bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of feed ration on the growth and body weight variation in pikeperch (Sander lucioperca L.) at different life stages in a recirculating aquaculture system
Authors: Kozłowski Michał , Szczepkowski Mirosław , Piotrowska Iwona , Szczepkowska Bożena
Published: April 2021

The aim of the study was to determine the impact of different feed rations (0.5, 0.8, 1.1% fish biomass) on the rearing parameters of pikeperch, Sander lucioperca (L.), reared in a recirculating aquaculture system. The study comprised two experiments. In the first, the material used had been sorted by a mean body weight of 35.5 g, while in the second the pikeperch were divided into three size classes: smallest individuals (class S) with a mean body weight of 59.5 g, medium-sized individuals (class M) with a mean weight of 69.3 g, and largest individuals (class L) with a mean body weight of 84.8 g. The experiments ran for 42 days. At the conclusion of the experiments, the highest body weight and length, daily growth rate, and specific growth rate were attained by the group of fish fed the ration of 1.1% of the fish biomass in both experiments I and II. The feed conversion ratio was also the lowest in this feed ration group, and it differed significantly statistically among the experimental groups (P < 0.05). The feed ration of 0.5% of the fish biomass was only sufficient to maintain vital functions, but it contributed only slightly to growth. The different feed rations did not have a significant impact on the final value of the body weight coefficient of variation of the pikeperch reared in the two experiments. The results of the experiment also indicated that pikeperch is a species with weak stock hierarchy and domination structure.
Impact of variety and extraction process on physico-chemical and sensory characteristics of virgin olive oil
Authors: Ghaoues Souheila , Namoune Hacène
Published: April 2021

The aim of this study was to evaluate the effects of variety and extraction system on the physico-chemical and sensorial characteristics of olive oils produced from three dominant varieties of Algeria (Azeradj, Chemlal and Sigoise). The olive oils were extracted by three different processes (pressure system, two-phase centrifugation and traditional process). Physicochemical parameters including free acidity, peroxide value, absorbance in ultra violet (K232, K270, ΔK) and sensory evaluation were studied. The results show that free acidity, peroxyde value and K270 were influenced by the extraction system and variety. Olive oils obtained from the two phases centrifugation and Chemlal cultivar were characterized by higher oxidative stability. Sensory characteristics of olive oils were mainly influenced by the variety and extraction system. Olive oils obtained from the two phases centrifugation, traditional cold process and Sigoise variety were characterized by the lower mean values of negative attributes.
Determination of antioxidant activity and total phenolic contents in yogurt added with black cumin (Nigella sativa L.) honey
Authors: Okur Özge Duygu
Published: April 2021

This study aims to reveal the antioxidant activity and phenolic ingredients of yogurts added with black cumin (Nigella sativa L.) honey. Therefore, this study aimed to produce healthy food made with black cumin honey with increased total phenolic contents and antioxidant activity. The effect of varying degrees of black cumin honey addition (0, 2.5%, 5%, 10%, 15%) on the antioxidant activity and total phenolic contents of yogurt were examined for 28 days. The antioxidant activity was found between 14.33 and 17.41 mM TE. Total phenolic compounds were between 202.50 and 1415.00 mg GAE/kg. Some important differences were determined between yogurts with black cumin honey and the control with respect to phenolic contents during storage (p < 0.05). The results of study reveal that the augmentation of fortification rate increased the total phenolic characteristic and antioxidant activity of yogurt with black cumin honey. Significantly, these outcomes indicate that yogurt with black cumin honey have a high level of polyphenols and could be consumed as bioactive composition.
Comparative studies of inhibitive properties of Ficus polita and Ficus platyphylla on corrosion inhibition of mild steel in acidic medium
Authors: Adah Christiana Agbenu , Adejo Sylvester Obaike , Gbertyo Joeseph Aondoaver , Ogwuche Andrew Adah
Published: April 2021

The menace of corrosion of steel in industries has been widely acknowledged. Analysis of oil pipeline failures in oil and gas industries in the Niger Delta area of Nigeria showed corrosion as one of the major causes of failure. Eco-friendly, cheap and renewable materials such as plant extracts have been investigated as alternative to the use of expensive synthetic chemicals which are often hazardous. In this study inhibitive properties of ethanol extracts of Ficus polita and Ficus platyphylla leaves as eco-friendly inhibitors of mild steel in 2 M sulfuric acid solution were investigated by weight loss method at temperatures of 301, 305, 309 and 313 K. The study has shown that both plant extracts inhibited the corrosion of mild steel in the acid medium. The inhibition efficiency (IE) and surface coverage (θ) for both extracts increased with increase in concentration and temperature. This trend is suggestive of chemical adsorption. However, the leaf extract of Ficus polita showed higher IE compared to F. platyphylla. Thermodynamic parameters and apparent activation energy obtained from the studies revealed the inhibition by both plant extracts to be spontaneous, exothermic and chemisorptive, while the adsorption mechanism of both plant extracts on the steel surface aligned with the Freundlich isotherm model, F. polita fits well to Temkin and Adejo-Ekwenchi isotherm models in addition.
Virtual Machine Placement Using Energy Efficient Particle Swarm Optimization in Cloud Datacenter
Authors: Madhumala R. B. , Tiwari Harshvardhan , Devaraj Verma C.
Published: April 2021

Efficient resource allocation through Virtual machine placement in a cloud datacenter is an ever-growing demand. Different Virtual Machine optimization techniques are constructed for different optimization problems. Particle Swam Optimization (PSO) Algorithm is one of the optimization techniques to solve the multidimensional virtual machine placement problem. In the algorithm being proposed we use the combination of Modified First Fit Decreasing Algorithm (MFFD) with Particle Swarm Optimization Algorithm, used to solve the best Virtual Machine packing in active Physical Machines to reduce energy consumption; we first screen all Physical Machines for possible accommodation in each Physical Machine and then the Modified Particle Swam Optimization (MPSO) Algorithm is used to get the best fit solution.. In our paper, we discuss how to improve the efficiency of Particle Swarm Intelligence by adapting the efficient mechanism being proposed. The obtained result shows that the proposed algorithm provides an optimized solution compared to the existing algorithms.
Development of Cost Estimation Models Based on ANN Ensembles and the SVM Method
Authors: Juszczyk Michał
Published: April 2021

Cost estimation, as one of the key processes in construction projects, provides the basis for a number of project-related decisions. This paper presents some results of studies on the application of artificial intelligence and machine learning in cost estimation. The research developed three original models based either on ensembles of neural networks or on support vector machines for the cost prediction of the floor structural frames of buildings. According to the criteria of general metrics (RMSE, MAPE), the three models demonstrate similar predictive performance. MAPE values computed for the training and testing of the three developed models range between 5% and 6%. The accuracy of cost predictions given by the three developed models is acceptable for the cost estimates of the floor structural frames of buildings in the early design stage of the construction project. Analysis of error distribution revealed a degree of superiority for the model based on support vector machines.
Elaboration of an Expert System for Sizing, Designing and Verifying Flexible Pavements
Authors: Bouacha Nadjet , Belachia Mouloud
Published: April 2021

The use of expert systems in the world of civil engineering, and in particular for roads, has become a necessity for the reason of the particularity, complexity, and diversity of the influencing parameters at the level of the design calculation, the latter of which represents the major source of subsequent degradation. This system consists of proposing a tool for helping the user firstly to size the body of the roadway, with several analytical methods and models (Pre-project, Boussinesq, Westgaard, and Burmister), and secondly, to offer different design possibilities (thickness and type of the material) that make up the layers. Lastly, it is to calculate the stresses and strains in order to compare them with admissible limits. The management of a knowledge base of complex natures (words, sentences, numbers, symbols, tables, calculation methods, equations, conditions, etc.) requires an adequate methodology which goes beyond the simple use of the technology but enables you to imagine the process of regrouping this mass of complex data and classifying the data, which can then be integrated into a database or spreadsheets and external programs designed with code compatible with the expert system generator. Our contribution relates initially to the formulation, organization, and preparation of the algorithms, and then the starting of the programs in order to conceive fully executable programs, the latter of which we can call the expert system. The validation of such a system was made as the work progressed, changes were made in the formulation of the rules, and the order and orientation of the data in the knowledge that the advantage of this type of system is the possibility of permanently reinforcing the database with human expertise in the field, or in books, especially so that we can avoid data loss due to illnesses, retirement, etc.
Performance Evaluation of the Base Isolation Technique on the Blast Mitigation of Spatial Structures
Authors: Gowda Kiran Kuppalli Krishne , Noroozinejad Farsangi Ehsan
Published: April 2021

Unpredictable threat and danger may occur in a structural system due to blast loading. Long-span spatial structures are very practical and common in airport terminals, exhibition centers, stadiums, and other public buildings. For high-rise and multi-story structures, horizontal pressure plays a major role in the level of damage to a structure, whereas long-span structures may be influenced by both horizontal and vertical pressure. In the current study, the applicability of lead rubber bearing (LRB) has been evaluated on a low-rise, long-span structure. The analysis is carried out by using the MATLAB Simulink platform. The simulation results indicate that the base isolation system which is usually adopted for seismic control of structures can adequately reduce the structural responses under blast loadings.
The Mosquitoes of Prešov Town (Slovakia) – a pilot study
Authors: Oboňa Jozef , Kanašová Katarína , Michalko Miloslav , Manko Peter
Published: April 2021

Mosquitoes and in particular their impact on human life and health are often the subject of applied research. Nevertheless, at present, basic research in this area, especially in cities seems to be neglected. This paper aims to bridge, at least in part, the gap in the knowledge of mosquito fauna at the local level and summarizes results of mosquitoes research in the Prešov town based on male morphological characters. In total, the presence of eight species of mosquitoes was confirmed in the study area (literary data and new records) which represents 15 % of the Slovak mosquito biodiversity.
Smart and Connected Health: What Can We Learn from Funded Projects?
Authors: Chen Minghong , Qu Jingye , Xu Yuan , Chen Jiangping
Published: April 2021

Following an integrated data analytics framework that includes descriptive analysis and multiple automatic content analysis, we examined 265 projects that have been funded by the National Science Foundation (NSF) under the Smart and Connected Health (SCH) program. Our analysis discovered certain characteristics of these projects, including the distribution of the funds over years, the leading organizations in SCH, and the multidisciplinary nature of these projects. We also conducted content analysis on project titles and automatic analysis on the abstracts of the projects, including term frequency/word cloud analysis, clustering analysis, and topic modeling using Biterm method. Our analysis found that five main research areas were explored in these projects: system or platform development, modeling or algorithmic development for various purposes, designing smart health devices, clinical data collection and application, and education and academic activities of SCH. Together we obtained a comparatively fair understanding of these projects and demonstrated how different analytic approaches could complement each other. Future research will focus on the impact of these projects through an analysis of their publications and citations.
Important Aspects of Polygraph Examinations of Islamic Faith People
Authors: Batyrov Tamerlan Stanislavovich
Published: April 2021

In this article the author gives recommendations for running polygraph examinations of Islamic faith representatives during the Muslim fasting period of Ramadan based on his own practical experience and interactions with Muslim psychologists, and also analyzes examples of incorrect formulations of relevant questions on the subject of Islamic terrorism / extremism in the course of screening examinations.
The Structure of Selected Basic Acrobatic Jumps
Authors: Król Henryk , Klyszcz-Morciniec Małgorzata , Bacik Bogdan
Published: April 2021

The aim of this study was to investigate the relationships between the internal and external structure of basic acrobatic jumps. Eleven healthy elite artistic gymnasts (9 female, 2 male) participated in this study. Participants performed the following basic ‘acrobatic’ jumps: a tucked backward somersault (TS), a piked backward somersault (PS), and a countermovement jump (CMJ). Furthermore, female gymnasts also performed the backward handspring (HS), taking off and then landing on their hands in the same place – a specific jump only for women. All jumps were initiated from a stationary upright posture and with an arms swing. Six infrared cameras, synchronized with a module for wireless measurement of the electrical activity of eight muscles, and the force plate were used. Infrared camera-recordings were made in order to obtain kinematic variables describing the movement structure of the acrobatic jumps. These variables may explain the characteristics of muscle activation (the internal structure of the movement) and ground reaction force (the external-kinetic structure of the movement). However, for various technical reasons, it was not possible to register all the specified jumps in the protocol. Moreover, the distribution normalities, estimated by the Kolmogorov-Smirnov test, differed between variables. Therefore, to compare the data, the pair-wise nonparametric Wilcoxon Signed-Ranks Test was applied. The CMJ showed the highest level of vertical impulse, velocity, and displacement followed by the TS, PS, and HS. In the take-off phase of acrobatic jumps with rotation the average muscle activation levels of the biceps femoris were significantly higher and of the rectus femoris significantly lower than in the countermovement jump.
Predicting the 2000‐m Rowing Ergometer Performance from Anthropometric, Maximal Oxygen Uptake and 60‐s Mean Power Variables in National Level Young Rowers
Authors: Cerasola Dario , Bellafiore Marianna , Cataldo Angelo , Zangla Daniele , Bianco Antonino , Proia Patrizia , Traina Marcello , Palma Antonio , Capranica Laura
Published: April 2021

Many studies reported various relationships between 2000-m rowing performance and anthropometric as well as metabolic variables, however, little is known about 60-s mean power in elite youth athletes. The aim of this study was to develop different regression models to predict 2000-m rowing indoor performance time (t2000) using anthropometric variables, maximal oxygen uptake (VO2max) and mean power established during a 60-s all-out test (W60) in national elite youth rowers. Fifteen youth male Italian rowers (age: 15.7 ± 2.0 years; body height: 176.0 ± 8.0 cm; body mass: 71.2 ± 10.0 kg) performed an incremental maximal test, a 60-s all-out test and a 2000-m race simulation using a Concept2 rowing ergometer to assess VO2max, W60 and t2000, respectively. The relationships of all variables with t2000 were investigated through Pearson’s correlation. Multiple regression analyses were used to verify the best prediction model of 2000-m indoor rowing performance. The reliability of these models was expressed by R2 and the standard error of estimate. The results showed that t2000 was significantly correlated with all the examined variables, except for VO2max/body mass and age, and exhibited the significantly highest relationship with W60 (r = -0.943). The combination of anthropometric, VO2max and W60 variables was found to be the most reliable equation to predict t2000 (R2 = 0.94, SEE = 6.4). W60 measure should be considered when monitoring the rower’s capability to perform high-intensity phases, important during the race’s fast start and end. Not requiring expensive equipment and long duration, a 60-s all-out test could be considered a valuable tool for predicting 2000-m performance of elite youth rowers.
Acute Effect of Sodium Bicarbonate Supplementation on Symptoms of Gastrointestinal Discomfort, Acid‐Base Balance, and Performance of Jiu‐Jitsu Athletes
Authors: Ragone Luciano , Guilherme Vieira João , Camaroti Laterza Mateus , Leitão Luis , da Silva Novaes Jefferson , Macedo Vianna Jeferson , Ricardo Dias Marcelo
Published: April 2021

The purpose of the present study was to verify the acute effect of sodium bicarbonate supplementation on symptoms of gastrointestinal discomfort, acid-base balance and intermittent isometric handgrip test performance in Jiu-Jitsu athletes. Ten male (22.2 ± 3.9 years; 174 ± 0.07 cm; 74.5 ± 8.9 kg) jiu-jitsu athletes participated in this counterbalanced double-blind crossover study. Two protocols, a) supplementation with 0.3 g.kg-1of body weight of sodium bicarbonate, and b) supplementation with 0.045 g.kg-1of body weight of placebo substance, were employed. Gastrointestinal tolerability was assessed by the questionnaire. Blood samples were collected at three time points (baseline, pre-ISO, and post-ISO) to determine the responses of potential hydrogenionic (pH), bicarbonate (HCO3-), base excess (EB) and lactate concentrations. The maximum voluntary contraction test and the intermittent isometric contraction test were also performed. As a result, none of the athletes reported significant gastrointestinal discomfort (p > 0.05). HCO3-, pH, and EB at the pre-ISO and post-ISO moments were significantly higher for the sodium bicarbonate protocol. Lactate concentrations were significantly higher for both post-ISO protocols (p = 0.000). There was no significant difference in the performance of the maximum voluntary contraction test and the intermittent isometric contraction test (p > 0.05). Thus, we conclude that sodium bicarbonate supplementation does not generate adverse responses resulting in gastrointestinal discomfort, and does not benefit performance yet promotes a state of metabolic alkalosis.
The Immediate Effects of Self‐Myofacial Release on Flexibility, Jump Performance and Dynamic Balance Ability
Authors: Zhang Qingshan , Trama Robin , Fouré Alexandre , Hautier Christophe A
Published: April 2021

Self-myofascial release (SMR) is a popular method to potentially increase the compliance and extensibility of the fascia and reduce muscle stiffness. The purpose of this study was to examine the acute effects of posterior muscle chain SMR on flexibility, vertical jump performance and balance ability. Eighteen young participants volunteered to take part in this crossover design study. They performed two self-massage sessions in randomized order separated by at least one week. One session consisted of posterior muscle chain SMR whereas the other one was performed on the upper limbs as a control intervention (CON). Flexibility was measured with the Toe Touch Test (TTT), Weight-Bearing Lunge Test (WBLT), and Straight Leg Raise Test (SLR). Jump performance was evaluated during a squat jump, a counter movement jump and a stiffness jump. Dynamic balance ability was assessed through the Star Excursion Balance Test. All these variables were measured before and after each intervention. A significant increase in flexibility (+3.5 ± 1.8 cm, +1.6 ± 1.0°, and +7.7 ± 4.0° for the TTT, WLBT, and SLR, respectively, p < 0.003) and balance performance (4.8 ± 3.9 cm, p < 0.003) was observed following SMR intervention compared to CON. Conversely, jumping performance was unchanged in both groups. SMR improves joint flexibility and dynamic balance ability.
Variation in Lower Limb Power and Three Point Shot Performance Following Repeated Sprints: One vs. Five Changes of Direction in Male Basketball Players
Authors: Brini Seifeddine , Delextrat Anne , Bouassida Anissa
Published: April 2021

Repeated sprint ability (RSA) with five changes of direction was well admitted to replicate real basketball game situations, but the additional changes of direction may affect some fundamental skills and performances in basketball. The aim of this study was to investigate the effects of RSA with one vs. five changes of direction (IRSA5COD) on squat jump (SJ), five jump test (FJT) and three point shot (3PS) performances in male basketball players. Sixteen participants (23.4 ± 2.3 years; 1.86 ± 0.10 m; 77.8 ± 7.7 kg) randomly performed eight testing sessions consisting of either RSA (10 repetitions of (15 m + 15 m)) or IRSA5COD (10 repetitions of (5 m + 5 m + 5 m + 5 m + 5 m + 5 m)) performed alone or immediately followed by the SJ, FJT or 3PS. The heart rate (HR) and ratings of perceived exertion (RPE) were continuously recorded, while blood lactate concentration was measured post-tests. Differences between RSA and IRSA5COD were evaluated by a Student t-test for paired samples, while analyses of variance (ANOVAs) with repeated measures assessed differences in SJ, FJT and 3PS performance between baseline, post-RSA and post-IRSA5COD. A significantly poorer FJT performance post-RSA was shown compared to baseline (7.47 ± 0.47 vs.7.54 ± 0.47 m, p = 0.01) and post-IRSA5COD (7.47 ± 0.47 vs. 7.56 ± 0.49%, p = 0.048). Significantly lower 3PS accuracy was also observed post-IRSA5COD compared to baseline (41.3 ± 3.1 vs.53.1 ± 2.8%, p = 0.003) and post-RSA (41.3 ± 3.1 vs. 48.1 ± 3.7%, p = 0.033). These results suggest that jump performance required for crucial actions such as lay-ups is negatively affected by longer sprints (15-m) with few changes of direction, while 3PS accuracy is impaired by shorter sprints with many changes of direction. These situations should be replicated when training these particular abilities to optimize training adaptations.
Victory Prediction of Ladies Professional Golf Association Players: Influential Factors and Comparison of Prediction Models
Authors: Chae Jin , Park Jin , So Wi-Young
Published: April 2021

This study aims to identify the most accurate prediction model for the possibility of victory from the annual average data of 25 seasons (1993–2017) of the Ladies Professional Golf Association (LPGA), and to determine the importance of the predicting factors. The four prediction models considered in this study were a decision tree, discriminant analysis, logistic regression, and artificial neural network analysis. The mean difference in the classification accuracy of these models was analyzed using SPSS 22.0 software (IBM Corp., Armonk, NY, USA) and the one-way analysis of variance (ANOVA). When the prediction was based on technical variables, the most important predicting variables for determining victory were greens in regulation (GIR) and putting average (PA) in all four prediction models. When the prediction was based on the output of the technical variables, the most important predicting variable for determining victory was birdies in all four prediction models. When the prediction was based on the season outcome, the most important predicting variables for determining victory were the top 10 finish% (T10) and official money. A significant mean difference in classification accuracy was observed while performing the one-way ANOVA, and the least significant difference post-hoc test showed that artificial neural network analysis exhibited higher accuracy than the other models, especially, for larger data sizes. From the results of this study, it can be inferred that the player who wants to win the LPGA should aim to increase GIR, reduce PA, and improve driving distance and accuracy through training to increase the birdies chance at each hole, which can lead to lower average strokes and increased possibility of being within T10.
Ruumiillinen erilaisuus: tanssi ammattina?
Authors: Pohjola Hanna
Published: April 2021

Over the past three decades Western theatrical dance has been experiencing time of growth, development and change in its ontology. As a part of this shift of paradigm, dancers with bodily differences have made an entrance and initiatives across various contexts in dance: on stage, education and research. Most commonly, inclusive and integrated discourse of dance and disability research has been focusing on access and participation in dance. Dance artists with disabilities, and their experiences on bodily difference has been under-researched. Hence, emphasis on bodily difference has been on social meaning, instead of dancer’s movement.

This article focuses on professional dancers with disability within the context of socialization. Thus, factors such as dance ontology and its normative expectations, education, employment and spectators’ gaze that may facilitate or hinder dancer with disability are discussed. In short, the change for disabled dancer has been gradual, and obstacles partly still remain. Thus, it is essential to ensure that this progression continues. One possibility could be in utilising knowledge and experience existing in disabled dance artists as well as acknowledging the art behind the hypervisibility of bodily difference. Therefore, dance as an art form would be valued in its all existence.
Genetic diversity of marginal populations of Populus euphratica Oliv. from highly fragmented river ecosystems
Authors: Kansu Çiğdem , Kaya Zeki
Published: April 2021

Populus euphratica Oliv. (Euphrates poplar) is one of the naturally distributed poplar species and limited to south and southwestern Turkey. The species possesses great importance for both renewable energy resources and persistence of a healthy river ecosystem. Due to increased habitat destructions and fragmentation by human activities, the distribution area of this species has become narrower. Hence, searching for potential genetic diversity present in species’ genetic resources is of great importance in terms of its resilience to changing environment as well as breeding and use. To explore genetic structure and diversity of Euphrates poplar, natural populations in the Göksu and Euphrates river ecosystems were studied with 21 microsatellite DNA loci. Results demonstrated reduced level of genetic diversity (Ho:0.44, uHe:0.45) and low differentiation among two river populations (FST= 0.07), suggesting a common origin. It appears that severe past reductions in population sizes have resulted in loss of genetic variation in the species. Native populations of this species in two rivers seemed to be marginal with continued gene pool shrinkage. Therefore, they are in great danger of collapsing, mainly because of continued habitat loss and fragmentation. Genetic data generated with the current study provide important information which could be useful for future restoration and conservation studies of the species.
Music and Theatre Making In Canadian Prisons
Authors: Maki Tessa
Published: April 2021

The benefits of engaging in theatre- and music-making have been well proven for various populations. (see Črnčec et al. 2006; Lehmberg and Fung 2010; Salur et al 2017, etc.) These benefits are particularly significant for individuals who have experienced trauma, especially incarcerated individuals. (see Kyprianides and Easterbrook 2020; Reid 2019, etc).

Music and theatre programs vary in Canada, and are present in many Canadian prisons. In this paper, I examine two programs more closely: the grass roots program Pros and Cons at The Joyceville Institution in Kingston, Ontario, which involves a collaboration between volunteer musicians and a group of incarcerated men, and Diane Conrad’s work with a young offender’s facility in Alberta Canada, where she employed devised theatre techniques to create meaningful theatrical pieces within the prison’s walls. Both these programs are working towards a similar goal: preparing the incarcerated individuals to return to society through practicing and rehearsing healthy community and citizenship through collaborative music and theatre. While this is an admirable goal for this work, the conversation surrounding music and theatrical work in prisons has been focused on its rehabilitative aims and properties. In this presentation I will explore the features of both programs, examine the rehabilitation goals and the focus on rehabilitation in the literature on prison-based music and theatre programs, and discuss ways that Transformative Justice and the Abolitionist movement can be supported through these arts-based initiatives.
Ad26.COV2.S viral vector vaccine’s safety and immunogenicity: A review of literature
Authors: Eskander Sherry
Published: April 2021

COVID-19 is a respiratory infectious disease that spreads through droplets. This disease has brought immense changes that impacted all countries around the world and the healthcare system in many ways. Developing an effective vaccine has been a high priority and clinical trials are continuously conducted to improve their efficacy. There are two current competing forms of the vaccine: the first is mRNA vaccines, where they act as a carrier for immunological information encoding for the antigen (spike proteins) and induce an immune response without interacting with the genome. Although they have an effectiveness of 95%, they do require two doses to be fully effective. On the other hand, viral vector-based vaccines use a vector to deliver the genetic code for the antigen and, like a normal infection, uses the body cell’s machinery to produce more antigen, triggering an immune response.  Many clinical trials are being done to improve and evaluate its efficacy as this vaccine provides substantial potential advantages, one of which includes requiring only one dosage to be vaccinated to reach greater effectiveness in inducing antibody and CD4 T cells production. In consideration of the WHO SAGE Roadmap for vaccine prioritization, the aim of this study is to provide a review of the current literature and clinical trials being conducted on the viral vector vaccine Ad26.COV2.S’s safety and immunogenicity. In addition, it assesses potential future directions, implications and the substantial benefits towards the health care system and at-high-risk populations.
Obligaciones de la materialidad en operaciones de los contribuyentes
Authors: Cornejo Martínez Samuel Zeniff , García García María del Carmen , Chávez Cruz Esther , Colorado Colorado Ricardo
Published: April 2021

Resultado de la globalización que se experimenta hoy en día son los cambios que surgen en materia tributaria en la adecuación de las normas con el uso de Tecnologías de Información y Comunicaciones (TIC’s), y los requisitos de los Comprobantes Fiscales Digitales por Internet (CFDI) porque la autoridad tiene más información sobre el contribuyente al tener conocimiento de primera mano de las operaciones realizadas durante un cierto período, ya que la propia autoridad autoriza su emisión. Una vez que se han emitido los comprobantes, es el derecho del contribuyente deducir el gasto y acreditar el impuesto correspondiente. Sin embargo, la autoridad fiscal considera necesario demostrar la materialidad para verificar dicha transacción. Este trabajo revela la importancia de tener contratos en la venta comercial, la forma de probar el fondo de la transacción y su efecto fiscal. El contenido destaca la relación entre el comprador y el vendedor y como un hecho comercial del que surgen las obligaciones tributarias a las que los contribuyentes están sujetos a cumplimiento. En una revisión de la información localizada y la experiencia con las verificaciones practicadas por la autoridad fiscal, se formen juicios sobre las facultades de comprobación.
Characteristics of Oil Used in Frying Peanuts, Cassava And Mackarel Tuna
Authors: Aprialis Aprialis , Kasim Anwar , Rini Rini
Published: April 2021

The characteristics of used frying oil that are carried out repeatedly using high temperatures and with various types of frying materials will produce new types of oil characteristics, either the appearance and disappearance of certain types of chemical components or changes in the physical properties of frying oil. This study aims to determine the characteristics of cooking oil used in frying peanuts which have high fat content, high carbohydrate content of cassava and mackarel tuna which have high protein content. Samples of used oil were obtained from the use of pure oil from palm oil and then the 3 different types of material were fried with 10 frying repetitions. The used frying oil was then visually observed and analyzed for the number of peroxides, free fatty acids, and moisture content, color test, amount of oil lost and its fatty acid profile. In addition, the amount of oil lost due to frying was observed. The results of the observation of physical properties showed that the smell of oil became rancid, the taste of the oil became bitter and the color turned black. The results of chemical analysis showed that the highest peroxide number was 50 meq / kg, the highest ALB was 4.35%, and the highest moisture content was 3.21% , the oil color changed to brown to black, the highest amount of oil lost due to frying was cassava frying oil. namely 58.4% , . The fatty acid profile of used frying oil has been obtained and there is a decrease in the percentage, the appearance of stearic acid and the loss of heptadecanoic fatty acids in the used cooking oil for peanuts, cassava and mackarel tuna.
A PRÁTICA ESPORTIVA, O EXCESSO DE CONDUTA E A RESPONSABILIDADE CIVIL DECORRENTE DE DANOS
Authors: Silva Murilo De Lima , Marchetti Filho Gilberto Ferreira
Published: April 2021

Aos praticantes de esportes vale sempre relembrar que as atividades desenvolvidas, ainda que autorizadoras com certo contato físico, devem sempre respeitar a integridade física dos demais participantes, sob pena de responsabilidade, ainda que ausente a intenção deliberada de atingir e/ou lesionar terceiro, quando apesar de não ser este o resultado perseguido se assume tal risco com atos desproporcionais ao esporte, trazendo assim danos a outrem bem como a responsabilidade de reparar tal feito, embasado no que tange as leis do direito brasileiro.
EXPERIMENTAL TESTING OF THE METHODOLOGY OF BUILDING PRE-SERVICE FOOD TECHNOLOGIST’S SPEECH PRODUCTION COMPETENCE
Authors: ANNA BOYKO
Published: April 2021

The article presents the results of experiment organized to test the effectiveness of the methodology for building pre-service food technologist’s speech production competence in the process of self-directed work. The present research is based on the using of the following methods: studying and analyzing scientific publication on methodological experiment, observing the process of training, conducting methodological experiment, interpreting the results of experiment with the help of the methods of mathematical statistic. The hypothesis, the object, the subject, the task of the experiment, experimental materials, the varied and non-varied values, the experimental phases (organization, realization and dates constatation), the experiment nature (base, natural, opened, vertical-horizontal) are outlined. According to the hypothesis of the experiment the building pre-service food technologist’s speech production competence will be more effective provided by the using of special selected authentical professional oriented video texts, realization of the studying on the base of the professional oriented exercises subsystem, selection of the more optimal variant of studying organization on the stage of preparation. The data of pre-experimental and post- experimental sections are analyzed using the coefficient of the training proposed by V. P. Bespalko. The results of the experimental training using the criterion the Fisher transformation are interpreted. The data of the pre-experimental test declared that students in both experimental groups had the identical low level of speech production competence. The data of the pre-experimental test declared the growth of speech production competence. According to the experiment data one of the methodology variants has been proven to have a higher effect. The experimental testing proves the effectiveness of the methodology for building pre-service food technologist’s speech production competence of future pre-service food technologists as well as the effectiveness of the developed subsystem of exercises.
KEANEKARAGAMAN JENIS IKAN AIR TAWAR DI SUNGAI DONG SANDAR DAN SUNGAI REMPANGI DI KECAMATAN SUNGAI LAUR KABUPATEN KETAPANG
Authors: Saputra Ongki , Anwari M Sofwan , Herawatiningsih Ratna
Published: April 2021

Deforestation will affect changes in the condition of the waters of the protected and secondary forest watersheds that can affect in it biota . Fish have limited ability to choose areas that are safe for their lives, especially the environment that is very supportive for the availability of food sources. The fish population in the Dong Sandar River and Rempangi as well as the diversity of fish species in both rivers is unknown. The problem of this research is how the diversity of fish species in the Dong Sandar River and Rempangi River, Sungai Laur District, Ketapang. Research on the diversity of freshwater fish species in the Dong River between the protection of protected forests and the Rempangi River in the secondary forest of Sungai Laur Subdistrict, Ketapang District, West Kalimantan consisting of 20 stations each of which there are 10 observation stations conducted on May 1 - 21, 2018. The selection of observation stations is selected (purposive sampling) which is based on consideration of the conditions and conditions of the aquatic environment. The results of the research were 884 individuals from 50 species of 18 families with the use of scattered, pukat, seluak, bubu, temilar, sauk , and ambe exploration tools. The most types of fish obtained on the Dong Sandar River and Rempangi River consist of the Cyprinidae family (20 species), Bagridae family (7 species), Siluridae family (4 species). The diversity of fish species in the Dong Sandar River and Rempangi River in Ketapang Regency is relatively moderate (H '<3) with a diversity index (H') of 2.94, if H '<1 means low diversity, if 1 <H' <3 means moderate diversity and if H '> 3 means high species diversity. The dominant index (C) on the Dong Sandar River is 0.09 while in the Rempangi River 0.11, the range of dominant index values is 0 - 1 if the value C = 0 means that there are no types of fish dominating and if C = 1 means there are other types of fish dominating. The highest evenness index (E) is found in the Rempangi River of 0.77 and in the Dong Sandar River 0.76, it can  be seen the range of evenness of species index 0-1 if the value E = 0 means low type evenness, and if the value E = 1 means evenness is relatively evenly. The species richness index (R) of the Dong Sandar River has abundant types of fish with a value of 7.26 while in the Rempangi River only 4.40. Evenness on both rivers is 57.53%.Keyword :  Diversity, Dong Sandar River, Fish, Rempangi River
IDENTIFIKASI JENIS DAN PEMANFAATAN TUMBUHAN OBAT DI HUTAN TEMBAWANG OLEH MASYARAKAT KELURAHAN BERINGIN KECAMATAN KAPUAS KABUPATEN SANGGAU
Authors: Rahman Khairul , Wardenaar Evy , Mariani Yeni
Published: April 2021

AbstractThis research was carried out in four locations of the Tembawang Forest in Lingkungan Semajau  (RW 9), namely Semajau (T1), Tebanan (T2), Sebayur (T3), and Koling (T4). In addition, interviews were also held with people who living near health facilitiy (RW 2), in Beringin Village of Kapuas Subdistrict of Sanggau Regency, West Kalimantan. This research aims to documented the medicinal plants and the knowledge of medicinal plants utilization used by traditional healers and communities of RW 2 and RW 9 of Beringin Village. In this research, we found a total of number of 100 medicinal plants species used by traditional healers, and it belonging into 55 families. The most common family is the Zingiberaceae, and tree habitus is the most common habitus found in all four Semajau tembawang forests. The parts of medicinal plants used by the community of Beringin Village are in the form of roots, seeds, fruit, flowers, leaves, bark, fruit skin, rhizomes, tubers, and all parts of medicinal plants. The most common method of processing medicinal plants is boiling, and oral (eat or drink) are the most common administration method.Keywords: Beringin Village, Medicinal Plants, Sanggau Regency, Tembawang Forest, Traditional Knowledge.
KEANEKARAGAMAN JENIS KUPU-KUPU (ORDO LEPIDOPTERA) PADA RUANG TERBUKA HIJAU KOTA PONTIANAK
Authors: Oktaviati Wina , Rifanjani Slamet , Ardian Hafiz
Published: April 2021

Butterflies are one type of insect found in the green open space of Pontianak City. Butterflies can be used as bioindicators of environmental changes because butterflies are very sensitive to biotic and abiotic factors (Rizal, 2007). This study aims to obtain data and analyze the diversity of butterfly species in the green open space of Pontianak City. The study used a field observation method with sweeping net techniques and explored areas in three habitats namely Sylva Untan Arboretum, Untan S1 Forestry Campus and West Kalimantan Governor's Hall Pavilion. The three green open spaces were chosen based on the density and diversity of the vegetation. The results of the study found 22 types of butterflies. The same six types are found in three different types of open green space, namely Leptosia nina, Agamemnon Graphium, Papilio polytes, Hipolimnas bolina, Eurema hecabe, and Appias lybithea. The species diversity index at the Arboretum has a value of 2.74, Campus S1 Forestry Untan with a value of 2.19 and Pendopo Park with a value of 2.02. This value indicates that species diversity in green open space is classified as medium.Keywords: butterfly diversity, green open space, bioindicator
KEANEKARAGAMAN JENIS VEGETASI DI CAGAR ALAM LHO FAT PUN PIE KECAMATAN MONTERADO KABUPATEN BENGKAYANG
Authors: Putra M Alihi , Burhanuddin . , Manurung Togar Fernando
Published: April 2021

A nature reserve is a nature reserve area which because of its natural condition has a unique or unique type of plant or plant diversity along with natural phenomena and its ecosystem that requires protection and preservation so that its existence and development can take place naturally. The research objective was to obtain a variety of vegestation types, this study as a source of information regarding the diversity of vegetation in the Lho Fat Pun Fie Nature Reserve Monterado District, Bengkayang District. This research was conducted in Lho Fat Pun Fie Nature Reserve, Monterado District, Bengkayang Regency, this study was conducted 4 weeks in the field. The method used is a combination of lines and grid lines. Laying of the first line is purposive sampling, for the next paths are systematically sampling. The number of lanes used is 4 lanes with a length of 200 meters, each lane has 10 observation plots with an area of 1.6 ha. Based on an analysis of the diversity index of vegetation types in the Lo Fat Pun Fie Nature Reserve Monterado District, Bengkayang Regency is included in the medium category (H’1≤ H’≤3). Overall there are 35 types of vegetation ranging from the height of the seedlings to the level of the tree with a total of 1000 individuals. The species that dominate the study site are the tribe myrtaceae such as Syzygium liniatum, Syzygium grande, Rhodomytus tomentosa.Keyword : Lho Pat Pun Pie nature preserve, Monterado district, Vegetation diversity
PENDUGAAN KARBON TERSIMPAN PADA TEGAKAN DI KAWASAN ARBORETUM SYLVA UNIVERSITAS TANJUNGPURA
Authors: Suryandari Priska , Astiani Dwi , Dewantara Iswan
Published: April 2021

Indonesia's tropical forests have an important large amounts of carbon and biodiversity land. The landcover change of the forest for other uses such as agriculture or plantations, particularly in the carbon-rich peat land, making Indonesia become one of the biggest greenhouse gas emitters in the world. Along with the increase of the earth's temperature that rising quite sharply in recent years, Arboretum storage development programs are important in reducing air pollution. Arboretum storage created as a buffer area for water needs, natural environment and carbon storage as well as a have for the flora and fauna in urban areas. One of the Arboretum in the province of West Kalimantan is the area Arboretum Sylva Faculty of forestry Universitas of Tanjungpura Pontianak. The area is an planted with trees and other vegetation forming a structure resembling a forests and an area for the conservation of forest germplasm. It is needed to do re-measurement to search for the growth of the carbon stock in the Arboretum Sylva Tanjungpura University during a period of six years after the initial measurement. This research aims to register total value of (carbon stock) in the area of the Arboretum of the University of Tanjungpura Sylva. The method used for the research was survey sampling with non destructive measurement assesment for tree stage. Data collection was done by census/sampling intensity (100%). While  for the level of sapling, pole stage, stake and necromass were done by nested plots. The results show carbon stock stored for the per unit area was 255.55 tons/Ha and the value of carbon stored whole area was 817.76 Tons.  Keywords: stored carbon, tropical forests, Urban forests
ETNOBOTANI REMPAH TRADISIONAL DI DESA EMPOTO KABUPATEN SANGGAU KALIMANTAN BARAT
Authors: Robi Yohanes , Kartikawati Siti Masitoh , Muflihati .
Published: April 2021

This study examines the ethnobotany of traditional spices in the Village of Empoto, Sanggau District, West Borneo. The research was conducted by interviewing, observing and making herbarium specimens. This study aims to record the plants spesies used as traditional spices, and explore the  patterns utilization of plants as traditional spices by the pople in the village of Empoto, Sanggau District, West Kalimantan. As many as 59 plants species from 27 families are traditionaly used by the communities in Empoto village as traditional spices. The most widely used of plant family is Zingiberaceae (8 species). The highest utilization of plants as spices are derived from Dayak tribe, followed by Malay tribe and simultaneous utilization of this both tribe, (100%, 28% and 28% respeetively). The pattern of utilization of spices used by the poeple in Empoto Village, Sanggau District,West Kalimantan is grouped into 7 patterns, namely spices as spices, flavour enhancers, aromatics, preservatives, naturalizers, softeners and coloring.Keywords : Empoto Village, Ethnobotany, Traditional Spices