bluuebunny/crossref_metadata_2025 huggingface dataset:
Um olhar sobre a pertinência de uma obra de introdução à análise de redes sociais
Authors: Viseu Sofia
Published: April 2021

A obra Redes Sociais. Como compreendê-las? Uma introdução à análise de redes sociais, publicada em língua portuguesa, vem recordar alguns destes princípios orientadores, oferecendo uma variedade considerável de capítulos de caráter introdutório e aplicado. De facto, nesta obra merecem ser destacados três aspetos que a tornam pertinente e oportuna.
Nuevo modelo de métricas responsables para medir el desempeño de revistas científicas en la construcción de comunidad: el caso de Redes.
Authors: Vélez-Cuartas Gabriel , Suárez-Tamayo Marcela , Jaramillo-Guevara Laura , Gutiérrez Gerardo
Published: April 2021

Se presenta un modelo de métricas responsables diseñado con el propósito de observar el desempeño de publicaciones para observar los aportes fundamentales de una publicación a la construcción de comunidad científica. Este estudio demuestra que la revista Redes ha sido nodal en la conformación de la comunidad luso e hispano parlante alrededor del ARS. Se hizo un trabajo de búsqueda, recuperación y normalización de todos los artículos y citas, desde 2002 hasta 2020, con datos de Google Scholar. El modelo diseñado da respuesta a dos preguntas: (1) A partir del cálculo del índice H, ¿cuáles son los factores que han permitido el crecimiento del impacto de la revista?; (2) ¿Cuáles han sido los aportes de la revista Redes en la constitución de pilares geográficos e institucionales para la expansión de la comunidad del ARS? El análisis de los resultados mostró que se ha dado un crecimiento paulatino de la comunidad luso e hispano parlante alrededor de la revista; el alcancé geográfico con más impacto se da en LAC y la península Ibérica, con un interesante crecimiento global, y que los usos de los artículos no son solo para la investigación, pues la formación tiene un peso importante.
Are leg electromyogram profiles in squat is symetrical? (Case study)
Authors: Kmiecik Krzysztof , Król Henryk , Sobota Grzegorz
Published: April 2021

The action of the central nervous system that controls neuromuscular functions reflect electromyograms (EMGs) profiles of muscle activity of the basic muscles. However, there seems to be a relationship between the EMGs profiles and the movement patterns (e.g., values of extremity joins angles). We want to find out how changes EMG profiles and movement patterns of the squat movement with increasing loads and especially we want to determine degree of symmetry of selected homologous muscles. Due to the lack of critical information addressing symmetry, we studied the EMG profiles of six homologous leg muscles (i.e. tibialis anterior, gastrocnemius, rectus femoris, biceps femoris, gluteus maximus and erector spinae) during squat movement depending on load size. For this purpose we checked the usefulness of the multimodular measuring system (SMART-E, BTS) and force plate Kistler. Smart Analyser software was used to create a database allowing the chosen EMG profiles and movement patterns to be compared. In this study participated eleven healthy man, however two were selected for analysis. The first of subject was 36 years (body mass 82 kg; body height 180 cm; 1RM in full squat 140 kg). The second one was 28 years (body mass 90 kg; body height 183 cm; 1RM in full squat 110 kg). The subjects performed consecutive sets of a single repetition of full squat with the increasing load (70, 80, 90 and 100% 1RM the anticipated maximum weight), until the appointment of one repetition maximum. For analysis, however, only samples with moderate and maximal loads (70% and 100% 1RM, respectively) were selected. The sum of the differences in normalized amplitude values of individual pairs of homologous muscles was taken as a measure of symmetry/asymmetry of the EMG profile. The load increase of the squat contributed to the increase asymmetry of the profiles of pairs homologous muscles of the lower extremities. Greater asymmetry of subject A.M. in a squat with a load of 100% 1RM resulted that the fluidity of the movement was worsened.
PHYSIOLOGICAL AND BIOCHEMICAL CHANGES IN ADOLESCENT JUDO ATHLETES CAUSED BY TRAINING DURING START PERIOD
Authors: Jaszczanin Jan , Przybylski Wojciech , Moska Waldemar , Kemeryte-Riaubiene Egle , Chruściński Grzegorz
Published: April 2021

Study aim: The goal of the present study was to estimate and compare dynamics of physical fitness indices of judo athletes and non-sporting persons aged 11-17 years during this stage ontogeny and their importance of the body’s functional adaptation.
Study material: The studies involved 47 judo athletes, 11–17 years old, who were divided into three age groups GP 11-13 years n=16; GP 14-15 years n=16; GP 16-17 years n=15, and 48 schoolchildren not involved in sports GK 11-13 years n=16; GK 14-15 years n=15; GK 16-17 years n=17. Aerobic and anaerobic capacity was studied in all groups. The initial studies were carried out in January and follow-up studies were conducted six months later.
Results: Power indicators increased in all groups, but judo athletes’ anaerobic capacity was significantly higher comparing to other groups. Judo athletes’ simulation fights resulted in increased La concentrations, pH changes, and heart rate alterations, whereas the level of changes depended on athletes’ age, training, and training experience. Comparison of maximum oxygen intake parameters of judo players and untrained children of the same age did not reveal significant differences between these groups. Wrestlers aged 12 and 16 years presented significantly higher anaerobic prevalence in comparison with untrained children. The differences indicate that anaerobic performance potential in older judo athletes (16 years old and above) is increased, which is reflected by a higher intensity and elevated exercise loads as well as training experience.
Conclusions: No significant differences were reported in terms of VO2 max between the study groups. The indicators of anaerobic performance of children training in judo (W/kg, W average /kg, Time achieved max power, Time to maintain max power) were significantly better in comparison with untrained peers. The maximum loads (Wingate test, especially in simulative judo fights) caused a significant increase in La levels accompanied by a decrease in pH in the chosen period of growth period.
ASSESSMENT OF MORPHOFUNCTIONAL CHANGES IN ELDERLY WOMEN PERFORMING NORDIC WALKING EXERCISE
Authors: Ignasiak Zofia , Nowak Alicja , Cichoń Dorota , Sebastjan Anna , Ignasiak Tomasz
Published: April 2021

Aim: the purpose of the research was an assessment of increased physical activity influence on selected elements of elderly women biological condition.
Basic procedures: the research material consisted of measurement data of 80 elderly women that were divided into two grups: active (n=31) which participated in a health training, and control (n=49). We measured: basic somaic features, BMI, WHR, BMD and functional physical fitness.
Results: analysed parameters of bone mineral density were slightly better of the physically active women in comparison to the unactive women. During analysis of physical fitness tests, active achieved decidedly higher results, which indicates positive influence of the nordic walking health training on functional physical fitness of elderly women.
Conclusions: Utilised health training was an optimal stimulus for the examined women – their functional physical fitness and BMD improved considerably. No similar changes were noted in the control group
Behaviouristic traditions in the relationship between psychology and pedagogy, with particular consideration of learning and teaching motor skills
Authors: Szymańska Elżbieta , Mleczko Edward , Supernat Katarzyna
Published: April 2021

Aim. In the study, the authors undertook the task of searching for reasons regarding the high impact of behavioural interpretation in behaviourism on theoretical assumptions and practical implications in the field of improving the process of learning and teaching motor (movement) skills.
Research questions. 1. To what extent did behavioural interpretation in behaviourism have influence on the formation of the theoretical foundations of didactics and the methodology of learning and teaching motor skills in physical education and in sport? 2. To what extent are the theoretical assumptions and practical implications of contemporary didactics in Poland based on the theoretical foundations of teaching and learning shaped in the 20th century under the influence of behaviourism?
Material and methods. The method of document analysis was used in the study. In the research on behaviourism and its influence on the didactics and methodology of physical education and sport, the following were taken into account: monographic studies, which were published by well-known Polish and foreign publishing houses and articles published in scientific journals indexed in reputable databases of scientific periodicals.
Results. 1. Analysis of selected documents showed great impact of various paradigms of behavioural interpretation in behaviourism on the dynamics of theoretical foundations and practical implications in terms of learning and teaching motor activities. 2. Despite the recognition of behaviourism in psychology as a historical field, in Poland, it still very clearly reveals itself in sport and physical education within the theory and practice of learning and teaching motor activities.
Conclusions. It would be wise to undertake research aimed at estimating the potential of cognitive psychology in the field of modernising the didactic process. 2. There is a need to look for reasons for conservatism in Polish didactics and methodology of learning and teaching motor skills and the basis for justifying necessary reforms in this aspect of school pedagogy and competitive sport.
KINEMATICS OF LOWER LIMBAND PELVIC WORK DURING RUNNING IN NEUTRAL AND MINIMALIST FOOTWEAR AMONG A GROUP OF HIGHLY QUALIFIED RUNNERS
Authors: Chwała Wiesław , Mirek Wacław , Klimek Andrzej , Mirek Krzysztof
Published: April 2021

Aim. The aim of the study is to characterise and compare the values of angle changes within the lower limb joints in the sagittal plane and spatial pelvic movements while running in minimalist and neutral footwear. Materials and methods. Research was carried out among a group of 13 participants (6 men and 7 women), highly qualified male and female athletes from the AZS AWF (University of Physical Education) Kraków club. Registration of the run and analysis of the results was performed using spatial motion analysis via the Vicon system with speeds at 3.94±0.45 m/s for men and 3.97±0.32 m/s for women, and 3.91±057 m/s and 4.1±0.36 m/s for men and women, respectively, in the group of highly qualified athletes. Results. At the initial point of foot contact with the ground, the minimalist footwear run was characterised by greater plantar flexion totalling about 5º compared to the run in neutral footwear. There was also a 8º higher value of dorsiflexion during the amortisation phase and a lower value by approx. 5º during the swing phase in this joint when running in minimalist footwear. In the knee joint, a value of about 6º higher flexion was observed during the amortisation phase when running in minimalist footwear. Differences in hip joint angle of approximately 6-8º were found during maximal extension of the joint during the final rebound phase. Spatial pelvic movements were similar during runs in both types of footwear. Conclusions. The obtained results indicate that some of the amortisation and driving force tasks are taken over by the sports footwear. During the run in minimalist footwear, a key role in the field of body amortisation is played by the increased range of knee flexion, while during the rebound phase, the increased range of hip joint extension predominates.
Diversion and sabotage - the essence and mutual relations
Authors: Lubiewski Paweł , Dróżdż Aneta
Published: April 2021

It is difficult to say whether there are more social conflicts nowadays than there used
to be centuries ago. We lack precise comparative data to rely on. However, it can be
said that we look at them much more carefully, analyze them, examine them to find
out about their essence, relations, and dependencies as much as possible. Unfortunately,
social conflicts often lead to military actions. They are characterized by the use
ofvarious tactics, including activities of an irregular nature. Considering the intensity
of terrorist activities not only in Europe, but also in many other places in the world,
and bearing in mind how willingly terrorist structures use irregular activities, it is worth
returning to the issues of diversion and sabotage, which seem to have been forgotten,
judging by the limited amount of literary resources available in this field, in the context
of improving the contemporary state security system.
Legal and organizational aspects of the functioning of Police Premises for Detained Persons and bringing people to them in order to sober up
Authors: Szymczyk Andrzej
Published: April 2021

This paper is devoted to legal and organizational regulations related to the functioning
of Police Premises for Detained Persons. The author presents solutions implemented
in this area, which have been included both in the acts of universally binding law as
well as in the legal acts of Police of an internal nature. The article analyzes the content
of selected provisions, pointing to both solutions which, when confronted with practice,
turned out to be ineffective, and those which resulted in increased safety of isolated
intoxicated people
This scope of systemic security of the Republic of Poland
Authors: Sambor Grzegorz
Published: April 2021

The Republic of Poland, like any other country, is exposed to a number of external
and internal threats. The rapidly changing geopolitical situation as well as civilisational
and technological development are creating new threats in the sphere of internal stability
of a state, whose condition affects not only its institutions, but also its citizens and international
relations. As we known, the concept of state includes the following three
elements: a particular territory, the population living on that territory and a sovereign
power (government) of supreme authority. Since systemic security is linked to the third
of these elements, undoubtedly its preservation is important for the existence of the State
Development of Moringa OleiferaLAM. seedlings in different substrates
Authors: Rebelo  Pimentel Neisiany , Pauletto Daniela , Fernandes  da  Silva Àdria , Gomes  da  Silva  Oliveira Thiago , da Silva Brito Orlanilson
Published: April 2021

Moringa oleiferaLam., known as moringa, is an arboreal plant belonging to the Moringaceae family, native to India,and has a high capacity to adapt to climatic conditions and arid soils. In this study we evaluated the initial development of seedlings of M. oleiferaLam. under different substrates conditions. The experiment was conducted in a completely randomized design, consisting of eight treatments resulting from combinations of the base substrate (85% soil, 3% carbonized rice straw and 12% coconut fiber). At 60 days after sowing, plant height, stem diameter, dry mass of the aerial part and root system, total dry mass were evaluated, in addition to the Dickson quality index (IQD). The best seedling growth occurred using the combination of 20% poultry litter and 10% bovine manure. Seedlings produced with substrates formulated with 20% poultry litter and 10% bovine manure showed gains in the evaluated variables, which could be a viable alternative for the production of moringa seedlings.
Evaluation of eggplant and gilo genotypes and interspecific hybrids as to root-knot nematode resistance
Authors: Borges  Pinheiro Jadir , Olegario  da  Silva Giovani , Gomes  de  Jesus Jhenef , Biscaia Danielle , Augusto de Castro e Melo Raphael
Published: April 2021

In Brazil, eggplant and gilo are important for the economy of small-scale farms located mainly in the southeast states and other regions, with a significant production volume year-round in the wholesale local markets. However, these species are very susceptible to root-knot nematodes, and there are few or almost none known sources of resistance. The objective of this studywas to prospect sources of resistance to root-knot nematodesin eggplant, scarlet eggplant (gilo), as well in interspecific hybrids between these species and with wildSolanumspecies, to be used as rootstocks. In the first experiment, in 2013,10 eggplant accessions, a hybrid between eggplant andgilo, and a Solanum stramonifoliumxeggplanthybrid, were evalu41atedfor theirreaction to Meloidogyne enterolobii. In the second, in 2016, 20 accessions of gilowere evaluated for their reaction to M. incognita, M. javanica,and M. enterolobii.. And in the third experiment,in 2017,one access and two experimental eggplant hybrids, and one Solanum scuticumx eggplant hybrid, were evaluated for their reaction to M. incognita, and M. enterolobii. All the trials were stablished inagreenhouse, and characters related to root infection were evaluated in a completely randomized design with six replications of one plant per pot, usinga 1.5 L pots filled with a mixedsubstrate inoculated with each nematode species.Itwas found thatall eggplant accessions were susceptible to M. incognitaand M. enterolobii, however, BER 3150 presented lower susceptibility to M. incognita. The gilogenotypes CNPH 056, CNPH 070, CNPH 220,and CNPH 363 shownbetter response to M. incognitaand M. javanicathan the susceptibility pattern, the tomato 'Rutgers'. Other giloaccessions CNPH 070, CNPH 219,and CNPH 387 showed better or equivalent response thanthe resistant tomato 'Nemadoro' for M. enterolobii.4-the BER EG203 x S. scuticuminterspecific hybrid can be recommended as a rootstock for eggplant susceptible to M. incognita, as well the wild S. stramonifoliumvar. inerme species for M. enterolobii.
DE INSTITUIÇÃO PSIQUIÁTRICA A CEMITÉRIO: PERSCRUTANDO A FUNDAÇÃO E TRANSFORMAÇÃO DO ABRIGO MUNICIPAL DE ALIENADOS OSCAR SCHNEIDER
Authors: Pasqualotto Mariana Zabot , Zanella Andrea Vieira
Published: April 2021

Neste artigo, busca-se relatar a experiência de uma pesquisa que se debruçou sobre as memórias invisibilizadas de um cemitério da cidade de Joinville, Estado de Santa Catarina, cuja história de seu território está ligada àexistência, no passado, de duas instituições de confinamento de sujeitos infames: um Abrigo de Alienados (1923-1942) e um Presídio Político (1942-1945). A escuta dos personagens que narram suas experiências com esse local e as estratégias do flâneur como forma de deixar-se levar na busca pelas memórias por aquilo em que se configuram sentidos foram os fundamentos do exercício de “ficcionar” sobre esse determinado objeto de estudo, a partir de uma relação sensível com esse campo, uma “Cidade dos Mortos”, onde foi possível escutar as vozes que nele ainda pulsam e tensionam a história desse local e seu aparente estado de silêncio na cidade.
ADOLESCÊNCIA, ATO INFRACIONAL E MEDIDAS SOCIOEDUCATIVAS À LUZ DA PSICANÁLISE: UM ESTUDO DE REVISÃO SISTEMÁTICA DE LITERATURA
Authors: Rodrigues Sônia Wan Der Maas , Teixeira Leônia Cavalcante
Published: April 2021

Este estudo buscou compreender questões relacionadas à adolescência, ato infracional e medidas socioeducativas, tendo a psicanálise como orientação teórica. Para isso, realizou-se pesquisa em revistas indexadas nas bases de dados Pepsic, Scielo, Redalyc, Doaj e Lilacs, publicadas nacionalmente, no período de 2009 a 2014. Selecionou-se, inicialmente, 310 artigos que contivessem como descritores: adolescência, medidas socioeducativas, ato infracional e psicanálise. Destes, foram escolhidos 30 artigos após os critérios de exclusão. Os resultados categorizados pelas ênfases mostraram que o fenômeno dos adolescentes envolvidos em atos infracionais é complexo devido à sua multicausalidade e exige aprofundamento sobre adolescência,relações familiares, nuances do mundo contemporâneo e o acesso aos bens e ao consumo, também a saída do adolescente pelo ato infracional. A clínica psicanalítica, ao oferecer ao sujeito um espaço de escuta, colabora para a construção de novas formas de existência que não sejam pela via da transgressão à ordem social.
A MONOGAMIA EM KAREN HORNEY: CONSIDERAÇÕES ACERCA DAS CONSTRUÇÕES PSICANALÍTICAS SOBRE FEMINILIDADE
Authors: Amorim Patrícia Mafra , Belo Fábio Roberto Rodrigues
Published: April 2021

Este trabalho se propõe a investigar as contribuições da psicanalista KarenHorney para a compreensão dos relacionamentos amorosos. A autora nospareceu uma boa representante do que Laplanche sinaliza como recalquespresentes na teoria psicanalítica. Investigamos o desenrolar da psicologia doamor de Horney, com base na metodologia laplancheana de análise de textospsicanalíticos, buscando apontar seus méritos e deméritos na construção deuma teoria psicanalítica que é comprometida com as consequências políticasde suas elaborações. A monogamia, instituição hegemônica e que tende aser interpretada como natural em nossa sociedade ocidental, parece-nos ocampo ideal para a discussão proposta pela autora sobre o lugar designadoàs mulheres. Traçaremos, portanto, um raio vetor sobre o tema, observandoas diferentes formas pelas quais se repete na obra da autora. Colocando emquestão a forma como são constituídos os relacionamentos amorosos, faz-senecessária a abordagem das questões identificatórias e de gênero que osperpassam.
ENTRE O DESISTIR E O RESISTIR: NOTAS SOBRE O COTIDIANO DOCENTE NA EDUCAÇÃO SUPERIOR
Authors: Paulon Simone Mainieri , Cedraz Ariadne
Published: April 2021

O artigo intenta evidenciar uma dimensão sensível das práticaseducacionais, por meio de uma estilística não estandardizada de produçãode conhecimento. O texto-script permeia o fazer artístico de uma atriz, aomesmo tempo em que revela o palco-sala de aula onde se encena o fazerdocente, corporificando dilemas existenciais contemporâneos do trabalhocom educação. O exercício da escrita ficcional, como propõem Bottonie Costa, configura a estratégia metodológica que costura o estudo. Estaestratégia objetiva revelar paradoxos de uma prática profissional diantedo niilismo predominante que toma os corpos dos atores, no contextodefinido por Han como “sociedade do cansaço”. Como criar movimentos deresistência onde apenas parece haver cansaço? Como inventar linhas de fugaquando tudo parece convidar à desistência? Esses são os questionamentosque se insinuam ao longo do enredo, chamando à análise acerca do educarem tempos que não somente convidam à desistência, mas também incitamresistências.
Projeto de Extensão de Iniciação à Programação: uma experiência com jovens do agreste alagoano
Authors: Santos José Bruno Da Silva , Lima Emerson De Araújo
Published: April 2021

O presente artigo tem por objetivo relatar a experiência obtida no Projeto de Iniciação à Programação (PIP), ação de extensão vinculada ao Instituto Federal de Alagoas - IFAL Campus Palmeira dos Índios, tendo como público alvo jovens da Escola Municipal Antonio Caetano de Souza e Associação Lar e Família situados no município de igaci, pertencente ao agreste alagoano. O Projeto teve como objetivo o ensino de programação de uma forma simples de entendimento, além de incluir digitalmente seus participantes proporcionando novas experiências e desenvolvendo habilidades na área de computação.
Sistema Inteligente para auxílio na Avaliação e Intervenção de Doenças de Demência
Authors: Dotto Douglas , Frozza Rejane , Marion Daielle , Areosa Silvia Virginia   Coutinho , Kipper Liane  Mahlmann
Published: April 2021

Com o processo de rápido envelhecimento da população brasileira, é necessário repensar a forma de atendimento dos usuários idosos que utilizam o Sistema Único de Saúde (SUS), para que seja possível auxiliar na melhoria de qualidade do atendimento destes usuários. Esta pesquisa tem foco nas doenças de demência, especificamente na sua avaliação e intervenção, e também na área da computação. O objetivo é auxiliar na identificação de doenças de demência, a partir da combinação de sintomas existentes, assim como no resultado de testes padrão utilizados por profissionais da saúde. A pesquisa está em andamento e o sistema será desenvolvido para dispositivo móvel, a fim de facilitar o acesso por profissionais da área.
Uso de DNA-Barcoding no alinhamento e localização de Primers para o reconhecimento de cianobactérias
Authors: Sanmartin Victor , Frozza Rejane
Published: April 2021

A bioinformática é uma área que possui um grande destaque e vem ganhando ainda mais visibilidade para a previsão de doenças através do DNA. Desde que surgiu, a bioinformática sempre esteve diretamente associada à biologia molecular, campo da biologia responsável por estudar a estrutura e as funções do material genético, bem como as proteínas, que são os resultados obtidos em uma síntese de DNA. As técnicas de DNA-Barcoding e Aprendizado de Máquina tendem a ajudar ainda mais os pesquisadores da área, buscando por soluções rápidas e inteligentes. Assim, o objetivo desta pesquisa ainda em andamento, busca unir as técnicas de Barcoding e Aprendizado de Máquina para o sequenciamento e identificação de Cianobactérias.
Preparation and Thermal Properties of Hexadecanol-Myristic Acid Eutectics/ Activated Carbon Composites as Shape-stabilized Phase Change Materials in Thermal Energy Storage
Authors: CHEN Yanghua , WANG Zhaohe , GE Minrong , ZHAO Feng
Published: April 2021

In this study, hexadecanol-myristic acid (HD-MA) binary eutectic mixtures were adsorbed into activated carbon (AC) to prepare the composite phase transition materials(CPCMs). In the hexadecanol-myristic acid/activated carbon (HD-MA/AC) composites, the mixture of HD–MA acted as the phase change energy storage material and the AC was used as the matrix supporting material. Activated carbon is a kind of inorganic supporting material, which has developed pore structure, strong adsorption, high mechanical strength, corrosion resistance and good thermal stability. As the supporting material, activated carbon was helpful to prevent the eutectics from leakage. The chemical structure and crystal phase structure of HD-MA/AC composites were tested by FT-IR and XRD. The microstructure of the composites was observed through field emission scanning electron microscopy (FE-SEM). It was found that the organic binary eutectics were adsorbed on the surface and inside by activated carbon. Thermal properties of the composites were measured by differential scanning calorimetry (DSC). The results of performance test demonstrated that the satisfactory sample CPCM1 melted at 42.38 °C with latent heat of 76.24 J/g and solidified at 38.32 °C with latent heat of 67.08 J/g. The test results of TGA indicated that the prepared composites of hexadecanol-myristic acid/activated carbon possessed great thermal stability and high reliability. It is predicted that the shape-stabilized HD-MA/AC composites have great potential for thermal energy storage.
A Study of Recycling Process of Cobalt-based Conversion Coating Formed on Aluminium Alloys
Authors: MA Di , LI Shubai , YU Dongmei , WANG Bin , CHEN Zou , ZHOU Xiwen , XU Zhenzhen
Published: April 2021

In this study, the influence of different cyclic treatment and reuse process on the performance of the conversion film was systematically studied by electrochemical test, surface characterization and determination of cobalt ions in the conversion solution, and new technology of chemical conversion of cobalt salts in aluminum alloys were determined. Mode A indicated the practice of cyclical processing of the test object in the original conversion solution, in which components of the circulation liquid were consumed continuously. After the first cycle, the Ecorr and Rp were – 691.8 V and 63.5 kΩ. In the later time, Rp was just about 13.0 kΩ, and the corrosion resistance of conversion film degraded progressively. Mode B represented the practice of adding to the original solution before cyclical processing of the test object, so that volume of the solution remains unchanged, and components of the circulation liquid kept increasing. RP increased from 9.3 kΩ to the 69.9 kΩ at the beginning of the cycle, followed by a slow descent, and content of cobalt in the film was stable, also higher than that under model A. This demonstrates that mode A has high utilization of the cobalt in the conversion solution in the early recycling, whereas mode B can prolong the cyclic service life of the conversion solution in circulation. After adding oxidants, as NaClO3, NaBrO3, H2O2, NaClO, and KMnO4, to the circulation liquid before recycling, the reuse and recycle ratio of cobalt reaches up to 41.3 %, and Rp can be promoted to123.2 kΩ at most. The life of the recycling was prolonged, while the costs of chemical conversion of cobalt were reduced.
Thin Film Deposition: Solution Based Approach
Authors: Tufail Chaudhary Kashif
Published: April 2021

The wet chemical processing opens the way to deposit thin film with the versatility and ease for a variety of materials. Liquid film deposition involves the application of a liquid precursor on a substrate which is then converted to the required coating material in a subsequent post-treatment step. Different non-vacuum solution based deposition techniques have been developed to grow thin films with high efficiency and functionality. Spin coating is one of an effective technique for thin film fabrication due to low cost, uniformity, less hazardous, and capability of easy scaling up. The typical process involves depositing a small amount of a fluid onto the center of a substrate and then spinning the substrate at high speed. Dip coating is another simple, cost effective route with feasibility to scale-up for commercial production. The dip coating process can be divided into three important technical stages, immersion, withdrawal and evaporation. The coating may be subjected to further heat treatment in order to burn out residual compounds and induce crystallization of the functional oxides. Spray coating is a promising technique to grow thin film in research and industry to prepare thin and thick films. It is an easy approach to fabricate thin film with uniform distribution at small scale from a few nanometers to micrometers in thickness. Inkjet printing is the emerging promising technique to develop large-scale, and flexible thin films. The inkjet printing process allow easy customization to grow variety of complex structures.
The Impact of Dietary Compounds in Functional Foods on MicroRNAs Expression
Authors: Chaiwangyen Wittaya
Published: April 2021

MicroRNAs (miRNAs) are a class of non-coding endogenous RNA molecules that are involved in post-transcriptional gene silencing via binding to their target messenger RNA, leading to mRNA degradation or translational repression. MicroRNAs can be modulated by several factors including hormones, transcription factors, and dietary compounds. These biologically active compounds have positive impact on the progression of human pathology including non-communicable diseases, which indicating that administration of diet may have potential as therapeutic agents in modulating the risk of chronic diseases. Interestingly, evidence emerging in recent years suggests that dietary miRNAs can be absorbed in human circulation, modulated human gene expression and biological functions. The exploitation of the miRNA functioning within different origins, cellular miRNAs and dietary miRNAs will help us to understand the molecular machinery as well as the regulatory mechanisms involved in fundamentally important biological processes. Therefore, this knowledge may be applied of natural bioactive compounds in preventive or therapeutic approaches.
Biodiversidade amazônica em materiais de divulgação científica com ênfase para o ensino de Ciências
Authors: Andrade Iara Maíra Moraes de , Vasconcelos Elizandra Rego de
Published: April 2021

Este artigo tem como objetivo analisar materiais de divulgação científica utilizados no ensino de ciências. Pra isso, buscou-se identificar diferentes sentidos e significados que a biodiversidade amazônica assume. A pesquisa documental realizou-se conforme os seguintes critérios: origem brasileira, idioma português e disponível gratuitamente. Foram analisados materiais de divulgação científica que abordam o tema biodiversidade amazônica, obedecendo os seguintes critérios: ser revista brasileira, estar no idioma português e ser gratuito.
Estimated length of stay calculated by “diagnosisrelated groups” in patients with prostate cancer: a retrospective analysis
Authors: Freitas Daniel Melecchi , Zorzo Isabelle W , Nader Gisele Bastos , Carvalhal Eduardo Franco , Maccari Jussara , Nasi Luiz , Weiss Mauro
Published: April 2021

Introduction: To evaluate whether the presence of bone metastasis in hospitalized patients with prostate cancer (PCa) is associated with a longer length of stay (LOS) when compared to LOS estimated by diagnosis-related groups (DRG). Methods: We performed a retrospective analysis of 86 admissions of patients with PCa at our facility in 2018-2019. Admissions were divided into two groups based on actual LOS and LOS estimated by DRG: group 1 (actual LOS=DRG-LOS) and group 2 (actual LOS<DRG-LOS). The association of bone metastasis and other variables with increased LOS was evaluated by logistic regression with univariable and multivariable analysis, controlling baseline patient characteristics. Results: Longer LOS was not associated with baseline characteristics (age, body mass index, and presence of comorbidities), but was significantly associated with type of admission and ICU (intensive care unit) admission during hospitalization (p<0.05). Bone metastasis was observed in 28 (68.3%) of group 2 admissions and was independently associated with increased LOS (group 2) on univariable and multivariable analysis (OR=4.76, 95% CI=1.91-11.8, p=0.001; OR=3.48, 95% CI=1.08-11.2, p=0.03, respectively). Conclusion: Among clinical or surgical admissions of patients with PCa over a 1-year period, presence of bone metastasis was independently associated with increased LOS when compared to LOS estimated by DRG. The presence of bone metastasis may be used to identify possible outliers not recognized by the DRG system.
Stage directions in Borislav Mihajlović Mihiz's play 'Banović Strahinja'
Authors: Đurković Uroš
Published: April 2021

Borislav Mihajlović Mihiz's play Banović Strahinja excels as a text of special dramatic qualities, deeply connected with various aspects of stage directions. In order to show them, we analyzed how various dramatic elements, such as characterization, irony, space, and time, are represented in the context of stage directions. One of the most important aspects of Banović Strahinja is present in auctorial voice that can be seen both in the stage directions and as part of the primary text. Because of that, Mihiz's play cannot be seen only as a reinterpretation of the famous Serbian epic poem, but also as a literary work in its own right firmly connected with modern theater tendencies.
Measures of noncompactness on w-distance spaces
Authors: Kostić Aleksandar
Published: April 2021

The aim of this paper is to provide a new framework for the study of measures of noncompactness in generalized metric spaces. Firstly, we introduce the notion of w-measure of noncompactness on metric spaces with a w-distance and extend the diameter and Kuratowski functionals to this setting. At the end we give a characterization of metric completeness via our main results, providing a new answer to the open question mentioned by Arandjelović in his PhD thesis [2].
Formation and dynamics of attitudes towards refugees in Bulgaria
Authors: Mantarova Anna
Published: April 2021

The wave of refugees to Europe after 2011 brought tens of thousands of immigrants to Bulgaria, and the society faced unexpected challenges. The aim of the present study is to establish what the attitudes of Bulgarians to refugees are like, what influences these attitudes, whether and how they change over time. The study is based on information collected in surveys in 2017 and 2019 and survey in areas with refugee accommodation centres. New in the article is that it not only reveals the attitudes and identifies their dependencies, but also traces the dynamics over time. The conclusion is that over time the sense of threat subsides and in the formation of the attitude to refugees more and more importance is given to social qualities, and not so much to religious, racial and ethnic affiliation.
Stress at work: A special phenomenon or a type of general stress? - Milanko Čabarkapa: Professional stress: Psychology of stress at work, Institute for Textbooks, Belgrade, 2017
Authors: Lalević Nina
Published: April 2021

Occupational stress is drawing the attention of an increasing number of authors who deal with psychology of work and organization. Unlike old, "industrial" definitions of stress at work, modern ones put the emphasis on the psychological aspects of work which have adverse effects on the employee's mood, motivation and general health condition. Therefore, more attention is dedicated to the approach of superiors, interpersonal relations and balance between private and business life, as well as traditional effects of monotony, work conditions and opportunities for advancement. The author establishes an expertise base about stress by presenting and analyzing the results of numerous scientifically relevant studies on the topic of stress at work, thus familiarizing students, researchers and practitioners with the most important postulates, observations and implications for treating consequences of stress. Moreover, stress as one of the most current issues of modern era is increasingly positioning itself in the centre of the work context through problematic interpersonal relations, conflict or confusing work roles and insufficient or inadequate reward. The author finishes his book/textbook with the chapter about stress measurement methods and techniques, which will be crucial in proving the presence and toxic effects of stress, and in treating stress-related occupational diseases in the future.
A Hybrid Viscous/Potential Flow Method for the Prediction of the Wetted and Cavitating Performance of Ducted Propellers
Authors: Kinnas Spyros A. , Jeon Chan-Hoo , Tian Ye
Published: April 2021

This paper presents the analysis of the performance for various ducted propellers using a hybrid numerical method, which couples a vortex lattice method (VLM) for the analysis of propellers and a Reynolds-Averaged Navier-Stokes solver for the prediction of the viscous fluid flow around the duct. The effects of viscosity on the effective wake and on the performance of the propeller blade, as well as on the predicted duct forces, are assessed. The prediction of the performance for those ducted propellers from the present method is validated against existing experimental data.
Design and Implementation of Bridge Simulator Systems for High Speed Ships
Authors: Miller Eugene , Gladhill Jeff , Fox Brett
Published: April 2021

This paper provides an introduction to the requirements, design and implementation of bridge simulator systems to support the training of operators and bridge teams for fast ships. Consistent with the practice for conventional ships, there is a trend to use bridge simulator systems to support the training of individual operators and bridge teams of fast ships. This also applies to a lesser degree to support the training of operators of high speed boats. Although they share much in common with bridge simulators for conventional ships, bridge simulator systems for fast ships have to support additional or different emphasis on training requirements. These training requirements arise due to the inherent nature of fast ships (operation at high speeds) and the design features typically implemented in fast ships. In the context of this paper, fast implies the capability to operate for sustained periods at speeds in excess of 30 kts.

The following sections provides some background information, discuss the training requirements that are specific to fast ships, the translation of these training requirements into requirements for fast ship bridge simulator and then some examples related to the implementation of these simulator requirements in existing systems.
Model Test Evaluation of High Speed Trimaran (HST) Sea Train Concept
Authors: Mizine Igor , Karafiath Gabor
Published: April 2021

Sea Train is a longitudinal assembly of essentially similar size transportation units that increase the overall length resulting in a performance benefit to the system. Different types of mechanical connector hydrodynamic loads in a sea state have been the Achilles heel of platform assemblies operating on the sea surface. For example, Mobile Offshore Base project was discontinued in the early 1990s, partly because of the risk associated with extremely high connector loads.

The paper describes the Sea Train concept that eliminates the need for a mechanical link type of connector between units, thus allowing for rapid automatic assembly/disassembly into Sea Train formation.

All of the previously explored seatrain concepts resulted in a very long assembly of units, and the concepts with no yaw articulation between units were expected to have very large turning diameters.

Therefore a bulbous above water cylindrical nose and socket were designed to allow yaw articulation. The proposed connectorless approach to Seatrain assembly with ball and open socket coupling will also allow for lateral articulation between units to enhance turning.

Sea Train is a new concept for Military Sealift as well as for a broad spectrum of potential commercial marine transportation applications. The main advantages for Sealift are high speed and austere port access. A commercial application includes an America’s Marine Highway (AMH) Concept. A seatrain carrier for rolling stock envisioned along with the possibility of continuous coastal service that has units dropping off and other units joining up to deliver cargo.

Recently, selected model tests and operational demonstration, were performed by NSWCCD at their indoor tow tank and their outdoor maneuvering facility at Tridelphia Reservoir. A combination of individual unit tow arrangements, control algorithms for propulsion and steering, and remote control operation were examined. In conjunction with the operational demonstration, towing tank tests were done to measure a number of hydrodynamic factors. The primary objective was to determine the magnitude of resistance. These test results have confirmed basic Sea Train expectations and are presented in the paper.
Modeling the Flow over Planing Hulls with Ventilated or Cavitating Steps
Authors: O'Reilly Christopher , Murphy Matthew , Piro Dominic , Fine Neal
Published: April 2021

A numerical model is being developed to solve for six-degree-of-freedom forces experienced by a cavitating, stepped planing hull. An approach to solving the cavitation or ventilation problem is described. Next a method for solving for spray roots on the hull is detailed and a method for approximating the transom wake for a 3 dimensional planing hull is discussed. Results of the cavity solver for a three-dimensional linear solution are presented. Finally results in the context of three-dimensional planing hull steady resistance simulations are presented and compared to RANS CFD and tow tank experiments.
Optimization of the Hybrid Ship Transport Factor through Retrofitted Wave Cancelling Side-Hull Expansions and Bow Bulb
Authors: Kandasamy Manivannan , Wu Ping C. , Bartlett Scott , Nguyen Loc , Stern Frederick
Published: April 2021

The US Navy is currently considering the introduction of a Flight III variant beginning with DDG-123 in Fiscal Year 2016. The new design incorporates a new combat system and associated power and cooling upgrades. The overall system improvements increase the payload of the ship and the resulting increased displacement has a negative impact on the service life allowance for range, fuel consumption and sea-keeping characteristics. The present objective is to increase the hull displacement without resistance and sea-keeping penalty and with minimal modifications to the baseline DTMB-5415 design (open literature surrogate of the existing DDG-51 hull form) by using retrofitted blisters in the form of side hull expansions and a bow-bulb. The investigation makes use of high-performance CFD computing for analysis of wave cancellation mechanisms. A candidate modified 5415 design with both blisters and bow bulb shows a resistance reduction of ~11% w.r.t.the baseline 5415 in the design speed range of 15-19 knots, even though the displacement is increased by 8%, such that the transport factor is increased by 19%.
Development and Optimization of Mathematical Model of High Speed Planing Dynamics
Authors: Kanyoo Prin , Taunton Dominic J. , Blake James I. R.
Published: April 2021

The primary difference between a planing craft and a displacement ship is that the predominant force to support the conventional or displacement craft is hydrostatic force or buoyancy. While in the case of planing craft, the buoyancy cedes this role to hydrodynamic lift force caused by flow and pressure characteristics occurring when it is travelling at high forward speed. However, the magnitude of hydrostatic force is still significant that cannot be completely neglected. Due to the high forward speed and trim angle, the flow around and under the planing hull experiences change of momentum and leads to the appearance of lift force according to the 2ndlaw of Newton. In other words, there is a relative velocity between the craft hull and the wave orbital motion that causes hydrodynamic pressure generating hydrodynamic lift force act on the hull surface. Then, in case of behaviors in waves, an additional contribution of ship motions is necessary to be considered in the relative velocity, resulting in nonlinear characteristic of its physical nature.
Exploratory Towing Tests of Seaplane Skipping
Authors: Morabito Michael G. , Lorio Justin
Published: April 2021

Recently, there has been significant interest in unconventional concepts such as unmanned aerial vehicles and wing-in-ground effect craft, which require the ability to take-off from and land on water. These emerging focus areas are in addition to the traditional roles of commercial, recreational or civil seaplanes. Skipping is a hydrodynamic instability in heave that can occur on many types of seaplanes and can result in a loss of the aircraft. This paper summarizes exploratory hydrodynamic towing tests intended to isolate skipping from other hydrodynamic instabilities in heave and pitch. The tests show that skipping can initiate in calm water at fixed trim. Pressure taps located aft of the step record large negative pressures during runs in which the seaplane skipped. The addition of passive ventilation tubes aft of the step broke the suction and eliminated skipping, in accordance with past studies on the subject. The relative magnitudes of the forces involved in skipping are discussed, and it is shown that the afterbody suction forces are very large relative to the steady-state hydrodynamic lift. The findings of this study are also applicable for stepped planing hulls, highlighting the significance of proper step ventilation.