Ulina , Gultom Dameria , Ginting Rapael , Kurnia Muhammad Aditya , Pasaribu Mira Helia Cristy , Siagian Elisabet , Manurung Cronika H. 
Published: October 2022

Abstract
Papaya leaf contains an active substances, i.e. papain that can control worm and pest effectively. It also can be contact poison for pest. This research aims to know the reduction of armyworms (Spodoptera) on mustard greens (Brassica juncea) by giving the extract of papaya leaf (Carica papaya L.) and kipahit leaf (Tithonia diversifolia) to prevent chemical pest poisoning on farmers. This is an experimental research with The Only Controlled Group design. Statistic test for this research is Anova test with 95% confidence interval and significance value 0,007<0,05. The conclusion of this research is there is papaya leaf extract can reduce Spodoptera effectively. Meanwhile, kipahit leaf extract cannot reduce Spodoptera effectively, with 0,068 significance value.
The impact of motivation on the willingness of farmers to become entrepreneurs in the sebatik sub-district in the Indonesia-Malaysia border region
Authors: Mubarak A , Jafar Rayhana , Hendris  , Agang MW 
Published: October 2022

Abstract
Entrepreneurial motivation of farmers in growing entrepreneurial intentions for farmers in increasing agricultural productivity and business sustainability is an important variable in agribusiness development in the Indonesia-Malaysia border region. This study aims to determine 1) the influence and relationship between entrepreneurial attitudes, subjective norms and self-efficacy on entrepreneurial motivation, 2) the influence of entrepreneurial motivation on entrepreneurial intentions. The population in this study were farmers in five sub-districts in the border area of Sebatik Island with a total sample of 250 farmers determined by purposive sampling method. Testing the data analysis model developed in the study used the Structural Equation Model (SEM) assisted by the AMOS program. The results show that the overall model built in this study meets the model fit norms, which means that the model developed in this study is in accordance with existing empirical conditions. There is a significant influence and relationship between entrepreneurial attitudes, subjective norms, and self-efficacy on entrepreneurial motivation and entrepreneurial motivation has a significant and positive effect on farmers' entrepreneurial intentions on Sebatik Island, the Indonesia-Malaysia border region.”
Diversity and Habitat Preferences of Orchids in Tarakan Forest
Authors: Wijarini Fitri , Siregar Muhammad Abrar Putra , Adhani Aidil , Elisia Nur , Siahaan Susi Yantika , Sinaga Jamardi 
Published: October 2022

Abstract
Orchids is one of biggest biodiversity in Borneo. The presence of orchid in nature also indicate the stabile ecosystem. But, because the potential of orchids as the ornamental plant, the exsistinct of them is threatened. So, the aim of this study is to analyse the species diversity indext and habitat preferences of orchid in Tarakan forest. the method of this study was a survey by exploring the forest of Tarakan Orchid Garden area. The environmental parameters of each recorded orchid is measured, they are light instensity, altitude, temperature, and humidity. The orchid species that have been identified are then searched for the value of the important index of species diversity using Shannon-Winner equation. The study revealed that there were 6 species of orchids (Cattleya luteola, Catasetum sp., Bulbophylum phaleoanopsis, Bromheadia sp., Bromheadia finlaysoniana, Dendrobium anosmum) in research location. The biodiversity indext for 6 orchid was in low category with average value 0.1998. Researcher recorded that there were two types of habitat preferences of orchid in research area, namely epiphytic and terrestrial. The balance of all environmental parameters that measured are strongly affected the orchid diversity and growth.
Preliminary Study of Beef and Pork FTIR Spectra: PCA Analysis
Authors: Hudha M N , Ni’mah Y L , Madurani K A , Andrayani M E , Kurniawan F 
Published: October 2022

AbstractIdentification of pork and beef has been performed using the ATR-FTIR. Pork and beef spectra have their characteristics so that they can be distinguished. The beef was bought from Super Indo Kertajaya Surabaya, and the pork was bought from Pabean Surabaya’s traditional market. The sample was cut into ten small and thin sections according to the size of the instrument chamber and immediately characterized without any other preparation. The sample was measured using ATR-FTIR at a wavenumber of 400-4000 cm−1. The beef spectrum showed peaks characteristic at wavenumber 1480-1575; 1670-1700; 2853-2962; and 3000-3600 cm−1while pork spectrum showed peak characteristic at wavenumber 1480-1575; 1670-1700; 2853-2962; and 3000-3600 cm−1. Both spectra are hard to distinguish directly. Therefore, it is necessary to analyze the data using principal component analysis (PCA). The PCA results showed that the data reduction of the first principal component (PC1) and the second principal component (PC2) representing the PCA plot scores of beef and pork were successfully differentiated.
Evaluation of Multi-temporal Imagery and Vegetation Indices for Mangrove Mapping (Case Study of The East Coast of Lampung)
Authors: Simarmata Nirmawana , Wikantika Ketut , Darmawan Soni , Tarigan Trika Agnestasia , Aldyansyah Muhammad , Tohir Rizki Kurnia , Purnama Yustika , Yewanda Cylia Nova 
Published: October 2022

Abstract
Mangrove ecosystem monitoring aims to provide information on a regular basis to be used as a reference in sustainable management activities in an effort to maintain the functions and services of the mangrove ecosystem. Mangroves have a very high level of threat to exploitation, namely logging and land conversion which can cause increasingly damaged conditions. This study aims to map changes in mangrove density by comparing several methods using multi-temporal data. The satellite image data used are Landsat images in 2010, 2015 and 2020. The research method used is the transformation of the vegetation indices ARVI, DVI, EVI, GNDVI, MSAVI, NDVI, RVI and TSAVI. Based on the results of the analysis carried out, the identification of mangrove density shows that the index value is in the range -1 – 18.31 with the division of density classes into 5 classes, namely very low, low, medium, high and very high. The mangrove class is in the range of values from 0.4 to 0.8 with a medium to very high density class. The results of the map accuracy test which were validated using 30 samples in the field obtained an accuracy of 84.38%. This accuracy value is quite good with the multi-temporal image used is of medium resolution.