bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of habitat suitability of birds family Accipitridae in the forest park of Pocut Meurah Intan
Authors: Gagarin Y , Abdullah A , Khairil K , Djufri D , Supriatno S 
Published: December 2021

Abstract
Birds are often used as indicators to describe the state of biodiversity, which means areas that are important for birds are also important for other flora and fauna. In addition, the distribution area of birds is well known, so that important regional livelihoods using birds as indicators can be carried out quickly and comprehensively. This research was conducted in February 2021, aiming to observe the habitat conditions of the Accipitridae family birds in Tahura Pocut Meurah Intan, Aceh Province. The method used in this research is an exploratory survey method. Data collection in the field by placing 15 observation points and 3 line transects is combined using the “look down method” and “upward observation”. Data analysis using principal component analysis (PCA) method. The results obtained that the area of suitable habitat (suitable) with good categories for bird species of the family Accipitridae of 4306, 106 ha or 69.23% and the medium category, which is available for food and accessible, but there is no reproductive location and has a high level of disturbance. of 1727, 294 ha (27.77 %). Birds of the Accipitridae family can carry out activities and find prey in three different forest types, namely primary, secondary and open forests.
Developing a groundwater conservation area using analytical hierarchy process in Randublatung groundwater basin
Authors: Hartono A , Hendrayana H , Akmaluddin  
Published: December 2021

Abstract
Randublatung Groundwater Basin is a cross-regional Groundwater Basin located in Central Java with an area of 203 Km2. The increase of population in this area led to the increasing need for groundwater not only for freshwater sources and consumption but also for agriculture and industrial needs. The rise of uncontrolled groundwater usage can result in pollution and degradation in the quality and quantity of groundwater. There need to be conservation efforts to maintain the sustainability of groundwater utilization. This study aims to determine conservation zones and management priorities in the Randublatung groundwater basin area. Conservation zones are determined based on the value of their parameters: (a) availability and potential of groundwater, (b) groundwater depletion, (c) changes in groundwater quality, (d) land use, (e) aquifer characteristics, (f) prioritization of groundwater protection areas, and (g) water use. Those parameters are weighed using the Analytic Hierarchy Process (AHP) method and then overlaid corresponding to the weight of the parameter to acquire the matrix of conservation zones. The results indicate the type of lithology in the research area was an alluvial deposit—the development of the data processing presented in the form of a map of groundwater. There are four types of conservation zones in a confined aquifer, i.e., secured, vulnerable, and critical.
Prediction of water content and soluble solids content of ‘manalagi’ apples using near infrared spectroscopy
Authors: Kusumiyati K , Hadiwijaya Y , Suhandy D , Munawar A A 
Published: December 2021

Abstract
The purpose of the research was to predict quality attributes of ‘manalagi’ apples using near infrared spectroscopy (NIRS). The desired quality attributes were water content and soluble solids content. Spectra data collection was performed at wavelength of 702 to 1065 nm using a Nirvana AG410 spectrometer. The original spectra were enhanced using orthogonal signal correction (OSC). The regression approaches used in the study were partial least squares regression (PLSR) and principal component regression (PCR). The results showed that water content prediction acquired coefficient of determination in calibration set (R2cal) of 0.81, coefficient of determination in prediction set (R2pred) of 0.61, root mean squares error of calibration set (RMSEC) of 0.009, root mean squares of prediction set (RMSEP) of 0.020, and ratio performance to deviation (RPD) of 1.62, while soluble solids content prediction displayed R2cal, R2pred, RMSEC, RMSEP, and RPD of 0.79, 0.85, 0.474, 0.420, and 2.69, respectively. These findings indicated that near infrared spectroscopy could be used as an alternative technique to predict water content and soluble solids content of ‘manalagi’ apples.
Response of in vitro propagated fig (Ficus carica L.) shoots to the concentrations of benzyl amino purine and coconut water
Authors: Sophia  , Hayati M , Kesumawati E 
Published: December 2021

Abstract
In this study, several concentrations of benzyl amino purine (BAP) and coconut water (CW) were investigated along with the interaction between two factors to the growth of in vitro propagated fig shoots. The investigated factors consisted of BAP concentration: 0, 1, 3, 5 mg L−1 and coconut water concentration: 0, 100, 200, 300 ml L−1. A total of 16 treatment combinations with 6 replications resulting in 96 experimental units consisting of a single fig shoot explant per culture medium. The observed parameters including living explant rate, contamination rate, browning rate, day of first shoot emergence, shoot formation rate, explant height addition, number of leaves, callus formation rate, and number of roots were conducted every week from 1 to 8 weeks after proliferation (WAP). The result indicated that in 8 WAP, the living explant rate reached 23.95%. The combination of concentration 200 ml L−1 CW and 3 mg L−1 BAP + 200 ml L−1 CW-induced early emergence of new shoots at 7 days after proliferation (DAP). The highest shoot formation rate (100%) was observed at a concentration of 300 mL L−1CW. The highest explant height addition (7.10 cm) was observed at a concentration of 200 mL L−1 CW. The highest number of leaves (5.80) was observed at a concentration of 1 mg L−1 BAP + 200 mL L−1 CW. The highest callus formation rate (50%) was observed at a concentration of 100 ml L−1CW and 300 ml L−1 CW. The highest number of roots (17) was observed in the control.
Study on the separation of phospholipids from crude palm oil using a polyethersulfone ultrafiltration membrane
Authors: Razi F , Yulia M , Erfiza N M , Asnawi A 
Published: December 2021

Abstract
Crude Palm Oil (CPO) extracted from the palm fresh fruit bunches (FFB) should be refined to meet the specified quality for edible oils. One of the components that are removed in the CPO refining process is a phospholipid. Phospholipids are undesirable because they form mucus (gum) in CPO and enhance the emulsion formation during oil processing. As one of the emerging separation processes, membrane technology could be proposed on phospholipid removal in CPO. The research objectives are to synthesize polyethersulfone (PES) ultrafiltration (UF) membrane and evaluate its performance on phospholipids removal in CPO. Besides, the effects of temperature and pressure on UF-PES membrane performance in phospholipid removal were also studied. The UF-PES membrane was prepared by phase inversion method with the composition of PES polymer of 17.5%; Polyethylene Glycol (PEG) polymer as much as 2.5% as pore-forming agent; and 80% (w/w) of N-Methyl Pyrrolidone (NMP) as a solvent. Two types of the UF-PES membrane have been synthesized, namely M1 and M2 membranes. Furthermore, the M1 membrane was selected for the filtration process due to its high resistance to pressures up to 3 bar. The result indicated that the pressure (T) and temperature (S) significantly affected phospholipid removal. The lowest phospholipid removal was obtained in the S2T2 treatment, about 78%. Moreover, the S3T1 and S3T2 treatments gave a stable permeation flux in comparison to the others treatment.
Comparisons among measurement approaches to determine blood loss with different environmental sanitary effects
Authors: Sulastri  , Siregar T N , Adlim M , Hasanuddin  
Published: December 2021

Abstract
Labour and delivery are hazardous processes for bleeding. It will have complications, and even death for maternal because of overdue recognition and identification of the early signs of bleeding. Postpartum hemorrhage is still a problem and a major cause of maternal death. The definition, bleeding threshold, and method of assessing blood loss are still being debated today. This literature review aimed to determine the methods that had been used in measuring the amount of blood loss and risk to the mother. The review used Science Direct and Pubmed electronic online databases with related keyword searches. Measurement of blood loss was categorized into several methods, including visual estimation, direct measurement, gravimetry, and photometry. These methods were explained and then compared with various similar methods. Several studies indicated that measuring the amount of blood loss still often used conventional methods, even though this method was very improper and tends to underestimate blood loss. Several accurate and objective quantification methods had been introduced, but they were still very complicated, expensive, and time-consuming. Based on the review results, various types of blood loss measurement methods were displayed, but they were still not practical, accurate, and reliable. Researchers continue to carry out improvement research in finding methods so that postpartum hemorrhage can be prevented and treated.
Characterization of cellulose nanocrystalline isolated from banana peduncles using acid hydrolysis
Authors: Ratna  , Aprilia S , Arahman N , Munawar A A 
Published: December 2021

Abstract
The study aimed to characterize cellulose nanocrystalline (NCCs) from banana peduncles using acid hydrolysis. The NCCs isolation process was done by hydrolysis using H2SO4 with concentrations of 1M, 2M, and 3M at a microwave power of 100 Watts within 1 hour of hydrolysis. The product of NCCs was characterized in term of yield, chemical composition (by FTIR), and its crystallinity. The result showed that the highest yield of 88.33% was obtained in acid hydrolysis at the concentration of 1M H2SO4. The results of the FTIR test showed that non-cellulose content had been removed and demonstrated that the molecular structure of cellulose does not change even when treated at different acid concentrations. X-Ray Diffraction analysis showed that crystallinity decreased by increasing the sulfamic acid concentration. The thermogravimetric analysis confirmed the heat resistance analysis and showed that the NCCs is gradually decomposed at a temperature range of 268.3–415.25 ¼C. The colour of cellulose nanocrystalline powder darkens as the sulfuric acid concentration increases.
Inhibition of the α-glucosidase enzyme from Pelawan stem extract (Tristaniopsis merguensis Griff)
Authors: Mahardika R G , Kusuma G P , Roanisca O , Henri  
Published: December 2021

Abstract
Diabetes mellitus continues to increase along with the increasing pattern of consuming ready-to-eat foods. The consequences of this habit will have a negative impact on the health of the body so that it can cause death. Treatment of diabetes mellitus is carried out in various ways, including administration of insulin and synthetic drug therapy. However, this medication has dangerous side effects. Therefore, research was carried out on Pelawan stems (Tristaniopsis merguensis Griff) which have the potential to be associated with secondary metabolites and bioactivity as antidiabetic so that they can be considered as raw material for herbal medicines in the future. total phenolic content of the methanol fraction of T. merguensis stems is 176.37 mg GAE/g DW. The total flavonoid content of the methanol fraction of T. merguensis stems is 9.85 mg QE/g DW. The results of the antidiabetic test for the methanol fraction of T. merguensis stems obtained an IC50 of 5.31 μg/mL. When viewed from the qualitative results of phenolics and flavonoids that have been carried out, it is likely that the activity of the α-glucosidase enzyme in this study is more influenced by polyphenolic compounds.
Farmer exchange rate category: A Prediction analysis using ANN back propagation
Authors: Syaharuddin  , Azis Z , Panggabean S , Dachi S W , Nurhayati  , Suwati  , Apriyanto M , Utami R R 
Published: December 2021

Abstract
The Farmer Exchange Rate (FER) is one of the indicators in determining the welfare level of farmers. Every month this large FER has a change especially at the end of each season during harvest, the price game especially from producers often occurs so that not a few farmers complain and suffer losses. Therefore, there need to be efforts from the government is looking at past data trends to find the amount of FER in the future so that policies can side with farmers. Artificial Intelligent with a multilayer Back Propagation method is very good for modeling and forecasting of data series in the past with data input in the form of a matrix mxn. The simulation results show that in 2020 in NTB there is an average increase in the exchange rate of farmers of 118.76%, this means that farmers are experiencing a surplus or farmers’ incomes are rising more than their expenditures. However, it appears that from June-August and October-November there was an average decrease of 2%, although overall there was increase of 2.076%. This result was obtained by the construction of a network architecture of two hidden layers where theMSE of 0.12, and MAPE of 0.23.
The effect of flood on slope stability along downstream riverbank of MuaraBangkahulu River, Bengkulu City, Indonesia
Authors: Mase L Z , Amri K , Frisky M , Anggraini P W , Fikri M N , Agustina S 
Published: December 2021

Abstract
The flood which occurred due to the rainfall intensity in Bengkulu City of Indonesia could inundate the downstream area of MuaraBangkahulu River, especially TanjungAgung Sub-District. In 2019, a huge flood had occurred in Bengkulu City and triggered the environmental effect to riverbank in TanjungAgung. This environmental effect is a massive slope failure on downstream riverbank in TanjungAgung. This study is therefore conducted to analyze the slope stability in the area during the normal and the critical conditions. A slope stability analysis using finite element method is performed. First, the maximum discharge of MuaraBangkahulu River is estimated. Furthermore, slope stability analyses are conducted by considering the normal condition and the increase of river water level due to the maximum discharge (the critical condition). Mapping of factor of safety for riverbank slope and soil deformation is conducted. The results showed that slope along downstream riverbank of MuaraBangkahulu could undergo slope failure under both normal and critical condition. The results also showed that the factor of safety decreases due to the increase of river water level. The results of this study could be used by local government to consider slope countermeasure in the study area
A floating photovoltaic system for fishery aeration
Authors: Pratama E G , Sunanda W , Gusa R F 
Published: December 2021

Abstract
Photovoltaic panel as a producer of renewable energy is increasingly being utilized. The electrical energy produced by photovoltaic panel can be used for aeration in fish ponds located quite isolated and far from the main electricity grid. Aeration is important for fishery because it affects the dissolved oxygen level in the water. The system uses two units of 50 Wp floating solar panels and four units of DC aerator of 12 Volt/0.28 A. The measurement of solar irradiance, solar panel temperature, output voltage and current was conducted to monitor floating solar panel performance. Dissolved oxygen level measured in the water without aeration was 3 - 3.9 mg/L while after using floating photovoltaic panels to supply the electrical energy for aerators, dissolved oxygen level in the water was increased to 4.1 - 4.8 mg/L.
Fabrication of supercapacitor electrode based on pepper peel activated carbon
Authors: Kurniawan W B , Kurniawan K , Ipi  
Published: December 2021

Abstract
Pepper peel waste is one of the byproducts of pepper production, especially in the Province of Bangka Belitung Islands. One of the efforts to utilize pepper peel, which is used as an activated carbon material that can be used as supercapacitor electrodes, has been carried out. Activated carbon based on pepper peel is synthesized by drying it to dry and then pre-carbonization. The next step is chemical activation using ZnCl2 and followed by physical activation at 700 °C in nitrogen flow conditions (N2) for 3 hours. Characterization of activated carbon material was carried out using SEM-EDX and BET, while the electrode performance used CV (Cyclic Voltamettry). The SEM-EDX and BET test results show that the activated carbon material has a porous structure with an average pore diameter of 2.059 nm. The CV test results were used to determine the energy storage capability with a specific capacitance value of 7.77 F/g at a scan rate of 1 mV/s.
Isolation and Identification Cellulolytic Bacteria from Termite Gut Obtained from Indralaya Peatland area
Authors: Oktiarni D , Hermansyah  , Hasanudin  , Miksusanti  , Nofyan E , Kasmiarti G 
Published: December 2021

Abstract
The production of second-generation bioethanol as renewable energy has developed very rapidly and has become a promising alternative energy source. Bioethanol production using biomass can be obtained alternatively from cellulose in wood, sawdust, organic waste, and agricultural waste. This research used termites obtained from Indralaya peatland area as organisms that can decompose cellulose into glucose with the cellulase enzymes produced by bacteria in their digestive tract. Cellulases are enzymes capable of hydrolyzing lignocellulose into glucose. The study aimed to isolate and identify of cellulolytic bacteria from termite gut obtained from Indralaya peatland area. The bacterial isolates were classified by using morphological and biochemical standard methods, and identification based on Bergey’s Manual of Determinative Bacteriology. Cellulolytic bacteria of termite gut were isolated and cultured on CMC (Carboxymethyl cellulose) agar medium. The activity of cellulolytic bacterial was conducted based on halo area and cellulolytic index on CMC agar medium. Among 64 isolates of bacteria, 24 isolates were identified as cellulolytic bacteria. Futhermore, our isolates with higher cellulolytic index were identified as the Staphylococcus, Microbacterium, Bacillus, and Brevibacterium genus.
Heavy metal distribution in sediments around the offshore tin mining area of Central Bangka Regency, Indonesia
Authors: Irvani  , Adibrata S , Yusuf M , Hudatwi M , Pamungkas A 
Published: December 2021

Abstract
Vary heavy metals scattered in suspension loads and re-sedimentation from the tailing of the offshore-alluvial tin mining at Tanah Merah and its surroundings, Central Bangka Regency. Research is needed to determine the type, composition, spatial distribution of heavy metals, and potential pollution. The active surface-sediments were taken from shallow marine systematically around the offshore tin mining area in the east season. Geochemical analysis of sediment using x-ray fluorescence, coupled with minerals and sieve analysis, and support by spatial analysis. These sediments have dominant the sand-size (range very-fine sand to coarse sand) and silt, contained predominantly large quantities of quartz minerals and shell fragments of marine animals. The metals are in the following decreasing order: Cr>Zn>Pb>Ni>Cu>As>Co>Cd. The spatial distribution of heavy metals generally has a relatively south, east, and north position, with concentrations occurring along the coastline and showing the degradation composition towards the open sea. The marine sediments are uncontaminated to moderately contaminated by Cd and Pb, indicate both natural and anthropogenic enrichment, low the pollution load index (PLI), and have various potential ecological risks index (RI) (low to very high RI).
Tradition lubuk larangan as a local wisdom for ecocultural tourism river management through landscape anthropolinguistic approach in Mandailingnese
Authors: Lubis T , Dardanila  , Nasution T , Zulkarnain  , Hasrul S , Ramlan  , Abus A F 
Published: December 2021

Abstract

Lubuk larangan is a pond that contains freshwater fishes in Kecamatan Tambangan, Kabupaten Mandailing Natal, North Sumatera. The objective of this study was to describe eco cultural tourism river management at the core of the landscape anthropolinguistic approach. The method was qualitative, and an interactive model was implemented. The data were collected by doing an interview and participant observation. Then they were analyzed data reduction, data display, and verifying/conclusion with landscape anthropolinguistic as an approach. This approach was the new paradigm to describe and explain the analysis from a linguistic perspective in landscape study. The study results showed that Lubuk larangan was a natural resource for the villagers economically and contained social, cultural ecology, and religious value. It became a tradition and belonged to Mandailingnese as their local wisdom. It can be concluded that Lubuk larangan became a concept for them to understand and apply management for maintaining environmental usage patterns with cultural-based tourism space.
Dynamic stability improvement with integrated power plant scheduling method based on moment of inertia
Authors: Fitriani  , Gunadin I C , Suyuti A , Siswanto A 
Published: December 2021

Abstract
Dynamic stability is one of the important aspects of maintaining the stability of an electrical power system as a whole. Dynamic stability study is the ability of the electric power system to return to the equilibrium point after a relatively small disturbance suddenly occurs for a long time. In this paper, we offer a method of rescheduling the generator to improve system stability by looking at the critical clearing time (CCT). Changes in the CCT value are due to changes in the load on each bus. The modelling of the IEEE 14 bus system is carried out with the help of the Simulink Power System Analysis Toolbox (PSAT) 2.1.10, which is integrated with the MATLAB R. 2016a program. The simulation results show that the CCT value decreases as the fault location gets closer to the main generator.
ARIMAX model for rainfall forecasting in Pangkalpinang, Indonesia
Authors: Amelia R , Dalimunthe D Y , Kustiawan E , Sulistiana I 
Published: December 2021

Abstract
In recent years, the weather and climate are unpredictable and the most visible is the rotation of the rainy season and the dry season. The extreme changes in rainfall can cause disasters and losses for the community. For that we need to predict the rainfall to anticipate the worst events. Rainfall is included in the periodic series data, so the forecasting method that can be used is the ARIMAX model which is ARIMA model expanded by adding the exogen variable. The aim of this research is to predict the rainfall data in Pangkalpinang City, Indonesia. The best model for each rainfall is ARIMAX (0,1,3) for monthly rainfall data and ARIMAX (0,1,2) for maximum daily rainfall. This research shows that there is an influence maximum wind speed variable to monthly rainfall and maximum daily rainfall in the Pangkalpinang City. Nevertheless, when viewed from the ARIMA and ARIMAX models based on the obtained AIC value, the ARIMAX value is still better than ARIMA. However, the prediction value using ARIMAX needs to increase again to take into account seasonal data rainfall. Then, possible to add other exogeneous factors besides maximum wind speed.