bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of Soil Nutrient (NPK) Test Value – Relative yield Relationship for Harumanis Mango using Modification Arcsine-Log Calibration Curve.
Authors: Tan Erdy Sulino Mohd Muslim , Markom Marni Azira Binti , Andrew Allan Melvin , Abdullah Abu Hassan , Rahim Norasmadi Abdul , Saad Fathinul Syahir Ahmad , Nordin Imaduddin Helmi Wan , Abidin Mohd Amri Zainol , Jamil Syahrull Hi-Fi Syam Ahmad , Yogesh CK 
Published: November 2023

Abstract
The cultivation of Harumanis mango (Mangifera indica) is of significant agricultural importance, especially in tropical regions like Malaysia, where it is renowned for its exceptional taste and quality. Maximizing mango yield and maintaining fruit quality are vital aspects of successful cultivation, relying on optimal soil nutrient management, particularly nitrogen (N), phosphorus (P), and potassium (K). In this research, the soil nutrient test value – relative yield relationship for Harumanis mango is investigated using a modification arcsine-log calibration curve. Traditional linear calibration curves may not fully capture the nonlinearities observed in crop responses, potentially leading to inaccurate nutrient requirements for optimal yield. By employing the innovative modification arcsine-log calibration curve, a more precise and robust relationship between soil nutrient test values and relative mango yield is established. Soil samples are collected from mango orchards, and NPK levels are measured using standardized laboratory techniques, alongside corresponding relative mango yields. This study advances precision agriculture by offering precise soil nutrient recommendations for mango farmers. Utilizing calibrated curves improves mango yield, minimizes nutrient waste, and encourages sustainable farming. In conclusion, the modified arcsine-log calibration curve reveals vital insights for optimal Harumanis mango production, benefiting the industry and sustainability.
Classification-based Method for Wall Crack Detection System
Authors: Ramli N A M , Rahiman M H F , Krishnan K K 
Published: November 2023

Abstract
It is imperative to ensure that building inspectors have adequate resources and tools to conduct their inspections efficiently and effectively. Relying solely on manual labour to check for wall cracks is inconvenient and may prove inefficient and poor use of time and financial recourses. Besides, there are concerns regarding the need for skilled inspectors due to their limited accessibility and the subjective nature of their evaluations. Previously, image processing and artificial intelligence have been independently utilized to identify wall cracks and estimate their width. However, more can be done when integrating these two approaches to produce a comprehensive solution. This study presented a technique to indicate wall cracks utilizing a pre-trained Convolutional Neural Network (CNN) model called Squeezenet. Then, the following image processing can precisely estimate the width of the cracks in pixels. Based on the total models studied, 78% were successfully detected and classified into their respective crack groups. Although 22% of the remaining models were mistakenly classified, the system still managed to detect the presence of cracks in them accurately. This study only considers analyzing projected cracks categorized as minor, moderate and major. Nevertheless, the discussion does not address the translation of pixel approximations into their respective physical measurements.
Comparative Evaluation of Three-Phase Inverter Topologies Based on Voltage Boosting Features
Authors: Yee Chong Sin , Azmi Syahrul Ashikin , Hwai Leong Jenn , Tajuddin Mohammad Faridun Naim , Zahari Muhammad Zarul Aswad , Rahim Siti Rafidah Abdul 
Published: November 2023

Abstract
Voltage source inverter (VSI) is commonly used in industrial due to its stable operation and low cost. However, VSI needs to operate with an extra converter stage which is a DC-DC converter for voltage boosting purposes. In contrast, current source inverter (CSI) inherits voltage boosting features may become an alternative option to VSI. Yet, there were minimal research on CSI that dedicates to the voltage boosting features. This research focuses on comparing the voltage boosting features of CSI and VSI in both open-loop and closed-loop conditions. The performance of VSI and CSI are simulated using MATLAB/Simulink. Under open-loop operation, CSI produces a voltage boosting capability at approximately 55% higher than VSI. Yet, CSI suffers high THD percentage as compared to VSI for the same switching frequency. This high THD shortcoming can be easily resolved by using a simple CL filter. For closed-loop operation, VSI and CSI with voltage-controlled synchronous frame PI control systems are proven to have good reference tracking and harmonic rejection and are suitable to be implemented for household applications or for a standalone system. Interestingly, CSI closed-loop system can achieve a wider range of output due to the voltage boosting capability and provide a better quality of output waveform as compared to VSI.
First genetic record and phylogenetic relationship of Rasbora einthovenii (Bleeker, 1851) (Cyprinidae : Danioninae) from Bangka Island, Indonesia
Authors: Syarif AF , Kurniawan A , Kurniawan A , Robin R , Valen FS 
Published: November 2023

Abstract
Brilliant Rasbora (Rasbora einthoveni) called “Seluang” is the one of local fish in Bangka Island. This fish widely distributes from Malaysia Peninsular, Sumatera (North Sumatera-Lampung Province), Kalimantan and the record of morphological character is until Sri Lanka, Laos to Thailand. The genetic status of this fish was unrecorded from Bangka Island. This research aimed to record the genetic status of Rasbora einthovenii compared with the same species in another region using cytochrome oxidase c subunit one (COI) gene. Analysis of maximum likelihood phylogenetic reconstruction of the Kimura 2-parameter model, which is implemented in MEGA 10 with 1000 replicates bootstrapping data sets. The result showed that phylogenetic tree of Rasbora einthovenii from Bangka Island is related closely with the sample from Selangor, Malaysia, and Aquarium Retailers in UK with the genetic distance about 0% means very similar. The samples from Pahang, Malaysia showed the genetic distance is about 3% and samples from Jambi, Indonesia is about 6%. It means that the genetic profile of Rasbora einthovenii from Bangka Belitung Island are the same species as well as from Selangor, Malaysia also the samples from Aquarium Retailers in UK.
Nutritional content and growth ability of aquatic plant Azolla pinnata on wastewater of catfish
Authors: Said D S , Chrismadha T , Mardiati Y , Mayasari N 
Published: November 2023

Abstract

Azolla pinnata is a floating aquatic plant with several benefits as a source of feed in aquaculture and animal as well as a phytoremediator. Research with two replications was carried out at RC for Limnology and Water Resources laboratory on May 2022 to explore information on its nutritional content, growth ability and function as a phytoremediator. The growth ability research was carried out in-door using media of catfish cultivation wastewater varied in concentration (100%, 60%, and 30%), and the observation period of 3 days for 15 days. Azolla pinnata contains nutrition (% dry weight): ash: 31.20; fat: 12.37; protein: 27.16; fibre: 11.15; and Nitrogen Free Extract: 18.12, respectively. There were 15 types of amino acids, as much as 1.59 % w/w. On the 15th day, the highest growth was seen in the media with 100% concentration, where the culture density was 310.47 g/m2, specific growth rate (SGR) was 15.38%, and productivity was 35.93 g/m2/day. At the same media, Total Phosphate (TP) elimination rates were 46.06%, and Total Nitrogen (TN) was 79.474%. Azolla pinnata can be cultivated in catfish wastewater to provide nutritious feed as well as to reduce the content of TP and TN.
The morphological spicules of Acaudina sp. (sea cucumber) from Delta Wulan waters, Demak, Central of Java, Indonesia
Authors: Widianingsih W , Hartati R , Sibero M T 
Published: November 2023

Abstract
This research aims to study the morphological spicules of sea cucumber Acaudina sp. This species is belong to Class Holothuroidea, Order Molpadida, and Family Caudinidae. Samples Acaudina sp. were taken randomly from Delta Wulan Waters, Demak Regency, Central of Java. The sample was preserved by alcohol 70%. NaOCl solution was used for bleaching the samples. According to the result research, most of body part (anterior, posterior, dorsal and ventral) have rod shape, irregular rod shape, straight rod shape, and dumbbell curved.
Utilization of clam shell waste through circular economy activity in Tangerang Regency coastal area
Authors: Bahtiar R , Raswatie F D , Afriana W 
Published: November 2023

AbstractTangerang Regency is a coastal district with a substantive potential for marine resources, particularly in Ketapang Village, Mauk District, Tangerang Regency. Significant quantities of fish, shrimp, and shellfish are produced. About 86% of the population makes a living as fishermen. As producers of shellfish, there are several entrepreneurs with daily boiling capacity ranging from 0.5 to 1 ton. Although this business has economic potential, it has a negative influence on the coastal environment. Consequently, circular economy activities are required to address these issues. This study aims to analyze the potential of clam shell waste, the potential alternative for circular economy activity to deal with clam shell waste, and the added value of clam shell waste management. The results indicate that the six shellfish stripping units have the capacity to generate 4.1 tons of clam waste each day. As an alternative, the mollusc shell can be processed commercially into animal feed . Clam shell flour has a potential selling price of Rp. 11,930 per kilogram depending on its Cost of Goods Manufactured (COGM). Optimal management of discarded clam shells can prevent negative environmental impact and give economic value to the community.
Plastics debris characteristics in Cikapundung River
Authors: Taryono  , Hariyadi S , Wulandari D Y , Permatasari P A , Zulmi R , Amalo L F , Trissanti V N , Nur I A , Braaten H F V , Hurley R , Olsen M 
Published: November 2023

Abstract
River plays the important role for transporting plastics from land to the ocean. Cikapundung river is one of tributary rivers which contributes significantly to Citarum River. The Cikapundung river transports the riverine plastic debris from the area of Bandung City and Bandung District to Citarum River that finally flows to the North Java Sea through its estuary at Muara Gembong-Bekasi. The aim of the study is to monitor plastic debris characteristic of in Cikapundung. It is important to understand the characteristic of plastic debris from the settlement area which potentially contaminates the sea. Monitoring was conducted in April to June 2021 by using net sampler 2x1x3 meters. The sampler was set at two transversal sites across the river in 15-30 minutes each. The observations were conducted three times (morning, noon, and afternoon) of each sampling day. Collected plastics were estimated the weight and the volume, and were separated, enumerated and classified afterwards. The top three common plastic types both in weight and number founded in Cikapundung river including plastic bags, clear plastic bags and sachet. The majority of commonly encountered plastics were clear plastic bags, plastic with aluminum, sachets (plastic packing), plastic bags, and plastic cups. It reflects the dominance of domestic source wastes rather than industrial plastic debris.
Hydrological characteristics of Mahakam cascade lake as a reference for the sustainability management
Authors: Fakhrudin M , Turmudi  , Setiawan F , Apip  , Mislan  
Published: November 2023

Abstract
Mahakam cascade lakes consist of Lake Semayang, Melintang, and Jempang is a floodplain lake. Mahakam cascade lakes include the 15 national priority lakes which are the most urgent situation. This lake is characterized by dynamic water level fluctuation, resulting in high fishery productivity. The lake’s hydrological characteristic is the main component in controlling the lake ecosystem, therefore it is crucial to evaluate the influenced factors. The objective of this research is to describe the lake’s hydrological characteristics, including inlet-outlet discharge, sedimentation, water level pattern, and land cover change in the catchment area. Further, provide a reference for the conservation of lake ecosystems. We performed a field campaign to measure river discharge and collect water samples for sediment-load laboratory analysis. We analyzed daily water level data recorded from 1989 to 2010. We obtained the time series land cover from Landsat data and performed GIS spatial analysis. Our results revealed that first, the Rebak Rinding River has the biggest contribution to lake sedimentation (3,859 tons/day, 77% of the total sediments entering the lake). Second, the water level tended to increase during the medium and extreme flood seasons. Contrary, a relatively small decrease in the water level during the medium-receding season. Third, the catchment area is 51,573 km2 (66 times larger than the lake water bodies). From 2000 to 2019, the forest decreased by 2,063 km2. As a consequence, increased erosion-sensitive area by 2,695 km2. We emphasized preserving the catchment area is vital to reduce the sedimentation rate and water fluctuation. We recommend the Rebak Rinding sub-catchment as the priority area for controlling deforestation, and erosion on the plantation, mining, and agricultural area.
Morphometric Study of Swimming Crab (Portunus pelagicus) Using Truss Network Analysis for Determination of Stock Structure in FMA 711
Authors: Zairion Z , Putri D A , Butet N A , Wardiatno Y , Hakim A A 
Published: November 2023

Abstract
The crab of Portunus pelagicus is a fishery resource with a wide distribution area and quite diverse environmental conditions in Indonesia, giving rise to morphometric diversity. The study aims to analyze differences in morphometric diversity of crab populations (P. pelagicus) in the waters of Indonesian Fisheries Management Area (FMA) 711, landed in Bintan, Bangka, and Ketapang, which can describe the condition of the crab stock units. A total of 300 individuals were collected from all locations using random sampling. The crab morphometric characters were analyzed using Truss Network body shape method (TNA). The Kruskal Wallis results analysis showed distinguishing in some morphometric characters for both carapace and abdomen. Cluster analysis shows that there were two population groups: The Bintan group, and the Bangka-Ketapang groups. The discriminant analysis on the carapace characters resulting that the crabs from three locations have the potential for more than one stock unit, so different management is needed.
Choosing the appropriate Coordinated Regional Downscaling Experiments South East Asia (CORDEX-SEA) Model for drought future hazard assessment in the Bintan Island
Authors: Narulita I , Sutjiningsih D , Kusratmoko E , Moersidik S S , Djuwansah M R , Fadjary F R 
Published: November 2023

Abstract
Management for sustainable water resources requires attention to future climate variability to anticipate the hazards that may arise, such as drought and flood. CORDEX-SEA is a downscale result of several gridded climate models that provide historical data and future projections for the Southeast Asia region useful to predict future climate, including the extreme event’s potential for deriving hazards. This research was done to determine which CORDEX-SEA climate model would be most suitable for predicting future drought risks, especially for small islands. This study uses statistical tests (probability density functions, skewness, etc.) in the historical period to determine the climate model that best fits the observed data, using Bintan Island as the case area. The model with historical data that best fits the observations will be considered the best model for predicting future (drought and flood) conditions. The corrected MPI and ensemble model of CORDEX-SEA showed well results in representing the drought index.
Antioxidant and antimicrobial screening of an unidentified yellow pigmented marine-derived fungus
Authors: Octaverina V , Sibero M T , Subagiyo S , Yulianto B , Wijayanti D P , Frederick E H 
Published: November 2023

AbstractThe exploration of fungal secondary metabolites has increased significantly since the first discovery of penicillin. In addition, pigment derived from marine fungi attracts plenty of attention due to its complex and unusual chemical structures, which have tremendous antioxidants and antimicrobial activities. Hence, our current work aimed to characterize the crude pigment extract of an unidentified fungus SUCCF0001 and its potential as an antioxidant and antimicrobial agent. The fungus was cultivated on two semi-solid media namely MEA and PDA for 14 days at 25 °C, and two different liquids media namely MEB and PDB for 14 days at 25 °C with agitation at 150 r.p.m. The semi-solid medium and the fungal mycelium from the broth culture were extracted with methanol, while the liquid medium using ethyl acetate. The crude extracts were characterized using TLC plates and then visualized using DPPH, vanillin-H2SO4, and FeCL3. The presence of carotenoid pigment was detected using TLC with β-carotene as a marker. Antioxidant bioassay was screened using the DPPH method; while antimicrobial activity bioassay was conducted using the paper disc method againstBacillus subtilis, Escherichia coli, Micrococcus luteus, Pseudomonas aeruginosaandCandida tropicalis. The results showed that only the PDB extract had radical scavenging activity (RSA) > 50% for antioxidant activity. On the other hand, antimicrobial bioassay showed that only MEB extract had antimicrobial activity againstB. subtilis. TLC analysis indicated the presence of antioxidants, terpenoids and phenols in both PDB and MEB extract. However, the result of fungal pigment characterization using TLC concluded that the pigment was not a β-carotene.
Characteristics of analog coffee from the mangrove fruit Rhizophora mucronata origin Sangihe Islands
Authors: Mandeno J A , Tanod W A , Cahyono E , Ansar N M S , Pumpente O I , Rieuwpassa F J , Rawung L D , Riyadi P H 
Published: November 2023

Abstract
Coffee is a popular drink today. One of the coastal resources that can be processed into coffee-like products (analog coffee) is the mangrove fruits Rhizophora mucronata. The fruits of R. mucronata were reported to contain antioxidant substances that can support human health. This study aimed to characterize analog coffee products from the fruit of R. mucronata. The fruits were collected from Miulu village, Sangihe Islands, North Sulawesi. Mangrove fruits were soaked in a 2% lime solution for 72 hours and dried at 60 °C. Then it was roasted at 116-118 °C for 40 minutes, and the sample was ground until it resembled coffee grounds. The findings revealed that the water content of analog coffee was 4.14 ± 0.14%; ash 4.97 ± 0.02%; protein 14.38 ± 0.02%; fat 12.26 ± 0.08%; carbohydrate 63.67 ± 0.09%, energy 422.58 ± 1.01 kcal, caffeine 1.20 ± 0.00%, tannins 808.21 ± 2.02 mg/kg, and antioxidant capacity IC50 131.28 ± 0.44 μg/mL. Furthermore, the analysis of compounds using GC-MS from the coffee analog of R. mucronata fruits was dominated by cis-9-Hexadecenal (50.95%) and 9-Octadecenal, (Z)-(33.97%). These research findings provide that analog coffee from the R. mucronata fruits has the potential to become a coffee-like product as a functional drink.
Sexual dimorphism and female advantage hypothesis in the gynomonoecious-gynodioecious Dianthus plumarius (Caryophyllaceae)
Authors: Gavini Sabrina S 
Published: November 2023

Abstract
To explain the co-existence and maintenance of females along with hermaphrodite plants, the female advantage hypothesis has been proposed where females should show greater fecundity compared to their conspecific hermaphrodites. On the other hand, greater attraction would be selected in the hermaphrodites to increase their male function, potentially leading to larger showier flowers, with more rewards. Here, I tested the sexual dimorphism trade-off hypothesis with the gynomonoecious-gynodioecious Dianthus plumarius (Caryophyllaceae), in the gardens of Bariloche (Patagonia, Argentina). I measured in female and hermaphrodite plants: flower size, nectar volume and concentration, flower lifespan, ovule production, seed number, seed set and seed weight. Additionally, bagging and pollen supplementation experiments were carried out to evaluate pollen limitation, probability of apomixis, if spontaneous autogamy is possible, and to examine the importance of pollen origin. I found that hermaphrodite flowers are more attractive, with larger-sized flowers and higher nectar volume, whereas female flowers compensate with longer lifespan of stigmatic receptivity and more concentrated nectar. Despite ovule number was lower in female flowers, these showed higher seed set and produced more and heavier seeds than hermaphrodites under open pollination. No evidence of apomixis was found in females, but spontaneous autogamy may occur in hermaphrodites. Hand-pollination experiments showed first that both flower types suffered pollen limitation, but it was higher on hermaphrodite flowers. Finally, despite self-compatibility, pollen origin is important because hand self-pollination decreases seed weight. These findings provide strong evidence in support of the mechanisms and underlying conditions that would allow the co-existence and maintenance of female and hermaphrodite individuals within populations.
Sense of own body shapes neural processes of memory encoding and reinstatement
Authors: Iriye Heather , Chancel Marie , Ehrsson Henrik H 
Published: November 2023

Abstract
How is the fundamental sense of one’s body, a basic aspect of selfhood, incorporated into memories for events? Disrupting bodily self-awareness during encoding impairs functioning of the left posterior hippocampus during retrieval, which implies weakened encoding. However, how changes in bodily self-awareness influence neural encoding is unknown. We investigated how the sense of body ownership, a core aspect of the bodily self, impacts encoding in the left posterior hippocampus and additional core memory regions including the angular gyrus. Furthermore, we assessed the degree to which memories are reinstated according to body ownership during encoding and vividness during retrieval as a measure of memory strength. We immersed participants in naturalistic scenes where events unfolded while we manipulated feelings of body ownership with a full-body-illusion during functional magnetic resonance imaging scanning. One week later, participants retrieved memories for the videos during functional magnetic resonance imaging scanning. A whole brain analysis revealed that patterns of activity in regions including the right hippocampus and angular gyrus distinguished between events encoded with strong versus weak body ownership. A planned region-of-interest analysis showed that patterns of activity in the left posterior hippocampus specifically could predict body ownership during memory encoding. Using the wider network of regions sensitive to body ownership during encoding and the left posterior hippocampus as separate regions-of-interest, we observed that patterns of activity present at encoding were reinstated more during the retrieval of events encoded with strong body ownership and high memory vividness. Our results demonstrate how the sense of physical self is bound within an event during encoding, which facilitates reactivation of a memory trace during retrieval.