bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of addition of fermented restaurant waste meal in artificial feed on the growth of nile tilapia (Oreochromis niloticus)
Authors: Andriani Y , Wiyatna M F , Lili W , Zidni I , Sandra M A 
Published: March 2021

Abstract
This research aims to determine the optimal probiotic concentration and to analyze the effect of addition of fermented restaurant waste meal (FRWM) in feed to growth of nile tilapia. The research was carried out from February-June 2019 at Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. This research used experimental method with a Completely Randomized Design (CRD) consisting of five treatments and three replications. The treatments given consisted of addition of 0, 10, 20, 30 and 40% of FRWM in feed. The parameters observed included changes in the nutritional value of restaurant waste, daily growth rate, survival, feed conversion ratio, and water quality. Data were analyzed using analysis of variance. and was further analyzed using Duncan’s multiple range test 5%. The results showed that the addition of 8% probiotic concentration was able to provide the best change in the nutritional quality of restaurant waste by increasing feed protein by 50.83% and decreasing crude fiber by 30.74%. The use of 30% fermented restaurant waste meal in feed gave the highest daily growth rate of 1.57% and the best feed conversion ratio of 0.57 with a survival rate ranging from 75-90%.
Geographic information system application in small islands management (case study: assessment of jetty suitability distribution in Derawan Island)
Authors: Purbani D , Daulat A , Ramdhan M , Kusuma L P A S C 
Published: March 2021

Abstract
Derawan Island, with an area of 35.99 hectares, is a small island in Derawan Archipelago, located in Berau Regency, East Kalimantan Province. The waters in the Derawan archipelago rich in biodiversities such as coral reefs, mangroves, and seagrasses, so designated as a conservation area in 2016 and currently known as marine tourism destinations in Kalimantan, which contribute to the economy. Tourism in the Derawan islands increased significantly along with supporting infrastructures such as hotels, restaurants, and jetties. A study on jetty facilities conducted by comparing the changes of jetties infrastructure in Derawan island, wherein 2003, the jetties area was 6,977 m2, while in 2018, about 66,011 m2. Changes of jetties area mostly occurred in the western and southern parts of the island due to safety reasons, bathymetry, and hydrodynamic conditions. This condition raised an issue concerning water quality, aesthetics, and natural condition, decreasing its beauty and impact on the tourism sector. Spatial analysis for jetty distribution using GIS carried out and resulted in recommendations where the maximum number of jetties needed was five units with a length of about 70 m towards the sea. This recommendation may also be used to provide an alternative location for a jetty in Derawan Island in the future.
Morphometric analysis of three species gourami group (Osphronemidae) from Aceh waters, Indonesia
Authors: Perdana A W , Batubara A S , Nur F M , Syahril A , Muchlisin Z A 
Published: March 2021

Abstract
The objective of the present study was to analyze the morphometric character of the three species within Gourami group, namely Trichopsis vittata, Trichopodus pectoralis and Trichopodus trichopterus. The T. vittata samples were collected from Aceh Tamiang District, the T. pectoralis were collected from Aceh Besar District, and the T. trichopterus were collected from Aceh Jaya District, Indonesia. A total 150 individual of fish samples (50 individual of every species) were measured for traditional morphometric characters. The results of univariate (ANOVA) analysis showed that all morphometric characters measured in three fish species were significantly different (P <0.05). Multivariate (Discriminant function analysis, DFA) analysis showed that T. pectoralis and T. trichopterus have more similar morphological characteristics, whereas T. vittata was discriminated distinctly. These results confirm that the level of relationship between T. trichopterus and T. pectoralis is closer than T. vittata.
Population dynamics of skipjack tuna (Katsuwonus pelamis) in the northern and western waters of Aceh
Authors: Damora A , Fazilla F , Perdana A W , Rahmah A , Aprilla R M , Salmarika S 
Published: March 2021

AbstractSkipjack tuna (Katsuwonus pelamis) is a pelagic fish species that have important economic value in the northern and western waters of Aceh. Skipjack tuna is one of the dominant catch fish landed at the Fishing Port of Kutaraja, Banda Aceh. The dynamics population of skipjack tuna in the northern and western waters of Aceh need to be done to get information on the status of skipjack tuna in ocean. This research aims to determine the dynamic parameters of the population of skipjack tuna based on the growth parameters, length and weight relationship, length distribution, length at the first capture, mortality, and exploitation rate. The data collection was conducted in February to March 2020, located at the Fishing Port of Kutaraja, Lampulo, Banda Aceh. A total of 166 sample, were measured with stratified random sampling method. The FAO-ICLARM Stock Assessment Tools (FiSAT) program was used by analyze growth parameter, mortality parameters, and exploitation rate. The results showed that has a negative allometric growth pattern, with a length of fork length (FL) ranging from 25-51 cm. The length of first capture was 38,2 cm. The asymptotic length (L∞) of skipjack tuna was 84,78 cm with K value of 0.22/year and. The estimated natural mortality (M), fishing mortality (F), and total mortality (Z) were 0,5/year, 1.55/year, and 2.99/year respectively. The exploitation rate (E) of skipjack tuna was 0.83/year that indicated skipjack tuna in the Northern and Western waters of Aceh over-exploited.
Physical and chemical characteristics of soil in mangrove ecosystem based on differences habitat in Banda Aceh and Aceh Besar
Authors: Dewiyanti I , Darmawi D , Muchlisin Z A , Helmi T Z , Imelda I , Defira C N 
Published: March 2021

Abstract
Mangrove is a plant type influenced by tides action along the tropical coastlines. The tidal type will affect the soil properties, growth of soil microorganisms, and mangrove distribution. The purposes of the study were to analyzing the characteristics of mangrove soil in different habitat type including physical and chemical properties. The research was conducted in mangrove rehabilitation as site 1 and non-rehabilitation as site 2. This research was conducted from April 2020 to September 2020. Analysis of soil properties were consisted of substrate texture, pH, salinity, Organic Carbon, N-total, and P-available. These analyses carried out in Soil Laboratory, Faculty of Agriculture, Universitas Syiah Kuala. The determining of sampling location was done by using random stratified sampling method. Data were collected at 6 stations divided into 3 stations each site. The criteria for each station was based on tidal inundation. Each station was sampled randomly at three depths, namely 0-15 cm (top layer), 15-30 (sub layer) cm, and 30-45 cm (bottom). Soil textures in study areas were loamy sand, sandy loam, dusty loam, and clay in site 1, while in site 2 the soil textures were sandy loam, sandy clay loam, loamy sand, and dusty loam. The high sand and low clay percentage produce the average of organic carbon in the medium, low and very low categories, the organic carbon ranged from 0.25% to 2.18% in site 1 and 0.62% to 1.73% in site 2. The N and P content in site 1 and site 2 were ranged from 0.02% to 0.13%; 25.30% to 68.15% and from 0.04% to 0.11%; 2.60% to 37.85%, respectively. The pH average of mangrove soils indicated that the pH category was neutral, slightly alkaline, slightly acidic in site 1. In site 2 the pH categories were slighly alkaline, neutral, slightly acidic, and acidic. The soil salinity values at different sites indicated high and very high salinity.
Fucoxanthin: a marine carotenoid has anticancer activities and apoptosis-inducing effect (a review)
Authors: Noviendri D , Hasrini R F , Taher M 
Published: March 2021

Abstract
Fucoxanthin, a natural xanthophyll carotenoid, is generally found in brown seaweeds, such as Sargassum duplicatum, Turbinaria turbinata, Padina australis, Undaria pinnatifida, and Laminaria japonica; and microalga or diatom such as Phaeodactylum tricornutum, Isochrysis galbana and Odontella sinensis. Fucoxanthin is a marine xanthophyll exhibiting several anticancer activities, such as anticancer activities against leukemia, prostate, cervical, hepatoma, colon, and lung cancer. Cancer disease is frequently considered to be a disease of the cell cycle. Then, apoptosis is a dominant form of cell death with particular relevance to cancer, characterized initially by a series of stereotypic morphological changes, such as condensation and fragmentation of chromatin shrinking of cytoplasmic (cell shrinkage), a decrease in cell volume and alterations to the plasma membrane, mitochondrial depolarization, membrane blebbing, and cell packaging into apoptotic bodies or formation of apoptotic bodies. In general, there are four techniques for the detection of apoptosis, namely: (1). morphological changes analysis using an inverted microscope, scanning electron microscope, fluorescent microscope, (2) gel electrophoresis, (3). immunohistochemistry (e.g., analysis of caspase-3), and (4) flow cytometry.
Campaign “BOTAK” (bogor without plastic bags) as an environmental communication model for reducing plastic waste in marine environment
Authors: Mihardja E J , Komsiah S , Harmaningsih D 
Published: March 2021

AbstractPlastic waste is one of the environmental problems facing Indonesia, which is called a plastic waste emergency country. Plastic waste has the potential to damage the ecosystem of living creatures in the sea and has a major impact on human life. Thus, special efforts are needed to reduce the dangers of plastic waste, including by switching to environmentally friendly shopping bags is one form of environmental innovation (eco-innovation) which aims to save the environment from plastic waste. This study aims to determine strategies to reduce the use of plastic bags carried out by the Bogor city government. This research is qualitative using the case study method. Data were collected through interviews, document analysis, literature study, and observation. The results show that the campaign carried out by the government needs to be supported by a more comprehensive approach by raising public awareness of the dangers of plastic waste from upstream to downstream so that a plastic bag dumped in a river in Bogor might end up killing whales at sea.
The Substitution of soybean meal by fermented tofu dregs in the milkfish (Chanos chanos) diet
Authors: Putra D F , Muhsinah M , Arisa I I 
Published: March 2021

AbstractThis study aims to investigate the effect of fermented tofu dregs as feed raw material to substitute soybean flour in the milkfish (Chanos chanos) formulated feed. The research was conducted from April to May 2019 at the Ujung Batee Brackish Water Aquaculture Center, Mesjid Raya District, Aceh Besar Indonesia. A total of 200 milkfish (Chanos chanos) fry from 1-2 cm total length were randomly put in a volume of 25 liters per container. Fish were fed at 3 % body weight daily to apparent satiation twice a day (9:00 and 16:00) for 40 days. A completely randomized design (CRD) with 5 treatments and 4 replications was used with different fermented dregs tofu substitution rate ie, 0% (A), 5% (B), 10% (C), 15% (D) and 20% (E). ANOVA test results showed that the substitution of soybean flour with different doses of fermented dregs flour showed significant different (P<0.05) in absolute weight gain, daily growth rate, specific growth rate, feed conversion rate and feed utilization rate. However there was no significant difference (P>0.05) in the survival rate of the fish in all the treatments. It is concluded that the recommended concentration of fermented dregs tofu added into milkfish (Chanos chanos) diet was 10%.
Identification of microplastic waste in sea water, sediment in the sea waters of Dumai City, Riau Province
Authors: Yoswaty D , Feliatra  , Amin B , Nursyirwani  , Mardalisa  , Zientika  , Fatwa E B , Pakpahan D 
Published: March 2021

Abstract
This study aims to determine the types of microplastics in the waters of Dumai City. The method used in this research is a survey method, namely by direct observation in the field and data analysis in the laboratory. Based on research from seawater and sediment taken from seawater in Dumai City, it was found three types of microplastics, referred to as Fiber, Fragment and Filament, whose abundance was significantly different. The average abundance of microplastics in seawater is 0.130-0.200 particles / L particles / L; The sediment was 193.33-746.67 particles/Kg.
A Conceptual Framework on Technology Integration in English Writing Flipped Classroom
Authors: Sharom K. , Kew S.N. 
Published: March 2021

Abstract
As the education world revolves to Education 4.0, flipped classroom is seen to be one of the learning approaches that best described the future learning. Flipped classroom ticks every pillar for Internet of Things which are things, people, process and data. In flipped classroom, the things are the devices that the students use, such as computer, tablet or smartphone. The people that are involved in flipped classroom are teachers and students. The process that happened is teaching and learning. The data is transmitted through educational platform such as Google Classroom and Microsoft Teams. Flipped classroom transforms the conventional classroom by flipping the theoretical part to be done before the class and making the class to be student-centered and focusing to the practicality part of the lesson. Nonetheless, the research on flipped classroom is still limited in Malaysia, especially the primary school English language students. Hence, this paper aims to fill in this research gap by designing a conceptual framework for flipped classroom in teaching English writing to cater primary students with aims to improve students’ writing performance and motivation. The correlation between students’ writing performance and motivation will be observed too. In this respect, the proposed framework is integrated with technology based on Internet of Things, 21st century learning, social constructivist theory, Bloom’s revised taxonomy and motivational model. By using this conceptual framework, a set of teaching module is developed and to be implemented in English writing class for primary school students. This research also aims to use a mixed-method research design with three different instruments; writing test, questionnaire and interview to test its effectiveness, as it is believed that the implementation of flipped classroom can improve students’ English writing performance and their motivation. 64 students will be the participants of this study and they will be divided into two groups, control group and experimental group. Control group will go through conventional English writing class while experimental group will experience flipped classroom. The findings of this study will be beneficial for ESL teachers, ESL primary students and Ministry of Education.
Critical Thinking Analysis Using Functional Near-Infrared Spectroscopy (fNIRS)
Authors: Syazwani Dollah N , M Kamal M.A 
Published: March 2021

Abstract
Critical thinking which is also known as creative thinking, is a fundamental skill needed to solve any problems in our life. The behaviour of critical thinking involves reviewing the results of the application of decisions made and implementing change where possible. It also happens when someone aims to achieve the best possible outcomes in any situation. It plays an important role in innovation, development, and health. Hence, knowing someone’s critical thinking behaviour is essential to improve one’s ability. However, to have good critical thinking skill is very challenging without understanding its features and biological behaviour. To understand the critical thinking behaviour based on cognitive function and neural activities, the psychological research methods and principles from neuroscience are necessary. Thus, this study aims to analyse critical thinking behaviour in the human brain by looking on the Hemodynamic Response Function (HRF). The instrument used in this study is a functional Near-Infrared Spectroscopy (fNIRS) device, called Wearable Optical Topography (WOT-100) with 16 channels where it measured the HRF of oxy-hemoglobin (HbO) and deoxy-hemoglobin (HbR) concentration and Platform Optical Topographic Analysis Tools (POTATo) developed by HITACHI performed the pre-processing of raw data. Experimental results show that the mean concentration of HbO measured for High Scores (HS) group at right and left PFC were slightly difference with concentration value of 17.6945mol/μm and 17.3514mol/μm while for Low Scores (LS) group shows the mean concentration of HbO at left PFC was higher than right PFC with concentration value of 25.0353mol/μm and 14.2499mol/µm respectively. Hence, these results show that the LS group tend to use their left PFC during task given due to laborious decision-making process happen influences by time duration subjects answering the tasks. Therefore, these results suggest an imperative role for individual differences in their neural activation. The outcome of this study highlights the significance of individual differences and their cognitive preference and potentials in performance of functional tasks such as attention, creativity, imagery, decision making and working memory that leads to critical thinking behaviour.
The effect of pore geometry on the mechanical properties of 3D-printed bone scaffold due to compressive loading
Authors: Jahir-Hussain M J , Maaruf N A , Esa N E F , Jusoh N 
Published: March 2021

Abstract
Bone substitutes are derived from biological products or synthetic bone substitutes such as ceramics, polymers, metals, and organic or non-organic bone substitutes. Emerging three-dimensional (3D)-printing technologies are enabling the fabrication of bone scaffold with the precise specifications. 3D-printing allows controlled material placement for configuring porous tissue scaffolds with tailored properties such as mechanical stiffness, nutrient transport, and biological growth. Therefore, bone scaffolds with good biological and mechanical properties are needed to be used as a bone substitute in bone tissue engineering. However, inadequate mechanical strength is the major problem in current bone scaffolds fabrication. Therefore, the aim of this study is to design and to simulate the mechanical properties of 3D printed polylactic acid (PLA) bone scaffold with different pore geometries, which are circular, square, hexagonal and triangular. The scaffolds were designed and were simulated by using SolidWorks in determining the mechanical properties. Finite Element Analysis (FEA) of the PLA bone scaffold indicates that scaffolds with hexagonal pore shape has compressive strength of 241.0 MPa, which is matches with the human bone properties.
Automativ assessment of systolic cardiac performance using PEP/LVET index
Authors: Mohamed Sameh A , Abbas M A , Hazem M , Abd Elazeem M H 
Published: March 2021

Abstract
Congestive cardiac failure is one of the deadliest diseases in the world, with more than 26 million patients. Echocardiogram and angiography consider as the gold standards for heart failure diagnosis. Nevertheless, they are not commonly used for long-term follow up as they need highly skilled and experienced operator. In this paper, a simple and low-cost system for automatic assessment of systolic cardiac performance using systolic cardiac intervals is presented. The proposed system utilized electrocardiogram (ECG) and phonocardiogram (PCG) to calculate pre-ejection period (PEP) and left ventricle ejection time (LVET). The ratio between PEP and LVET was computed to assess the performance of the systolic cardiac function. ECG and PCG were acquired using a commercial stethoscope which was modified to convert PCG auscultation to electrical signals. ECG and PCG signals were digitized and transferred to a personal computer. A custom MATLAB application was designed to display the acquired ECG and PCG, and to compute PEP, LVET, and PEP/LVET ratio. The system was tested on 17 healthy subjects and results showed high agreement between the systolic heart function status assessed by the proposed system and the corresponding echocardiography results. These results imply that the proposed system could be used for long-term follow up for patients with congestive heart failure.
Computerized Maintenance Management System in IR4.0 Adaptation - A State of Implementation Review and Perspective
Authors: Mohd Noor H , Mazlan S A , Amrin A 
Published: March 2021

Abstract
Computerized Maintenance Management System (CMMS) is a software package that stores computer databases of information about maintenance operations, evolving in the 1960s as the era of computational and mathematical systems began. Since then, the evolution of CMMS has continued to evolve with the ready availability of technology and requirements. While industry 4.0, refers to a new phase in the transformation of the industrial revolution (IR) focusing on digitization, automation, machine learning and real-time data. Therefore, the aim of this paper is to review the implementation of CMMS in revolution adjustment by investigating the functions of the IR4.0 in automation process and analysing the maintenance operations. The paper solely focused on the functionality of this system’s implementation attributes to the ability of the system integration to logically concept of IR4.0. This paper is also examined issues related to organizational and supplier readiness in integrating the IR4.0 concept into CMMS. In addition, by implementing CMMS based on IR4.0 enablement, it can have a significant impact on work processes, forward analysis, operations and maintenance costs.
4-Hydroxybenzohydrazide: A Potential Reactivator for Malathion-Inhibited Human Acetylcholinesterase
Authors: Mohamed R A , Ong K K , Halim N Abdul , Mohd. Kasim N A , Mohd. Noor S A , Knight VF , Muhamad R , Abdul Latif N S , Arif H , Wan Yunus W MZ 
Published: March 2021

Abstract
For years, oximes are used as antidotes for organophosphate (OP) poisoning treatments. However, due to the limitations of oxime therapy, the discovery of new group of antidotes that are effective for OP poisoning treatments is desirable. A number of chemicals have been in-silico screened for their potential as malathion-inhibited acetylcholinesterase (AChE) poisoning antidotes. This screening narrows down the selection of the compounds to be synthesized, therefore reduce the time and cost needed to produce the reactivators. YASARA, a bioinformatics tool was used to perform the docking study of malathion-inhibited human AChE and reactivator-malathion inhibited AChE complexations. Fourteen potential compounds were chosen for the estimation of their binding energies and nucleophilic attack distances with malathion inhibited AChE complexes to determine their antidote capabilities. A commercially available antidote, 2-PAM was used for the comparison. Based on their energies and nucleophilic attack distance with malathion-inhibited human AChE, 4-hydroxybenzohydrazide, could also be used as the antidotes.