bluuebunny/crossref_metadata_2025 huggingface dataset:
Review: Antioxidant Activity Test of Various Types of Mangroves
Authors: Nengsih Erlinda , Eriadi Aried , Fajrina Anzharni
Published: August 2021

Free radicals are reactive oxygen that have unpaired electrons looking for partners by binding to electron molecules in the vicinity. Free radicals can cause several degenerative diseases such as diabetes, atherosclerosis, Parkinson's disease, Alzheimer's disease. The content of secondary metabolites in mangroves has the potential to prevent various diseases. Several methods commonly used to estimate the presence of antioxidants in plants include DPPH (2,2-diphenyl-1-picrylhydrazyl), FRAP (ferrous reducing antioxidant power), and ABTS (2,2-azinobis-3-ethylbenzothiazole-6-sulfonic acid). The results of recent studies showed that some mangrove plants have antioxidant activity including: Rhyzophora mucronata, Nypa fruticans, Avicennia marina, Sonneratia alba, Acanthus ilicifolius L, Acrostichum aureum dan Scaevola taccada. Mangrove plants that have the highest IC50 value were found in leaves (methanol extract). The antioxidant activity of mangrove plants is caused by the presence of secondary metabolites contained in the extract such as flavonoids, phenolics, saponins, and tannins.
Celiac Disease
Authors: Chourasia Saloni , Ahirwar Sakshi
Published: August 2021

Celiac disease is an autoimmune disorder in which our immune system responds abnormally to gluten. Where symptoms of celiac disease diarrhea, bloating, fatigue, low blood count and osteoporosis. Many have no symptoms. Treatment of celiac disease is permanently removing gluten from our diet.
Oral Health & Dentistry in Bhutan: call for actions to address a public health urgency
Authors: Tenzin Karma , Gyeltshen Tshewang , Bajgai Gyan P , Nyedup Sonam , Choki Choki , Rimal Jyotsna , Kharbanda OP , Wangmo Dechen , Dorji Gampo
Published: August 2021

Introduction: Bhutan’s healthcare approach in achieving the sustainable development goal 3 (SDG 3) has been largely through primary healthcare as enshrined in the universal health coverage (UHC). Bhutan has forged a unique primary healthcare model in which oral health is integrated in its primary care initiatives. The Oral Health program under the Department of public health was established in 1999 with clear line objectives. The program has achieved commendable successes over the years. However, with changing needs, enhancing and mainstreaming of oral health and dentistry in the country must be accorded a top priority. This is particularly important as the Oral Health Policy and service standards were drafted fourteen years ago in 2007. The 2021 World Health Orgnization (WHO) agreement “to provide basic oral health services to all”, to which Bhutan is signatory, needs to be strictly implemented. Therefore, oral health dialogue was conducted to deliberate on the oral health systems in the country with experts from the field who were from within and outside Bhutan. This oral health policy dialogue generated important themes such as strategic and competent workforce, capacity development, need to transform oral health services in more people centric ways and mainstreaming oral health in other health policies.
MEDITAÇÃO: PARE. RESPIRE. E MUDE SUA VIDA
Authors: Telesi Pacheco Conceição Joelma , Magera Conceição Márcio , Costa Ricardo
Published: August 2021

Resenha da obra Meditacao: Pare. Respire. E mude sua vida de Alexandre De Santi.
APRENDIZAGEM E DOUTRINAÇÃO
Authors: Lopes da Silva Moises
Published: August 2021

Todo o ser que aprende escolhe seu estilo de aprendizagem a partir de duas fontes, a que flui do inato/indivíduo ou a que vem do empírico/meio. O aprimoramento dos estilos de aprendizagem crescerá no espiral ascendente da movimentação de recursos cognitivos  (Piaget, 1977) que, por sua vez, dependerá da significação dos resultados desse processamento que de um lado se converterá nos assunçores de Ausubel (1978) por adquirirem uma moral e/ou juízo de valor verdadeiro à equilibração das tríades: psicomotora (cognição/ motricidade/ afetividade) (Silva, 2020); psicanalítica (id/ ego/  superego) (Freud, 2010) e morfológica (Lobos do Telencéfalo/ Sistema Límbico/ Sistema Nervoso Central) (Wecker, 2001) que se equiparam a equilibração-pós-perturbação (Piaget, 1977) e, portanto, verdadeiro ao inato ou não na falta dessa equilibração; do outro lado se tornarão em simples placas informativas indicando uma possibilidade de significado na melhor das hipóteses ou psicóticos na pior delas. Segundo Wallon a dimensão afetiva da tríade psicomotora é que principia a equilibração ou desequilibração do ser cognoscente. “A sensibilidade tem um nível afetivo e outro cognitivo, assim como a motricidade e a linguagem. A revolução orgânica provocada pela emoção se apresenta nas sensações: viscerais, metabólicas, respiratórias, diminuição da acuidade da percepção do exterior [...]” (Wallon 1879-1962 como citado em Dantas, 1992, p. 93). O problema do artigo é: Wallon estaria certo? O que justifica a pesquisa.
AN INVESTIGATION OF THE RELATIONSHIP BETWEEN WORK ENVIRONMENT PRACTICES AND EMPLOYEE RETENTION IN INTERNATIONAL NON-GOVERNMENTAL ORGANIZATIONS IN NAIROBI COUNTY, KENYA
Authors: Musinya Fred Domiano
Published: August 2021

Purpose: The purpose of this study was to investigate the relationship between workplace environment practices and employee retention in selected International Non-Governmental Organizations in Nairobi County.

Methodology: This study adopted a descriptive survey design. The sampling frame was the listing of staff in 93 International Non-Governmental Organizations that were selected using a simple random sampling method from the 1,252 INGO’s with offices in Nairobi County. Purposive sampling was used to select 120 staff from the 93 INGOs who participated in the study. A semi-structured self-administered questionnaire was used to collect primary data while secondary was collected through a review of published literature such as annual INGO reports, journal articles and published theses. Data analysis involved preparation of the collected data - coding, editing and cleaning of data in readiness for processing using Statistical Package for Social Sciences (SPSS) package version 24.0. Cronbach’s Alpha was used to measure consistency and content validity. Quantitative data was analyzed using detailed statistics that include mean, standard deviation as well as the statistical package of social sciences (SPSS) version 24 and Microsoft Excel. Qualitative data was evaluated and analyzed using content analysis. Multiple linear regression analysis was used to evaluate the relationship between the independent and dependent variables and information obtained from the study presented using graphs, charts, written text and tables. 

Results: Internal promotion plans, mentoring programs, management support, effective career development policy, proper individual performance management, practical on-the-job training, effective organizational training policy, flexible leave plans, job sharing and job scheduling practices strongly influence the intention of the respondents to stay with their employers. More work needs to be done to improve succession planning, career break practices and the overall effectiveness of the work life balance policy.
Predictive Analytics of COVID-19 Pandemic: Statistical Modelling Perspective
Authors: KUMAR S Lokesh , SAROBIN M Vergin Raja , ANBARASI L Jani
Published: August 2021

The novel Coronavirus-19 (COVID-19) is an infectious disease and it causes serious lung injury. COVID-19 induces human disease, which has killed numerous people around the world. Moreover, the World Health Organization (WHO) declares this virus as a pandemic and all countries attempt to monitor and control it by locking all places. The illness induces respiratory influenza like problems with symptoms such as cold, cough, fever, and the difficulty of breathing in extremely severe cases. COVID-2019 has been viewed as a global pandemic, and a few analyses are being performed using multiple computational methods to predict the possible development of this pestilence. Considering the various conditions and inquiries these numerical models are based on future tendency. Multiple techniques have been proposed that could be helpful in forecasting the spread of COVID-19. Through statistical modeling on the COVID-19 data, we performed linear regression, random forest, ARIMA and LSTMs, to estimate the empirical indication of COVID-19 ailment and intensity in 4 countries (USA, India, Brazil, and Russia), in order to come up with a better validation.
HIGHLIGHTS

Provide a comparative analysis taking into consideration the dataset from Our World in Data of 4 countries (Brazil, India, Russia, and USA), to provide optimum test cases and validation across multiple trend patterns focused at 2 forecasting events namely, cases forecasting and deaths forecasting
Three statistical modelling approaches (linear regression, random forest, and ARIMA) and 1 deep learning approach (LSTMs) were explored
Performance metrics and diagnostic tools such as residuals, correlograms, RMSE, AIC and BIC were implemented to monitor models’ accuracy
ARIMA outperformed linear regression and random forest in terms of accuracy prediction of test data
ARIMA and LSTMs were compared again with death forecasting task, in which LSTMs were able to provide very high accuracy in comparison

GRAPHICAL ABSTRACT
Integrated Grid-connected Hybrid Power Generating System with Optimized PLL-based Power Control
Authors: PANDEY Pawan , SANDHU Kanwarjit
Published: August 2021

In this paper, grid-connected photovoltaic-wind energy, including a battery energy storage system (BESS) with a novel topology base proposed controller, is presented. The battery can be reflected in a smooth and stable output under variation of weather and load conditions for the grid-connected system. Robust phase-locked loop- (PLL) based hybrid Voltage Source Converter (VSC) controller is designed to enhance power quality (PQ) with mitigating power fluctuation at DC-link by applied BESS on the DC side. The results can be summarized in 2 stages; in the 1st stage, the performance of the designed hybrid system can be analyzed with untuned parameters of the converter, and in the 2nd stage, a simple strategy base proposed controller to improve the operation stability and analyze the PQ of the hybrid power generating (HPG) system is developed. Finally, the proposed hybrid system is modeled in MATLAB/Simulink and the simulation results as obtained are compared with an existing controller.

HIGHLIGHTS

Performance analysis of design a grid connected hybrid power generating system

The system achieved stability and reliability with proposed controllers

The presence of a battery, providing smooth movement of the generated power of the system

A coordinated controller designed to improve power fluctuation and power quality

Highly robust grid-connected HPG system designed using hybrid VSC and bidirectional controller

GRAPHICAL ABSTRACT
The Effect of Carboxymethyl Glucomannan Concentration on the Properties of Glucomannan-Chitosan Hydrogel for Lactobacillus acidophilus FNCC 0051 Encapsulation
Authors: APRILIA Veriani , MURDIATI Agnes , HASTUTI Pudji , HARMAYANI Eni
Published: August 2021

The effect of porang (Amorphophallus oncophyllus) glucomannan concentration on the properties of glucomannan-chitosan hydrogel was investigated for Lactobacillus acidophilus FNCC 0051 encapsulation. The spherical shape with a continuous surface of the particle was self-assembly formed. The increase of glucomannan concentration from 0.3 to 0.9 % smoothly increased their small particle size from 1.08 ± 0.02 µm to 2.12 ± 0.00 µm and no significant change on the positive zeta potential values. The polydispersity indexes with the value between 0.4 to 0.5 were categorized as uniform particles. However, these values were higher compared to other studies which used konjac glucomannan-chitosan as the hydrogel materials. The encapsulation study with Lactobacillus acidophilus FNCC 0051 showed that the highest value was achieved when the same ratio of glucomannan and chitosan was applied (0.5 %). The viability study proved the perfect protection of hydrogel during 56 days of cold storage and pasteurization treatment with the cell viabilities of 100 % and 58.13 ± 18.5 %, respectively.

HIGHLIGHTS

Glucomannan concentration influenced particle size and encapsulation efficiency of hydrogel

Hydrogel was potential as acidophilus carrier in the gut due to its pH sensitivity

Hydrogel had continuous surface to provide a stronger physical barrier for the acidophilus against harsh environment

Hydrogel proved well protection of acidophilus during pasteurization and cold storage

GRAPHICAL ABSTRACT
Estimation of Optimum Moisture Content and Maximum Dry Unit Weight of Fine-Grained Soils using Numerical Methods
Authors: FONDJO Armand Augustin , THERON Elizabeth , RAY Richard P.
Published: August 2021

Soil compaction is one of the basic engineering techniques, which is carried out to guarantee the stability of soils dependent on specified strength. Nonetheless, in large-scale construction projects, the estimation of compaction features required tremendous effort and time that can be saved utilizing empirical relationships at the initial phases. It becomes critical to develop models to predict the compaction features, namely the maximum dry unit weight (γdmax) and optimum water content (WOP). This article attempts to develop models to predict the γdmax and WOP of fine-grained clay soils. Geotechnical tests such as grain size distribution, Atterberg limits, specific gravity, and proctor compaction tests are performed to assess soil samples' physical and hyro-mechanical characteristics. Multivariate analysis is conducted using MINITAB 18 software to develop the predictive models. The validation process of developed models includes the determination coefficient, probability value (p-value), comparison of the predicted values with experimental values, comparison of the models proposed in this study with other existing models found in the recent literature, and employing a different soil data set. The predicted values obtained from the models proposed in this research project are more accurate than other models developed recently. The proposed models estimate the compaction features of fine-grained clay soils with acceptable precision.

HIGHLIGHTS

Soil compaction is one of the basic engineering techniques perform to guarantee the stability of soils dependent on specified strength

In large-scale construction projects, the estimation of compaction parameters required tremendous effort and time that can be saved utilizing empirical relationships at the initial phases

This study has developed semi-empirical models to predict the compaction parameters (maximum dry unit weight and optimum water content) of fine-grained soils

GRAPHICAL ABSTRACT
Study of the Contact Thermal Compression Behavior of Copper using Scanning Contact Potentiometry Method and Finite Element Analysis
Authors: ABU GHAZAL Ayman , ALKHDOUR Sara , HUSEIN Yousef , SURIN Vitaly , AL-MALKAWI Ghadeer , BULBUL Raed , SHATNAWI Khaled
Published: August 2021

The issue of tracking residual stresses initiation in welding copper under various affected conditions is essential in increasing safety through improving the welding quality in particular, in the nuclear industry. This study investigated the behavior of welded copper numerically and experimentally under contact-heating compression test with constant clamping force. The scanning contact potentiometry (SCP) method was used to track the initiation and development of residual stresses within the weld zone. Furthermore, the finite element analysis (FEA) method was used to simulate and study the effect of thermal variations, with a constant compressive force, on mechanical factors that contribute to residual stresses formation within the weld zone. Additionally, scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) were used to get further information about the topography and composition of the specimen's surface. SCP results show that residual stress initiated from within the volume after 200 °C, and with further oxidation, its formation began on the surface after 250 °C. Using the relationship between maximum values of linearized von Mises stresses and maximum values of ADS at high SLS = 4.523, it was found that residual stresses generation began after 150 °C within the weld zone, and thermal stresses linearly increase with temperature due to further thermal expansion, which is associated with variation in linearized von Mises stresses and ADS maximum values. Comparison between potentiograms after 300 °C and FEA results have shown that the distribution of von Mises stress, normal stress, and total deformation are matching those in the distribution of ADS and are localized within the weld zone.

HIGHLIGHTS

The behavior of welded copper under compression at medium-low temperature range

Residual stresses detection at an early stage localized within weldment zone

Residual stresses increase with increased oxidation at copper surface

Matched the SCP Experimental and FEA simulation results

GRAPHICAL ABSTRACT
Preparation of Activated Carbon from Bagasse by Microwave-Assisted Phosphoric Acid Activation
Authors: SINYOUNG Suthatip , CHAIWAT Weerawut , KUNCHARIYAKUN Kittipong
Published: August 2021

This research focuses on the utilization of bagasse as activated carbon (AC) under microwave-assisted phosphoric acid activation. The AC was activated using various frequencies of microwave energy combined with phosphoric acid before the carbonization process. Results indicated that the AC obtained from bagasse under microwave-assisted phosphoric acid had improved properties, i.e. fixed carbon, surface area, and iodine adsorption capacity. However, the loss of AC properties could be attributed to microwave energy exceeding a limit of 800 W. The optimum activated condition in this research was the use of microwave energy 500 W assisted phosphoric acid, which had fixed carbon, surface area, and iodine adsorption capacity at 88.34 ± 0.67 %, 781 m2/g, and 852 ± 6.0 mg/g, respectively.

HIGHLIGHTS

Microwave energy and phosphoric acid is applied to pretreat bagasse

Bagasse pretreatment by microwave-assisted H3PO4 enhances the properties of AC

Optimum condition is pretreatment by phosphoric acid and microwave energy at 500 W

GRAPHICAL ABSTRACT
Anti-inflammatory and Anti-arthritic Potentials of Maesa Montana Roots
Authors: SHARMIN Sanjida , JHUMA Rabeya Gazi , ISLAM Sanjida , KHATUN Riniara
Published: August 2021

Maesa Montana is a flowering plant of the Myrsinaceae family, which is locally known as ramjani. The current study aimed to evaluate the in-vitro anti-arthritic and anti-inflammatory activities of the root extract of this plant. The anti-inflammatory performances were measured by the hindrance of egg white denaturation, and anti-arthritic activity was investigated by Bovine serum protein. In the anti-inflammatory activity test, the methanolic root extract of this plant showed 69.29 ± 1.19 % of inhibition at a concentration of 1000 µg/mL and standard drug exhibited 90.11 ± 1.45 % of inhibition at the same concentration. Furthermore, in the anti-arthritic activity test, the extract demonstrated 68.18 ± 1.34 % of inhibition at a concentration of 1000 µg/mL whereas the standard diclofenac drug showed 90.65 ± 1.19 % of inhibition at the same concentration. These results revealed that the root extract of this plant possesses significant anti-arthritic and anti-inflammatory activities based on the inhibition of BSA and protein denaturation.
HIGHLIGHTS

Methanol soluble compounds extraction from the roots of Maesa Montana
Anti-inflammatory activity determination using egg albumin
Anti-arthritic activity measurement using bovine serum albumin

GRAPHICAL ABSTRACT
Cinema e ensino de ciências na educação de jovens e adultos em Parnaiba, PI, Brasil
Authors:   Universidade Federal do Piauí, Brazil, MORAES Joseline A. , CAMPOS Francilene L. ,   Universidade Federal do Delta do Parnaiba, Brazil
Published: August 2021

O presente artigo descreve a Educação de Jovens e Adultos em escolas públicas do município de Parnaíba-PI, Brasil, na zona rural e urbana. Foi desenvolvida uma entrevista com estes alunos através de questões objetivas e subjetivas a fim de conhecê-los e identificar as possíveis dificuldades quanto aos conteúdos no ensino de ciências e a melhor didática de se trabalhar para solução dos problemas. A estratégia evidenciada como facilitador no processo de ensino aprendizagem pelos próprios discentes foi o uso de recurso didático áudio visual. Na zona rural foi aplicado vídeo-aula sobre “as características dos seres vivos” e na zona urbana um documentário “viagem pelo corpo humano”. Em se tratando dos recursos utilizados para facilitar o ensino aprendizagem, o filme foi considerado eficaz na transmissão do conhecimento.
Desarrollo de competencias digitales a partir del uso de vídeos didácticos
Authors:   Universidad del Magdalena, Colombia, BOLAÑO Matilde , CARDENAS Erika T. ,   Universidad del Magdalena, Colombia, URIBE Cristhian ,   Universidad del Magdalena, Colombia
Published: August 2021

Las exigencias educativas requieren del desarrollo de ciertas competencias digitales. Desde esta perspectiva se propuso evaluar el uso de los vídeos didácticos para el fortalecimiento de las competencias digitales en los estudiantes de media técnica de la ciudad de Santa Marta, Colombia. Metodológicamente se orientó con un enfoque positivista, cuantitativo con diseño cuasiexperimental. Como resultado el grupo experimental mejoró el nivel de desarrollo cognoscitivo, mientras que el control no presentó mejoría significativa. Concluyendo la efectividad del uso de video didácticos.
The Development of Cooperation Model for Protection and Care for Students under the Office of the Thailand Basic Education Commission
Authors:   Valaya Alongkorn Rajabhat University, Thailand, WONGSIRASAWAT Chanchai , PUPAT Phadungchai ,   King Mongkut's Institute of Technology Ladkrabang, Thailand, BHAWANGKANANTHA Thira ,   Office of the Basic Education Commission (OBEC), Thailand
Published: August 2021

This paper reports the development of cooperation model for protection and care for students under The Thailand Office of the Basic Education Commission (OBEC). Consistent of 4 parts as follows: 1) background, concepts and the objectives of the model 2) model's components in three levels as the policy, the driven forced, and operating level 3) guidelines for using this model and 4) conditions for success. Experts have the overall opinion that the model is accurate, appropriate, feasible and useful
Confirmatory factor analysis of head of department’s functional competencies development: a case study in the secondary schools inThailand
Authors:   King Mongkut’s Institute of Technology Ladkrabang, Thailand, AEBSAPAP Teerasak , PARIYAPORN Tungkunanan ,   King Mongkut’s Institute of Technology Ladkrabang, Thailand, BOONCHAN Sisan ,   King Mongkut’s Institute of Technology Ladkrabang, Thailand
Published: August 2021

Functional competencies of Head of Department has been paid attention to because for a school in Thailand, the head of each department, is very important. However, the issue is the appointment of a teacher who does not have any prior proper training before. This may cause such a teacher to have incomplete functional competencies. Therefore, it is necessary to develop the functional competencies of the Head of Department. This research focuses on the components of the functional competencies of the Head of Department of secondary schools under the Office of the Basic Education Commission. As for this study, from the review on a great number of related literature, it can be granted that functional competencies of the Head of Department of secondary schools under the Office of the Basic Education Commission can be grouped as follows: 1) Intellectual Leadership 2) Quality Management 3) Educational Innovation and Information Technology 4) Professionalism Development 5) Curriculum, Measurement and Evaluation of Learning 6) Learning Organization and 7) Professional Ethic. These seven dimensions are then examined using Confirmatory Factor Analysis, which shows the congruence with the empirical studies.
Aprendizagem baseada em equipe: Uma proposta para o ensino de matemática financeira
Authors:   Instituto Federal do Espírito Santo, Brazil, ANDRADE Allana M. , Da SILVA Antonio E. ,   Instituto Federal do Espírito Santo, Brazil, SEGATTO Breno R. ,   Universidade Federal do Espirito Santo, Brazil
Published: August 2021

No presente artigo apresentamos uma proposta de intervenção pedagógica com a metodologia de aprendizagem baseada em equipes (Team-Based Learning - TBL) para o ensino/aprendizagem da disciplina matemática financeira de um curso técnico de administração integrado ao ensino médio. A proposta baseou-se em uma investigação teórica de natureza exploratória com abordagem qualitativa, sendo feita a análise da prática dessa metodologia na literatura. Os resultados encontrados apontam para a eficiência do método do desenvolvimento do trabalho em equipe para uma efetiva aprendizagem significativa.
Diagnóstico de la competencia digital de los futuros docentes como catalizadores del aprendizaje en el marco de la enseñanza de ELE en la Escuela Normal Superior de Yaundé, Camerún
Authors:   Universidad de Lleida. España, NGAH Marguerite Y. , Del ARCO Isabel ,   Universidad de Lleida. España, FLORES Oscar ,   Universidad de Lleida. España
Published: August 2021

Esta investigación es un estudio no experimental, descriptivo con un diseño mixto cuantitativo-cualitativo. Pretende diagnosticar el nivel de competencia digital de los futuros docentes ELE de formación inicial en la Escuela Normal Superior de Yaundé, Camerún. Como catalizadores de aprendizaje, los estudiantes tienen un nivel intermedio de competencia digital. Tienen dificultades sobre la pedagogía del uso de las Tecnologías de la Información y la Comunicación (TIC) en la educación. Abogan por la innovación de las metodologías de enseñanza-aprendizaje, la infraestructura y la formación continua.
General Modulation Transfer Function Fitting Equation for Human Eye with Contact Lens
Authors:   Dept. of Physics, College of Education, Mustansiriyah University, Baghdad, Iraq, Zainulabdeen Faten Sh. , Hussein Mohammed A. ,   Dept. of Electrical Engineering, University of Technology, Baghdad, Iraq, AL-Hamdani Ail H. ,   Laser and Optoelectronics Engineering Dept. University of Technology, Baghdad, Iraq
Published: August 2021

In this research, a general equation was derived to represent the modulation transfer function (MTF) of the human eye with the presence of the contact lenses (CL) and during the vision with monochrome or multi-wavelength (polychromatic) light. This equation was used to fit the MTF's curves for the eye with pupil diameters (EPD) (2.5, 4, 6, and 8 mm). The fitting equation accuracy was revealed by using the standard deviation (STD). The results indicated that the image MTF is sensitive to (EPD). Moreover, eye vision degrades as (EPD) increases due to the increased spherical and chromatic aberrations. The new equation consists of two exponential terms in addition to a correction polynomial function (H) to fit the EPD effect. The results showed that H function with power two is sufficient to give a good accuracy when the EPD is less than 4 mm, while H with power five is necessary when the EPD is larger or equal to 5 mm. The equation gives a high accuracy also in the case of vision with white light for the eye with a contact lens.
Geology of Bajalia Anticline of the Low Folded Zone of Iraq
Authors:   University of Basrah, College of Science, Abdulnaby Wathiq Ghazi , Mahdi Maher Mandeel ,   University of Basrah, College of Science, Al-Muhamed Rafed Abd ,   University of Basrah, College of Science, Darweesh Nagham Adil ,   University of Basrah, College of Science, Hashoosh ِAhmed Muhsen ,   Ministry of Water Resources, Maysan Governorate
Published: August 2021

Bajalia Anticline is located about 60km northeast of central Amarah city in Al-Teeb area near Iraq-Iran border. Field and laboratory works were conducted to study topography, geomorphology, stratigraphy, and structural geology of Bajalia Anticline. The Anticline has a longitudinal shape with about 29km in length and 5-7km in width. Injana, Mukdadiya, and Bai Hassan formations are the three formations that were recognized in the study area. The geometrical structural analysis depicts that the Anticline is non-cylindrical, asymmetrical, close, sub-horizontal, steeply inclined, and linear fold. Most of the fractures in the Anticline are joints. These joints were classified based on the tectonics axes, which are a, b, and c, into ac, bc, and hol. A major reverse fault is located at the margin of the southwestern limb parallel to the fold axis with about 25km length. This fault is responsible on the vergence of the Anticline and overturned part of the southwestern limb. The Anticline was formed as a result of the collision between the Arabian and Iranian plates during the Late Tertiary. The maximum stress axis, which is caused by collision, is perpendicular to the hinge line. The geometrical and genetic classification indicates that the Anticline was formed by the high folding intensity and with a role of evaporites layers.
Flow Characterization Near the Nozzle Exit of the Supersonic Steam Jet Injecting into the Stagnant Water
Authors:   Institute of Engineering and Technology, Dept. of Hydraulics and Hydraulic and Pneumatic Systems, South Ural State University, Lenin Prospect 76, Chelyabinsk, 454080, Russian Federation., Khan Afrasyab , Sanaullah Khairuddin ,   Dept. of Chemical Engineering & Energy Sustainability, Faculty of Engineering, University Malaysia Sarawak (UNIMAS), 94300 Kota Samarahan, Sarawak, Malaysia., Zwawi Mohammed ,   Dept. of Mechanical Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia., Algarni Mohammed ,   Dept. of Mechanical Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia., Felemban Bassem F. ,   Mechanical Engineering Department, Taif University, Taif 26571, Saudi Arabia., Bahadar Ali ,   Dept. of Chemical and Materials Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia., Farooqi Ahmed Salam ,   Dept. of Chemical Engineering, Universiti Teknologi Petronas, Bandar Seri Iskandar, 32610, Perak, Malaysia., Henry Rigit Andrew Ragai ,   Dept. of Mechanical and Manufacturing Engineering, Faculty of Engineering, University Malaysia Sarawak (Unimas), 94300 Kota Samarahan, Sarawak, Malaysia., Ullah Atta ,   Dept. of Chemical Engineering, Pakistan Institute of Engineering & Applied Sciences (PIEAS), Nilor, Islamabad, Pakistan.
Published: August 2021

There has been a large amount of work being conducted on the thermo-dynamics of the Direct Contact Condensation (DCC), however, not much attention was given to the phenomena particularly active near the steam’s nozzle exit. A transparent rectangular upright duct of 4 ft high, was built with a supersonic nozzle positioned at the bottom of the channel to characterize flow behavior near the steam nozzle’s exit. Particle image velocimetry (PIV) was applied to draw information on the steam’s jet penetration into the water as well as the entrainment and mixing between the two phases under the steam’s inlet pressure ranging from 1.5 – 3.0 bars. PIV normalized contour measurements depicted not appreciable changes in the radial velocity of the jet. Whereas, in the core region of the jet, the change in the jet’s velocity was not much till Y/De ~ 4.3 and the vertical velocity of the jet decreased slowly till Y/De ~ 8. The jet’s normalized upward velocity attained an optimized value between Y/De ~ 8 and Y/De ~ 9.8. With varying pressures, 1.5 bars to 3.0 bars, the jet expanded radially in water. It was also found in the near nozzle exit region, the shear layer’s thickness remained within 0.2 – 0.5 De over the 1.5 – 3.0 bars pressure. Probability Density Function (PDF) analysis of Reynolds shear and normal stresses confirmed the existence of the velocity fluctuations across the shear layer, owing to the large eddies across the steam-water interface.
Multi-attribute interactive visualization of three-dimensional trajectory sets
Authors:   School of Journalism and Communication, Tsinghua University, Beijing, China, He Jing , Chen Haonan ,   College of Geoscience and Surveying Engineering, China University of Mining and Technology-Beijing, Beijing, China
Published: August 2021

Rapidly advancing location-awareness technologies and services have collected and stored massive amounts of moving object trajectory data with attribute information that involves various degrees of spatial scales, timescales, and levels of complexity. Unfortunately, interesting behaviors regarding combinations of attributes are scarcely extracted from datasets. Further, trajectories are typically dependent on the environment of three-dimensional space, and another issue of interest to us is to preserve spatial-location visualization while guaranteeing the description of temporal information. Therefore, we developed a novel analytics tool that combines visual and interactive components to enable a dynamic visualization of three-dimensional trajectory multi-attribute behaviors. Under the context of spatiotemporal analysis, this approach integrates multiple attributes into one view to efficiently explore the attribute visualization problem of multi-attribute combination without over-plotting. To assess the feasibility of our solution, we visualized and analyzed multi-attribute information of moving object trajectories using a real mining truck dataset as a case study.
Prevalence of resistant Staphylococcus aureus strains in frozen meat and their control using phytosynthesized selenium nanoparticles
Authors:   College of Science and Humanitarian Studies, Shaqra University, Quwaiiyah 11971, Saudi Arabia, Al-Saggaf Mohammed S.
Published: August 2021

Staphylococcus aureus continually threatens the safety of meat products, especially the multidrug-resistant (MDR) strains. The screening of MDR S. aureus prevalence in marketed meat products in Saudi Arabia was conducted via molecular identification of resistance genes (cfr, gyrA, and gyrB) that occurred in isolated bacteria. The green phytosynthesis of selenium nanoparticles (Se-NPs) was also conducted, using the fruits’ extract of Phyllanthus Emblica (PeE), for their evaluation as antibacterial nanocomposites against MDR S. aureus isolates. The prevalence percentage (PP) of S. aureus in meat samples was 14.2%, where the MDR S. aureus prevalence was 9.2%. The highest prevalence of S. aureus isolates was attained from minced meat samples, whereas the highest PP for multidrug-resistant (MDR) S. aureus was recorded from sausages samples. The PeE-synthesized Se-NPs had negative charges, spherical shapes, and well-disperssion with mean diameters of 11.98 nm. The anti- S. aureus activities of PeE, phytosynthesized Se-NPs, and their composite (PeE/Se-NPs) were proved qualitatively and quantitatively against the different standard and MDR strains, the antibacterial action of PeE/Se-NPs was the strongest. The treatment of MDR S. aureus with PeE/Se-NPs led to severe cells’ lyses/explosion after 8 h of exposure. The nanocomposites from PeE/Se-NPs are recommended for controlling MDR S. aureus in meat.
Sampling plans using extended EWMA statistic with and without auxiliary information
Authors:   Dept. of Statistics, National College of Business Administration and Economics, Lahore,54660, Pakistan., Naveed Muhammad , Azam Muhammad ,   Dept. of Statistics and Computer Science, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan., Saeed Muhammad ,   Dept. of Statistics, Minhaj University, Lahore,54770, Pakistan., Khan Nasrullah ,   Dept. of Statistics, College of Veterinary and Animal Sciences (Jhang Campus), Jhang 35200, Pakistan., Aslam Muhammad ,   Dept. of Statistics, Faculty of Science, King Abdulaziz University, Jeddah 21551, Saudi Arabia.
Published: August 2021

In this paper, we propose an Acceptance Sampling Plan (ASP) using the statistic suggested by Naveed et al. (2018) under the condition of known and unknown population standard deviation (SD) for the presence of with and without Auxiliary Information (AI). It is presumed that the study variable of quality trait and AI follow the bivariate normal distribution. The plan parameters of the recommended plan are discussed for all four cases under the constraint that specified producer and consumer risks are gratified. The suggested plan is compared in terms of sample size (SS) with numerous existing plans and showed that the presented plan has a smaller SS for any value of AQL, LQL. Various tables of plan parameters have been erected using various combinations of smoothing constants for industrial use. For the workable purpose, the industrial example has also been examined. At last, concluding remarks are discussed.
O programa da Residência Pedagógica e a importância da dimensão profissional para o ensino de Química
Authors: Soares Elane Chaveiro
Published: August 2021

Aperfeiçoar a formação de professores de Química, por meio do desenvolvimento de projetos e ações que pudessem fortalecer o campo da prática, e conduzir o licenciando para o exercício reflexivo da relação entre teoria e prática profissional docente, utilizando, para isso, atividades diversas sobre o ensino e a aprendizagem escolar, entre outras didáticas e metodologias, imersos de forma continua, sistematizada, orientada e coordenada, foram os alvos do projeto da residência pedagógica em Química do curso de Licenciatura em Química da Universidade Federal de Mato Grosso – Brasil, desenvolvido no período de agosto de  2018 a janeiro de 2020. Neste artigo, apresentamos e dicutimos essa experiência, com foco na transformação da noção de processo formativo, tanto para o licenciando, quanto para a instituição formadora, que se fundamentou na epistemologia da prática para transformar o conhecimento produzido através do estágio supervisionado. A realidade profissional gritou suas necessidades e estas puderam ser tratadas, discutidas, teorizadas, problematizadas a partir do programa da residência. Ao que tudo indica, o sucesso de uma formação inicial exitosa está no ambiente profissional (na escola) e não necessariamente na universidade.
Rating of Oxalate Ions of Various Fruits in Different Phases
Authors: Kamble B. S. , Acharya A. P. , Girhe B. E. , Salunkhe H. J.
Published: August 2021

The oxalate content of Beet, Sweet Potato, Tomato, Guava, Sapatofruits at different phases of raw, semi ripening and ripening were found out by permanganometric method. Oxalate rich foods are usually restricted to some degree, particularly in patients with high urinary oxalate level. During ripening of Beet, Sweet Potato, Tomato, Guava, Sapatofruits; the oxalate content increases progressively and the fully ripe fruit has the maximum oxalate content. Oxalate form an insoluble complex with calcium in the urine, or hyper-oxaluria, is even more important to stone formation than high levels of calcium or hyper-calcicuria. Excessive intake of food and drink containing oxalate leads to calcium oxalate stone. Also, excessive intake of vitamin C which metabolized to oxalate may lead to hyper-calcicuria and an increase in stone formation. Pain medications can be prescribed for symptom relief. Surgical techniques have also been developed to remove kidney stones. This in turn will provide an advice to take semi ripened fruits always balancing the taste of the fruit and physiological effect of affecting the kindney by oxalate content.
O USO DE HORTAS ESCOLARES COMO ESTRATÉGIA DE ENSINO: UMA ANÁLISE DA PRODUÇÃO ACADÊMICA DE MESTRADOS PROFISSIONAIS EM ENSINO DE CIÊNCIAS (2010-2019)
Authors: Araújo Laudyson de Jesus Bonfim , Silva Marivana Borges , Freitas Lilliane Miranda
Published: August 2021

Introdução: A expansão dos programas de pós-graduação, especificamente na área do Ensino de Ciências (EC), visando atender às novas demandas de qualificação e a formação continuada dos profissionais em educação, especialmente da educação básica, promoveu considerável volume de produções oriundas de Mestrados Profissionais (MP) em Ensino de Ciências favorecendo a necessidade da realização de pesquisas de caráter bibliográfico denominadas de “estado da arte” ou “estado do conhecimento” para analisar os trabalhos e auxiliar na disseminação da produção acadêmica dos MP. Objetivo: Promover a análise e discussão das produções oriundas de Mestrados Profissionais em Ensino de Ciências que utilizaram as hortas escolares como estratégia de ensino de ciências nas escolas. Material e métodos: A investigação partiu de uma pesquisa bibliográfica do tipo Estado da Arte fundamentada em abordagens de natureza quali/quantitativa, que identificou dezenove trabalhos acadêmicos que utilizaram as hortas escolares como estratégia para o ensino de ciências, a partir da análise de 1017 dissertações de Mestrado Profissional defendidas no período (2010-2019). Resultados: Na análise das dissertações, observou-se a contribuição das hortas escolares, sob a ótica do descritor “Recurso didático-metodológico”, na práxis do ensino de ciências com destaque para o uso da atividade prática que demonstrou que as hortas escolares podem ser inseridas de forma segura no planejamento das aulas. A pesquisa identificou a preferência por explorar o tema dentro do ensino fundamental maior (6º ao 9º ano), cujo conteúdo curricular pode figurar como facilitador da discussão juntamente com maior probabilidade de participação efetiva dos discentes. Destacou-se ainda que o tema horta nas escolas não foi registrado em dissertações de Mestrados Profissionais em IES da região Norte. Este fato preocupa, tendo em vista a relevância da região por estar inserida num contexto socioambiental importantíssimo. Conclusão: Concluímos que o uso das hortas escolares como espaços interdisciplinares são viáveis para o ensino de ciências em todos os níveis de ensino e ao alcance de qualquer escola, e que podem ser usados também para a formação continuada de professores.
A trajetória intelectual de Ruy Mauro Marini: notas sobre “estruturas de sentimentos” e o pensamento crítico latino-americano
Authors: Ribeiro Adelia Maria Miglievich , Tomaz Fernandes Vinìcius
Published: August 2021

Trazemos aqui a história de vida de Ruy Mauro Marini, intelectual orgânico nos termos gramscianos e um dos principais formuladores da Teoria Marxista da Dependência. Ao eleger Ruy Mauro Marini, nosso intento foi estudar a atmosfera de mudanças experimentada por uma específica geração latino-americana, quando ainda se forjava a utopia da realização do socialismo e da vitória sobre o imperialismo, paradoxalmente, em tempos de repressão política. Para tal, fazemos uso do conceito de “estruturas de sentimentos”, de Raymond Williams, propositor do materialismo cultural que insere o debate da cultura como lócus da luta política no marxismo. No exame de trajetórias de vida de pessoas e grupos enredados na biografia de Marini, descobrimos a configuração da unidade concreta das experiências sentidas pelos intelectuais críticos em sua resistência no exílio. A pesquisa leva-nos a concluir acerca de uma contra-hegemonia verificada na consciência prática de uma rede de intelectuais que fez germinar uma das mais férteis criações teóricas a partir da periferia e participa do empenho maior de se remapear as trajetórias destes indivíduos e círculos nos anos 1960-70 na América Latina.
THE THROWING VELOCITY AT DIFFERENT PHASES OF TEACHING HANDBALL ELEMENTS
Authors: Ohnjec Katarina , Hećimović Maja , Žindarec Čučković Ana
Published: August 2021

The aim of this research is to study the ball throwing velocity at different phases of teaching handball elements to female students in their first year of study at Faculty of Kinesiology, Zagreb. The set of variables contains three throwing velocity tests: 1. handball throwing velocity from the standing position (ST), 2. basic shot throwing velocity (RT) and 3. jump shot throwing velocity (JT). The speed of the ball was estimated by a radar gun (Stalker ATS) three times for each shooting type and it was expressed in km/h unit. Measuring was conducted twice in the course of the summer semester of the academic year 2017/2018. The first measuring was carried out after the first lesson and the second one a month later. The average throwing velocities recorded during the first measuring were: ST - 59.25 km/h, RT - 61.60 km/h and JT 61.62 km/h. On the following occasion, the average results were: 59.36 km/h (ST), 61.33 km/h (RT) and 61.33 km/h (JT). No statistically significant differences in the observed set of variables were found by using the t-test for the dependent samples on either occasion. The obtained results can be interpreted in regard to the methods of directing and evaluating the teaching process, as well as in regard to an effective program for improving explosive throwing power.
THE INTENSITY OF PHYSICAL ACTIVITY AND THE HEALTH-RELATED BEHAVIOUR OF UNIVERSITY STUDENTS OF SELECTED MAJORS
Authors: Kotarska Katarzyna , Paczynska-Jedrycka Malgorzata , Sygit Katarzyna , Sygit Marian , Nowak Maria Alicja
Published: August 2021

The health of a society is conditioned by healthy lifestyle choices. A significant role in shaping health-related behaviour is played by university students, who should be leaders in the scope of health in the future. Our aim was to determine the intensity of physical activities and their relation with the intensity of health-related behaviours of university students of selected majors. Our research covered 372 students of physical education (292) and social sciences (108) from Poznań and Szczecin. We applied Minnesota Leisure Time Physical Activity Questionnaire (MLTPAQ) and Health Behaviour Inventory (HBI). The relations between the level of physical activity (PA) and the health behaviour of the students were determined by intra-group correlations (r). The
value of p<0.05 was adopted as statistically significant. Physical education (PE) and public health (PH) students showed higher levels of PA and health behaviour as compared to the students of social sciences (SS). The total activity metabolic index (AMI) indicated a lower level of PA among women, regardless of major. PA [4; 6) MET of
tourism and recreation (T&R) students was highly and positively correlated with preventive behaviours (PB) (r=0.69). PA <4 MET of female T&R students and male PE students positively correlated with correct eating habits (CEH). We found negative correlations between PA ≥6 MET of female PE students and male PH students
[4-6) and ≥6 MET and health practices (HP), as well as PA [4-6 MET) of male PE students and positive mental attitude (PMA). Positive and negative correlations between free-time physical activity and health-related behaviours indicate the need for regular physical and health education of students. Physical activity, correct eating habits and preventive behaviour of students will increase their chances of promoting a healthy lifestyle in
society.
EXTERNAL FOCUS OF ATTENTION AFFECTS SHOT ACCURACY IN ELITE ARCHERS
Authors: Vrbik Andrea , Zavoreo Iris , Vrbik Ivan
Published: August 2021

The intention of this study was to find out if external focus of attention, steering the archers’ focus on distal movement effects, will provide better shooting accuracy expressed as higher number of 10 points and higher overall result. The subject sample was consisted of 10 elite male archers, with average age 25.8 years. The sample of variables was derived from observed characteristics of entities in different shooting conditions. A measure of arrow distance from the center of the target face was used in order to estimate shooting precision. The testing consisted of three different shooting conditions: C1- free focus of attention, C2 – internal focus of attention and C3 – external focus of attention. The analysis showed that the highest results were obtained in condition of externally oriented focus of attention (C3), and the lowest results in condition of internally oriented focus of attention (C2). Friedman’s ANOVA did not show statistical differences between the conditions, but they were found between C2 and C3 in afterwards administered Wilcoxon’s test (p=0.047).