bluuebunny/crossref_metadata_2025 huggingface dataset:
A satisfação no trabalho docente em educação física: um diagnóstico do perfil de professores universitários
Authors: Broch Caroline , Both Jorge , Teixeira Fabiane Castilho , Pizani Juliana , Barbosa-Rinaldi Ieda Parra
Published: May 2021

A pesquisa descritiva teve por objetivo verificar os diferentes perfis de docentes universitários de Educação Física, considerando à satisfação no trabalho e sua relação com as variáveis sociodemográficas e profissionais. Foram investigados 99 docentes de Educação Física, com vínculo em instituições públicas e privadas do Paraná. Na coleta de dados, questionários foram empregados para identificar o perfil sociodemográfico e Qualidade de Vida no Trabalho. Na análise estatística, foi utilizada a Análise de Cluster, o teste Qui-quadrado e os testes de Kruskal-Wallis com post hoc de Comparação Múltipla de Dunn. Os resultados evidenciaram três grupos de docentes: o Grupo 1 apresentou insatisfação, sobretudo, com a integração social e com o trabalho e espaço total de vida. O Grupo 2 mostrou-se pouco satisfeito com as condições de trabalho e com a integração social. E, o Grupo 3 apresentou maior satisfação profissional, entretanto, possuíam menor tempo de atuação na universidade. Por fim, conclui-se que os aspectos sociodemográficos e profissionais são fatores intervenientes na satisfação com o trabalho docente.

A pesquisa descritiva teve por objetivo verificar os diferentes perfis de docentes universitários de Educação Física, considerando à satisfação no trabalho e sua relação com as variáveis sociodemográficas e profissionais. Foram investigados 99 docentes de Educação Física, com vínculo em instituições públicas e privadas do Paraná. Na coleta de dados, questionários foram empregados para identificar o perfil sociodemográfico e Qualidade de Vida no Trabalho. Na análise estatística, foi utilizada a Análise de Cluster, o teste Qui-quadrado e os testes de Kruskal-Wallis com post hoc de Comparação Múltipla de Dunn. Os resultados evidenciaram três grupos de docentes: o Grupo 1 apresentou insatisfação, sobretudo, com a integração social e com o trabalho e espaço total de vida. O Grupo 2 mostrou-se pouco satisfeito com as condições de trabalho e com a integração social. E, o Grupo 3 apresentou maior satisfação profissional, entretanto, possuíam menor tempo de atuação na universidade. Por fim, conclui-se que os aspectos sociodemográficos e profissionais são fatores intervenientes na satisfação com o trabalho docente.
Effect of Fin Inclination Angel on Heat Transfer Improvement in an Annular Space of a Rotor Stator
Authors: ATTOU Youcef , Kebir Farouk
Published: May 2021

The present work deals with the numerical investigation of forced convection flow and heat transfer in a finned concentric annulus. The outer cylinder is axially finned while the rotating inner cylinder has a smooth surface. Our research focus on the impact of the fin inclination angle on heat transfer enhancement in rotating annular channels. Tests were carried out for different geometrical configurations using fins with inclined angle (α = 30°, 60°, 90° and 120°). Numerical study is based on effective Reynolds number and Taylor number. The results obtained using the code ANSYS-Fluent with SST k-ω turbulence model show a good agreement between the experimental and the numerical results. In the presence of rotational flow (Ta = 1.14 × 106), the results indicate that α =120° is the optimal case which improves significantly the heat and mass transfer inside the finned channel.
Effect of an Anchor Geometry on the Hydrodynamic Characteristics of a Nanofluid in Agitated Tank
Authors: Mokhefi Abderrahim , Bouanini Mohamed , Elmir Mohammed , Spitéri Pierre
Published: May 2021

In this paper, the flow of a shear thinning nanofluid in a mechanically stirred tank has been numerically analyzed. This tank is cylindrical with a flat bottom. It is filled with Al2O3 nanoparticles suspended in the base fluid and equipped with an anchor-type stirrer whose shape is tilted upwards at an angle α. The purpose of this research is to study the impact of the tilt angle (0≤α≤π/6) and the effect of the alumina nanoparticles concentration (0≤φ≤0.1) on the hydrodynamic behavior and energy consumption. In the new anchor design (α>0), the fluid volume that is swept during the rotation of the anchor is the same as that in the case of a standard anchor (α=0). The laminar flow of the nanofluid is governed by the continuity and momentum equations taking into account the physical properties of the nanofluid introduced through correlations cited in the literature. The results obtained have shown that the tilt angle significantly contributes to the reduction of the power number, and leads to a decrease in the intensity of the tangential flow at the level of the extreme transverse planes of the tank. However, this reduction in intensity is compensated by increasing the axial flow. The use of nanoparticles in this work aims to show the role of the new design of anchor in creating a vortex at the bottom of the tank and to avoid of particles sedimentation.
Numerical Investigation of Gas-Liquid Two-Phase Flows in a Cylindrical Channel
Authors: Gourari S. , Mebarek-Oudina Fateh , Makinde Oluwole Daniel , Rabhi M.
Published: May 2021

Two-phase flows are widely encountered in many natural phenomena and industrial processes. The presence of one or more interfaces between the two phases presents a major difficulty which makes the modeling and the simulation of this type of flow complex. This work consists in performing a three-dimensional numerical simulation of a two-phase Hydrogen-Water flow inside a horizontal cylindrical channel. The results are obtained in the form of velocity contours, enthalpy and pressures.
Natural Convection from Two Hot Semi-Circular Cylinder Confined in Cold Circular Cylinder
Authors: Helmaoui Mustapha , Laidoudi Houssem , Ghenaim Abedallah
Published: May 2021

Numerical simulations were performed to study the pertinent parameters of natural convection in annular space. The studied geometry consists of two semi-circular cylinders of hot walls confined in cold cavity of circular cross-sectional form. The simulations were done by solving numerically the governing equations via the commercial software ANSYS-CFX. The results showed that this new form of inner cylinders is suitable for insulating applications. The pertinent parameters were selected for this work were: Prandtl number (Pr = 0.71 to 1000) and Rayleigh number (Ra = 103, 104 and 105).
Inhibitive Characteristics of Cefalexin Drug Addition on Corrosion Evolution of Mild Steel in Chloride Medium
Authors: Fayomi Ojo Sunday Issac , Akande Godwin , Ighravwe Desmond E. , Aikhuele Daniel O.
Published: May 2021

The inhibition effect of Cefalexin on the corrosion of mild steel in sodium chloride has been examined with the use of weight loss and potentiodynamic polarization methods at ambient temperature. Cefalexin showed good protection ability by adsorbing on the mild steel surface. The mixed inhibition characteristics of Cefalexin were revealed by the Potentiodynamic polarization results. The inhibitor efficiency was found to be above 65% obeying the Langmuir and Freundlich isotherm law with correlation regression coefficients of R2 = 0.9984 and R2 = 0.9488, respectively. The closeness of these R2 values to unity established the reliability of Cefalexin as an inhibitor.
Austenitic 316L Stainless Steel; Corrosion and Organic Inhibitor: A Review
Authors: Fajobi Muyiwa Adedapo , Loto Roland Tolulope , Oluwole Olugbemiga Oluleke
Published: May 2021

Stainless steels are extensively used for both engineering and industrial applications based on their excellent properties which makes them fit for various purposes. During applications, they are usually faced with corrosion attacks which have always been their uttermost challenge. To this reason, this research enumerates the properties of stainless steels, the use of inhibitors for control, existing research on austenitic 316L stainless steel with their inhibitor efficiencies, the environment used, the concentration of the environment used, experimental analysis carried out, and emphasis on the use of organic inhibitor for a sustainable industry. The results of each research showed strong inhibition efficiency values with an optimum efficiency value of 98.86%, which suggests excellent performance of organic inhibitors due to their functional groups and molecular species which promote strong adsorption inhibition mechanism.
Investigation of Corrosion Resistance and Microstructural Performance of Zn-MgO-WB Composite Coating on Mild Steel
Authors: Fayomi Ojo Sunday Issac , Akande Godwin , Ofo C.
Published: May 2021

This Paper investigated the corrosion resistance and microstructural performance of zinc-magnesium oxide-tungsten boride (Zn-MgO-WB) composite coating on mild steel. Tungsten boride as an additive was co-deposited with zinc-magnesium oxide on mild steel via electrolytic deposition. The zinc-magnesium oxide and zinc-magnesium oxide-tungsten boride composite coatings were fabricated at the voltage of 0.6 and 0.8 V for 15 minutes and 45 °C. The effects of the deposits on the corrosion properties were examined. The corrosion behaviour was studied using linear polarization and weight loss method in 3.5% NaCl simulated environment. From the results obtained, it is evident that a decrease in applied potential influences the deposition of the coatings. The alloys with tungsten boride in their bath mixture performed better than those without. The zinc-magnesium oxide-tungsten boride (0.8 V) composite coated sample exhibits the least corrosion rate (Cr) of 0.0010482 mm/year and the microstructural examination of the sample via scanning electron microscope (SEM) unveiled homogeneous dispersion of particles and smooth morphology. The smooth morphology, defect-free surface, coupled with the uniform dispersion of the zinc-magnesium oxide-tungsten boride nanoparticles on the steel surface could have been responsible for high corrosion resistance performance of the coating in the simulated 3.5% NaCl medium. More so, the energy dispersive spectroscopy (EDS) revealed the presence of zinc, magnesium oxide, tungsten boride particles.
Preparation and Physical Properties of PCL-Metoprolol Tartrate Electrospun Nanofibers as Drug Delivery System
Authors: Moosa Saja A. , Jabur Akram R. , Al-Hassani Emad S.
Published: May 2021

Electrospinning is considered a promising technology for encapsulating and loading various drugs into nanoﬁbers. Metoprolol tartrate (MPT), hydrophilic therapy, was used as model drug. Metoprolol tartrate was loaded into poly(ɛ-caprolactone) (PCL) via blend and emulsion electospinning. The preparation processes, morphology, chemical structure thermal properties were evaluated. FESEM showed that emulsion electospinning produce larger fiber diameters(301.775nm) when compared to fibers produced by blend electrospinning(112.463, 249.34)nm, the PCL/ span 80 and MPT-PCL by emulsion method which have high fiber diameter than pure PCL and MPT-PCL by blend method and the Tm of pure PCL nanofibers and all drug loaded scaffolds are around 60°C from DSC test, water contact angle to pure PCL electrospun mats hydrophobic character (126.2°), while PCL/span 80, and PCL-drug nanofiber mats showed hydrophilic character. Our study demonstrated the possibility of using electrospinning with a promising good potential toward sustained and controlled drug delivery system.
Evaluation of Surface Roughness of Some Biomedical Titanium Alloys by Pack Cementation Coating
Authors: Ali Zainab Zuhair , Al-Hasani Fatimah J.
Published: May 2021

Titanium possesses a unique ability to bind with bone and living tissue, making it an ideal material for orthopedic implants such as knee and hip replacements. Because of the strength to weight ratio, hermeticity, biocompatibility and light weight makes titanium and its alloy the best choice for implant. The main goal focused on studying the influence of surface coating of some titanium base alloys by Nano (ZrO2&Y2O3) to the surface roughness of implant alloys. Preparation of samples was accomplished by using powder technology technique, in which the raw materials was pure titanium, 10%cobalt,50% nickel, and 30% tantalum powders. The samples were cleaned by ultrasonic device the surface pre- treated by chemical etching, then deposition of nano (ZrO2 with Y2O3) accomplished by pack cementation process. After samples characterization by (X-ray diffraction, hardness test, porosity percentage and Surface roughness). The result showed that diffraction patterns gained for the samples were the phases developed as a result of sintering and after deposition, There are likely no presents of pure metals that prove the time and temperature of sintering utilized in this work results in full sintering reactions, the XRD patterns of samples after (ZrO2,Y2O3) deposition by pack cementation process. It is obvious that Amorphous behavior was observed in the XRD after deposition nearly at 2θ (15.799) for all samples. It is evident that the porosity percent of the samples after (ZrO2, Y2O3) deposition was largely decreases due to the pack cementation process. There was considerable increasing in hardness value, finally the roughness values obtained from the AFM it was found that there are large changes in the roughness value of samples after coating due to full the surface by Nano ceramic material deposition.
Phase Change Materials Technologies Review and Future Application in Lebanon: Part II
Authors: Eid Salam , Brouche Marwan , Lahoud Chawki , Lahoud Christy
Published: May 2021

In Lebanon, the demand for energy is constantly increasing. A tremendous increase of 83% in energy demand was recorded between 2009 and 2019. The national electricity company (EDL) is unable to supply electricity needs. These needs are covered by expansive and polluting backup generators. Furthermore, according to the World Bank (2016), the national power sector share was 57.8% of total CO2 emissions in 2015, and 25.2% among them came from private diesel generators. The building sector and related activities is responsible of a large part of energy consumption. Thus, phase change materials with different ways of building integration are used as a solution. In this paper, a representation of different types and building integration methods of PCM is conducted. This paper review will present the previous studies concerning different types and integration methods of PCM, furthermore, environmental, energetic, and economic viability study will be highlighted simultaneously tackling future challenges in regards to PCM integration into buildings under Lebanese climate conditions.
An Open Circuit Voltage Decay System for a Flexible Method for Characterization of Carriers’ Lifetime in Semiconductor
Authors: Amri Khaoula , Belghouthi Rabeb , Aillerie Michel , Gharbi Rached
Published: May 2021

Among all the material parameters of a semiconductor, the lifetime of the carriers is one of the most complex, as it is a function of the dominant recombination mechanism, the number of carriers, the structural parameters and the temperature. Nevertheless, the lifetime of the carriers is a very useful and fundamental parameter to be determined for the qualification of the semiconductor in order to allow the improvement of the manufacturing process and the optimization of the operation of the semiconductor device. Thus being strongly linked to many physical and electronic parameters, the lifetime of the carriers cannot be provided only with a theoretical average value and an experimental measured value must be obtained. In the case of semiconductor junctions, precise measurements of the open-circuit voltage decay, OCVD, make it possible to trace the lifetime of the carriers through the device. An automated method for OCVD measurements presented in this contribution overcomes the main limitations that arise in the standard method when used for the characterization of the lifetime of carriers as it achieves the "open circuit conditions" of the device under test and reduces inherent noise of the differential operation mode of the method.
Synthesis and Characterization of the Thin Films NiSe2/Si Heterojunction for Solar Cells
Authors: Hasan Shaymaa Qasim Abdul , Obaid Ahmed Z. , Hassun Hanan K. , Shaban Auday H.
Published: May 2021

Thin film solar cells are preferable to the researchers and in applications due to the minimum material usage and to the rising of their efficiencies. In particular, thin film solar cells, which are designed based one transition metal chalcogenide materials, paly an essential role in solar energy conversion market. In this paper, transition metals with chalcogenide Nickel selenide termed as (NiSe2/Si) are synthesized. To this end, polycrystalline NiSe2 thin films are deposited through the use of vacuum evaporation technique under vacuum of 2.1x10-5 mbar, which are supplied to different annealing temperatures. The results show that under an annealed temperature of 525 K, the nickel sulfoselenide thin films are polycrystalline with an efficient regularity and best crystalline quality. In addition, the results demonstrate that the intersection argument for the optical properties under investigation provid the direct bandgap, over which the films have inferred on variety (1.55 and 1.75 eV). Overall, the results illustrate that an efficiency of 2.89% can be achieved with 525 K temperature.
Assessing the potential environmental factors affecting cladoceran assemblage composition in arsenic-contaminated lakes near abandoned silver mines
Authors: Sivarajah Branaavan , Vermaire Jesse C. , Smol John P.
Published: May 2021

Silver mining has a long history in Cobalt (Ontario, Canada), and it has left a complex environmental legacy where many lakes are contaminated with arsenic-rich mine tailings. In this exploratory survey, we examined subfossil Cladocera remains in the surface sediments of 22 lakes in the abandoned mining region to assess which environmental variables may be influencing the recent assemblage structure. Further, using a “top-bottom” paleolimnological approach, we compared the recent (top) and older (bottom) assemblages from a subset of 16 lakes to determine how cladoceran composition has changed in these lakes. Our regional survey suggests that the cladoceran assemblages in the Cobalt area are primarily structured by differences in lake depth, while site-specific limnological characteristics, including those related to past mining activities, may have limited roles in shaping the recent cladoceran compositions. The top-bottom paleolimnological analysis suggests that the cladoceran assemblages have changed in most lakes around Cobalt, however the magnitude and nature of changes varied across the study sites. As with most regional biological surveys, the responses to historical mining activities were not uniform across all sites, which further emphasizes the importance of considering site-specific limnological characteristics and multiple environmental stressors when assessing the impacts of mining pollution.
Novel biallelic loss-of-function mutations in CFAP43 cause multiple morphological abnormalities of the sperm flagellum in Pakistani families
Authors: Khan Ihsan , Shah Basit , Dil Sobia , Ullah Nadeem , Zhou Jian-Teng , Zhao Da-Ren , Zhang Yuan-Wei , Jiang Xiao-Hua , Khan Ranjha , Khan Asad , Ali Haider , Zubair Muhammad , Shah Wasim , Zhang Huan , Shi Qing-Hua
Published: May 2021

Multiple morphological abnormalities of the sperm flagella (MMAF) is a specific type of asthenoteratozoospermia, presenting with multiple morphological anomalies in spermatozoa, such as absent, bent, coiled, short, or irregular caliber flagella. Previous genetic studies revealed pathogenic mutations in genes encoding cilia and flagella-associated proteins (CFAPs; e.g., CFAP43, CFAP44, CFAP65, CFAP69, CFAP70, and CFAP251) responsible for the MMAF phenotype in infertile men from different ethnic groups. However, none of them have been identified in infertile Pakistani males with MMAF. In the current study, two Pakistani families with MMAF patients were recruited. Whole-exome sequencing (WES) of patients and their parents was performed. WES analysis reflected novel biallelic loss-of-function mutations in CFAP43 in both families (Family 1: ENST00000357060.3, p.Arg300Lysfs*22 and p.Thr526Serfs*43 in a compound heterozygous state; Family 2: ENST00000357060.3, p.Thr526Serfs*43 in a homozygous state). Sanger sequencing further confirmed that these mutations were segregated recessively in the families with the MMAF phenotype. Semiquantitative reverse-transcriptase polymerase chain reaction (qRT-PCR) was carried out to detect the effect of the mutation on mRNA of the affected gene. Previous research demonstrated that biallelic loss-of-function mutations in CFAP43 accounted for the majority of all CFAP43-mutant MMAF patients. To the best of our knowledge, this is the first study to report CFAP43 biallelic loss-of-function mutations in a Pakistani population with the MMAF phenotype. This study will help researchers and clinicians to understand the genetic etiology of MMAF better.
Prevalence and risk factors for diabetic retinopathy in Nigeria
Authors: Azeez Taoreed Adegoke , Adediran Olusegun Adetomiwa , Eguzozie Emmanuel Chinedu , Ekhaiyeme Ejemhen
Published: May 2021

Introduction:

The prevalence of diabetes mellitus and its complications is rising globally. Diabetic retinopathy is one of the most common microvascular complications of diabetes and is the most common cause of blindness in adults globally. The aims of this study were to determine the pooled prevalence of diabetic retinopathy in Nigeria and to identify the associated risk factors.

Methods:

Medical databases including PubMed, Google Scholar, African Journals online, Cochrane library, EMBASE, and SCOPUS were searched for studies on diabetic retinopathy in Nigeria between the years 2000 and 2020 using the MESH terms “diabetic retinopathy,” “prevalence,” “risk factors,”, “Nigeria.” The gray literature was also searched. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were strictly adhered to in selecting the studies. The outcome variables of interest were prevalence of diabetic retinopathy in Nigeria as well as risk factors associated with diabetic retinopathy. The Newcastle-Ottawa scale was used to assess the quality and bias of the selected studies. Statistical analyses were performed using Stata version 14.3. DerSimonian and Laird random-effect model was used. Heterogeneity was assessed using the I
2 statistic.

Results:

Twenty studies met the eligibility criteria and they were selected for the studies. The total sample size was 3299. I
2 statistic was 99%, which suggests a high level of heterogeneity among the selected studies. Using the random-effect model, the pooled prevalence of diabetic retinopathy in Nigeria was 21.3% (95% confidence interval 21.1–21.5). The most common risk factors for diabetic retinopathy in Nigeria were duration of diabetes, poor glycemic control, and hypertension.

Conclusion:

The prevalence of diabetic retinopathy in Nigeria is high and there is a need to improve the glycemic control of patients with diabetes so as to prevent or delay its onset.
Quasi-equivalence of bases in some Whitney spaces
Authors: Goncharov Alexander , Şengül Yasemin
Published: May 2021

If the logarithmic dimension of a Cantor-type set K is smaller than
$1$
, then the Whitney space
$\mathcal {E}(K)$
possesses an interpolating Faber basis. For any generalized Cantor-type set K, a basis in
$\mathcal {E}(K)$
can be presented by means of functions that are polynomials locally. This gives a plenty of bases in each space
$\mathcal {E}(K)$
. We show that these bases are quasi-equivalent.
Clinical outcomes of COVID-19 amongst HIV patients: a systematic literature review
Authors: Massarvva Thomas
Published: May 2021

OBJECTIVES: The global pandemic coronavirus disease 2019 (COVID-19) emerged in the city of Wuhan, China around December 2019. Since then, the virus has caused severe morbidity and mortality worldwide and has put pressure on the global medical system. Still, there are limited data regarding the clinical impact of COVID-19 on people living with human immunodeficiency virus (HIV). The primary aim of this study was, therefore, to systematically review up-to-date studies reporting the clinical outcomes of COVID-19 amongst HIV patients.METHODS: A thorough literature search was carried out using MEDLINE, Embase, Scopus, and the Cochrane Library Databases in accordance with the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines.RESULTS: A total of 22 studies were identified. Amongst 730 HIV/COVID-19-coinfected patients, 79.4% were males, the median age was 51.5 years, and the number of reported patients receiving antiretroviral drugs was 708 (97.2%). Most coinfected patients had mild to moderate symptoms, including cough (37.7%), fever (37.5%), and dyspnoea (24.7%). Among pre-existing comorbidities, hypertension (26.3%) was the most prevalent in HIV/COVID-19 coinfected patients, and 87% of coinfected patients recovered.CONCLUSIONS: Based on the existing data in this systematic literature review, HIV patients with pre-existing comorbidities, obesity, and older age should be considered as a high-risk group for COVID-19. Furthermore, coinfected patients appear to have marginally comparable clinical outcomes with the general population. The study’s findings highlight the need for further investigation to elucidate the impact of COVID-19 infection on HIV patients.
UNIVERSALIZATION OF THE EDUCATION IN THE BRAZILIAN MUNICIPALITIES
Authors: Alencar Diego Pinheiro , Alencar Juheina Lacerda Ribeiro Viana , Junqueira Adenilda Rodrigues da Silva
Published: May 2021

The educational inequalities in Brazil may be illustrated by the first Census of 1872, which pointed out that 15.11% of the country's population was composed of slaves. In that year, 50.95% of the population was considered illiterate. The related studies to the Brazilian social issue point to the North and Northeast regions as the most vulnerable in the national territory, a dynamic also reflected in educational opportunities. The population of the Northeast region, for example, presents a primary education completion rate of 27.43% lower in relation to the population living in the Southeast region. The Brazilian social inequality manifests itself in different dimensions, such as the cutting out of gender, ethnicity and region. At the municipal level, the percentage representation of the non-conclusion of the primary education is more evident in sparsely populated municipalities, with a predominantly rural population. In this profile of municipality, Youth and Adult Education is an important mechanism for tackling educational inequalities, especially when articulated with social protection policies. Keywords: Educational opportunities. Income inequality. Youth and Adult Education. Brazilian municipalities.
MATRIX OF DEPENDENCE OF MUNICIPALITIES IN THE NORTH REGION OF GOIÁS
Authors: Ferreira Ubirajara , Pasqualetto Antônio , Matsuura Fudio
Published: May 2021

Of the total number of municipalities in the northern region of the State of Goiás, part of them have their own revenues below requirements, if current conditions are maintained, they tend to be incorporated into neighboring municipalities from 2025 onwards in compliance with PEC 188/2019.Would there be an alternative for municipal development and sustainability without the necessary population increase? In this sense, the purpose was to identify the economic and social weaknesses that characterize the municipalities in the northern region and to create a “Dependency Matrix”. The methodology consisted of consulting databases of federal, state and municipal agencies and programs. The results demonstrate the low level of economic activity, own revenues, high dependence on external revenues, high payroll on civil clerk, exposing themselves to the dictates of the Fiscal Responsibility Law (LRF) and high dependence on the Income Transfer Programs of the Federal Government such as the Bolsa Família Program (PBF) and the Continuous Payment Benefit (BPC). The Dependency Matrix assists the municipal manager in restraining the alleged migratory flight, the loss of economic relevance, as well as economic, environmental and social sustainability. Keywords: Dependency Matrix. Economy. Sustainability.
URBAN CRISIS AND THE ANTIVALUE IN DAVID HARVEY
Authors: Valença Márcio Moraes
Published: May 2021

This text discusses and explains the relation between the urban crisis today and the antivalue in respect to the conceptual framework by David Harvey, a well-known British geographer. He approaches this theme in many of his books, including ‘Marx, capital and the madness of economic reason’, published in Brazil, in 2018. This text uses this book as a starting point for the discussion of how the contemporary world, which is increasingly urban, is dominated by the Empire of antivalue, especially in the form of a growing debt. The antivalue, in the form of capital holder of interest, plays a crucial role in the accumulation of capital, articulating production, circulation and realization of commodities, promoting and facilitating the geographical movement of capital and the transfer of capital between economic circuits and cycles of production. However, debt is the favorite form of antivalue under capitalism today. In addition to being supported and granted by the State in a variety of ways, including through public debt, debt imprisons all economic agents in perpetual servitude. Debt follows the tendency of continuous production of value and surplus value under capitalism, a movement that Harvey calls bad infinity. Antivalue in its form of debt is also called fetishism of capital, which defines the contradictory situation in which money alone seems to have the magic powers to create more money. The consequences of growing debt to the urban crisis go beyond the necessity of solving fiscal problems of the State. The need to produce value and surplus value, in addition to the service of the debt generates urban spaces marked by gentrification and segregation. In sum, the text discusses the urban crisis today in the context of the domination by the financial-real estate complex, basing the discussion on Marx’s theory of value and the concept of antivalue, as presented by David Harvey.
How Parents Cope with the Care of a Child with Epilepsy: Based upon Grounded Theory
Authors: Behnaz Bagherian  , Monirsadat Nematollahi  , Roghayeh Mehdipour-Rabori
Published: May 2021

BACKGROUND፡ Parents of children with seizure face the complicated health issues of their children. Adaptation strategies of parents as major care providers impact not only their handling of stresses on themselves but also children's quality of life. This study investigated the adaptation processes of parents of children with seizure at two educational hospitals affiliated with Kerman University of Medical Sciences in Iran.METHODS: Twenty parents (15 mothers and 5 fathers), and three nurses were selected using purposive sampling method. Data was collected using qualitative semi-structured interviews and analyzed using the method suggested by Corbin and Strauss version 2008. The interviews were conducted until thematic saturation was achieved.RESULTS: The adaptation process had five phases: “Disbelief, Patience on what happened, change to preserve, acceptance of the current situation, and self- empowerment." In summary, the parents of children with seizure had a 5-phase adaptation strategy. The core category achieved was "continued efforts of parents to restore calm."CONCLUSION: Properly assessing the stresses’ resources on parents of children with seizure is necessary. Informing their adaptation strategies may help medical staff and social services to provide more targeted support and promote the balance of the family function.
Functional and Structural Characterization of SARS-Cov-2 Spike Protein: An In Silico Study
Authors: Hadi Sedigh Ebrahim-Saraie  , Behzad Dehghani  , Ali Mojtahedi  , Mohammad Shenagari  , Meysam Hasannejad-Bibalan
Published: May 2021

BACKGROUND፡ Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the cause of the global outbreak of coronavirus disease 2019 (Covid-19), which has been considered as a pandemic by WHO. SARS-CoV-2 encodes four major structural proteins, among which spike protein has always been a main target for new vaccine studies. This in silico study aimed to investigate some physicochemical, functional, immunological, and structural features of spike protein using several bioinformatics tools.METHOD: We retrieved all SARS-CoV-2 spike protein sequences from different countries registered in NCBI GenBank. CLC Sequence Viewer was employed to translate and align the sequences, and several programs were utilized to predict B-cell epitopes. Modification sites such as phosphorylation, glycosylation, and disulfide bonds were defined. Secondary and tertiary structures of all sequences were further computed.RESULTS: Some mutations were determined, where only one (D614G) had a high prevalence. The mutations did not impact the B-cell and physicochemical properties of the spike protein. Seven disulfide bonds were specified and also predicted in several N-link glycosylation and phosphorylation sites. The results also indicated that spike protein is a non-allergen.CONCLUSION: In summary, our findings provided a deep understanding of spike protein, which can be valuable for future studies on SARS CoV-2 infections and design of new vaccines.
Assessment of Knowledge and Attitude towards Palliative Care and Associated Factors among Nurses Working in North Wollo Hospitals
Authors: Addisu Getie  , Adam Wondmieneh  , Ayelign Mengesha  , Awet Fitwi  , Getnet Gedefaw  , Asmamaw Demis
Published: May 2021

BACKGROUND: Palliative care improves the quality of life of patients facing a life-threatening illness. Nurses should improve their caregiving capacity. In Ethiopia, palliative care is underestimated. The availability of data regarding the knowledge and attitude of nurses towards palliative care is critically important. Thus, this study aimed to assess the level of knowledge and attitude of nurses towards palliative care.METHODS: Institution-based, cross-sectional study was conducted in North Wollo hospitals. A simple random sampling technique was used. The data was collected using structured selfadministered questionnaires from February to March 2019. The analysis was done using a binary logistic regression model. P-value < 0.05 was considered as statistically significant.RESULTS: The result revealed that 59.7% of the respondents had good knowledge and 44.2% had a favorable attitude towards palliative care. Level of education, experience in caring for chronically ill patients, and experience in caring for dying family members within the last 6 months had a significant association with the knowledge of nurses. Monthly income, experience in caring for chronically ill patients, formal palliative care education, and knowledge were found statistically significant with the attitude of nurses towards palliative care.CONCLUSION: More than half of the nurses had good knowledge, but less than half of the respondents had a favorable attitude towards palliative care. Attention should be given towards palliative care by the health policy and needs to be incorporated into the national curriculum of nursing education.
Effect of Foeniculum Vulgare Aqueous and Alcoholic Seed Extract against Zoonotic Cutaneous Leishmaniasis
Authors: Gholamrezaei Mostafa  , Jalallou Nahid  , Seyyedtabaei Seyyed javad  , Dadashi Alireza  , Salimi Sabour Ebrahim
Published: May 2021

BACKGROUND፡ Cutaneous leishmaniasis is considered one of the major neglected tropical diseases. Drug resistance, limitary efficacy, and severe side effects remain a challenge for treatment. Foeniculum vulgare is known as a medicinal plant belonging to the Apiaceae, and anti-microbial properties of this plant have already been confirmed.METHOD: The F.vulgare sterile aqueous and alcoholic extracts were prepared. In vitro has used RAW 264.7 cell line and L. major parasite (MRHO/IR/75/ER). Cytotoxicity assay on macrophages (CC50), cytotoxicity assay on promastigotes (IC50), and cytotoxicity assay on infected macrophages (EC50) were accomplished with both extracts by MTT and light microscopy methods. Four in vivo were allocated in four groups and five BALB/c mice each group. Stationary phase promastigotes were inoculated into the base of mice tails subcutaneously (SC).Measurement of the body weight, lesion size, parasite burden of the lesion, and spleen after 4 weeks for evaluation effects of the alcoholic extract on CL was done.RESULTS: The results of in vitro revealed that the optimal concentrations of both extracts reducing the promastigotes and amastigotes growth. Alcoholic extract no harmful side effects for the host macrophages, while were indicated has a potent action against L. major. In vivo results after 4 weeks did not show any variation in lesion size and body weight. Also, lesion size and spleen parasite burden decreased in comparison to no treatment group.CONCLUSION: The alcoholic extract could be a new alternative treatment for cutaneous leishmaniasis. However this extract needs more investigation for novel herbal drugs against CL.
Clinical Characteristics of COVID-19 Related Deaths in Ethiopia
Authors: Menbeu Sultan  , Desalegn Kene  , Woldesenbet Waganew  , Aschalew Worku  , Aklilu Azazh  , Beza Girma  , Yakob Seman  , Natinael Tessema  , Sisay Yifru  , Sisay Teklu  , Rahel Argaw  , Muluwork Tefera  , Miraf Walelegn  , Berhane Redae
Published: May 2021

BACKGROUND: Since the occurrence of COVID-19 in the world, it has claimed nearly 1.39 million human lives in the world and more than 1500 lives in Ethiopia. The number of deaths is increasing with variable distribution in the world. Despite its increasing fatality, the clinical characteristics of the deceased patients are not yet fully known. Analyzing the clinical characteristics of deceased patients will help to improve the outcome of infected patients. Hence, this study aimed to determine the clinical characteristics of patients who died due to COVID-19 in Ethiopia.METHODS: Hospital based multi-center cross-sectional study was conducted using chart review of deceased patients. Since the number of COVID-19 related deaths was limited, all consecutive COVID-19 related hospital deaths were analyzed. The data was entered into and analyzed using SPSS version 25.0. Descriptive statistics was used to explain the data collected from the survey.RESULT: A total of 92 deceased patient charts were analyzed. Of these patients, 65(71%) were males. Age ranged from 17 to 92 years (mean age being 59 years). On arrival vital signs, 60.5% of them had hypoxia, 49% had tachycardia and only 32% of patients had fever. Three fourth of the patients 64/85 had at least one comorbidity. Diabetes mellitus (DM) was the commonest comorbidity accounting for 445.9%, followed by hypertension, 23/85(27%), and HIV/ AIDS, 15/85 (17.5%).CONCLUSION: The results of this study showed that COVID-19 deceased patients presented with respiratory failure and hypoxia. However, less than a third of these patients had fever. In addition, the presence of comorbid illnesses and non-COVID-19 diseases like AIDS defining illness in significant amount needs further study to identify their level of contribution to the increasing burden of COVID-19 deaths in Ethiopia.
Development of a SYBR Green Multiplex Real Time PCR for Simultaneous Detection of Mycobacterium Tuberculosis and Nocardia Asteroides in Respiratory Samples
Authors: Safar Ali Alizadeh  , Amir Javadi  , Jalal Mardaneh  , Neda Nasirian  , Sajjad Alizadeh  , Maryam Mohammadbeigi  , Siamak Heidarzadeh
Published: May 2021

BACKGROUND፡ Nocardia asteroides and Mycobacterium tuberculosis are worldwide-distributed bacteria. These infectious agents can cause many infections in humans, especially in immunocompromised individuals. Pulmonary infections are more common and have similar clinical symptoms. Proper diagnosis and treatment of these patients are important for accurate treatment and could be lifesaving.METHODS: In this study, a multiplex real-time PCR assay was established for the simultaneous detection of the N. asteroides and M. tuberculosis. Both this homemade multiplex real time PCR and routine commercial tuberculosis tests were performed on 150 pulmonary specimens collected from individuals suspected to have tuberculosis.RESULTS: From 150 specimens, 20 samples were acid fast positive, 14 positives for M. tuberculosis by singleplex real time PCR, 10 positives for N. asteroides by singleplex real time PCR and 2 positives for M. tuberculosis and N. asteroides by multiplex real time PCR whereas 14 samples were positive for M. tuberculosis with commercial test. Differential diagnosis of pulmonary tuberculosis is useful for their proper treatment.CONCLUSION: Our test had good performance for differential diagnosis of tuberculosis and nocardiosis. Therefore, it is recommended to be used to diagnose such patients.
The Effect of Ideology on Translation: English Translation into Persian in Death of a Salesman Play by Arthur Miller
Authors: VALİZADEH Mohammadreza , VAZİFEHKHAH Ahmad Ezzati
Published: May 2021

The main aims of the study are to work out the framework of consciousness and unconsciousness aspects of ideology and their effects on translation. For applying the aforementioned items, the researchers put Death of a Salesman (1949) play by Arthur Miller and its translation by Ali Asqar Bahram Beygi (1984) under scrutiny. Furthermore, the present paper makes an effort to analyze sensory experience, practical, reflective and reflexive aspects at the consciousness level of ideology. This study is a corpus-based, comparative, descriptive and non-judgmental analysis of the English-Persian parallel corpus. The obtained result proved the fact that awareness rising in these two major aspects of ideology for the analysis of the source text (ST) and the target text (TT) help translators to choose the closest equivalence in the social and situational context of the ST and the TT. Moreover, statistical results indicate that the most frequent aspect of ideology is at the consciousness level with 81%.
Conexus: Crime Fiction and the State of the Nation.
Authors:   , Dicks Duncan
Published: May 2021

Conexus: Crime Fiction and the State of the Nation consists of two parts. The first section is the novel, Conexus, which is a practice-based exploration and illustration of crime fiction as state-of-the-nation social commentary. The second is a critical discussion of the requirements of a state-of-the-nation novel that reflects the contemporary, globalised word, and how crime fiction contends with these needs. Conexus follows a range of characters in parallel threads that converge onto a single physical location in Gloucestershire. Ainsley Griffin, a technology journalist, his partner, Chelsey, his grandson, Sundance, and a range of other characters gradually become aware of each other through their use of IT as they investigate a series of undiscovered murders that began with a sophisticated network of paedophiles in the 1990s. The murderer chooses each new victim through the random last act of communication of the last victim, and controls their lives through surveillance hacking before murdering them. The critical underpinning of the thesis discusses the concepts, theories and controversies surrounding the concept of a nation (for example, following the legacy of Gellner’s work, Hroch, and the explorations of Bhabha), emphasising the importance of state control through jurisprudence, of communication technology, and of physical locations and boundaries over the past two hundred years. The relative importance and impact of these concepts is seen to have changed dramatically with the rapid explosion of information technology in the twenty-first-century, requiring a very different approach to literary explorations of a nation. A number of crime novels from the past 25 years are analysed in conjunction with Conexus. The locations and boundaries are discussed with reference to the uncanny implications of the physical as discussed by Freud. Approaches to the incorporation of information technology into crime fiction are explored, and the success of this integration is compared to other literary works. In summary, the suitability of the crime novel as portrayal and summary of the culturally and socially significant trends of the time is assessed.
Topical issues of practice and science
Authors:   International Science Group, Vladlenov Denis
Published: May 2021

The content and reliability of the articles are the responsibility of the authors. When using and borrowing materials reference to the publication is required. Collection of scientific articles published is the scientific and practical publication, which contains scientific articles of students, graduate students, Candidates and Doctors of Sciences, research workers and practitioners from Europe, Ukraine, Russia and from neighboring countries and beyond. The articles contain the study, reflecting the processes and changes in the structure of modern science. The collection of scientific articles is for students, postgraduate students, doctoral candidates, teachers, researchers, practitioners and people interested in the trends of modern science development.
Middle School Students’ Perceptions of Scientists and Views About to Become a Scientist
Authors: Ivgin Aslı Bahar , Akcay Hakan , Kapici Hasan Ozgur
Published: May 2021

It is important to explore children’s perceptions related to scientists for preventing their lack of interest in science and avoidance of science careers. This study aims to reveal middle school students' images of scientists, with an analysis of how those images may be influenced by middle school science textbooks currently use in Turkey. It was also examined students’ opinions related to becoming a scientist. The study is based on a qualitative research methodology. The sample consists of 98 students from a middle school (5th, 6th, 7th, and 8th grade). The data was gathered by four science textbooks, the Draw a Scientist Test (DAST) and an open-ended questionnaire. The findings showed that most of the middle school students think that scientists as men, happy, wearing a lab coat and glasses, working individually in indoor places. Albert Einstein and Isaac Newton were drawn as the most famous scientists. The images of scientists in the science textbooks were mostly men. On the other side, more than half of the students were not sure or not eager to be scientists for their future careers because of negative thoughts on scientific studies and not matching their own characters and the characters that scientists should have.
Efektivitas Penggunaan Laboratorium High Voltage di Politeknik Ilmu Pelayaran (PIP) Semarang
Authors: Hermanto Andy Wahyu , Mubin M. Imroni , Ridwan Achmad
Published: May 2021

Semarang Merchant Marine Polytechnic (PIP Semarang) is a university that provides vocational education in the field of shipping. The high voltage laboratory is a means of supporting the practice of electrical equipment on board a ship based on a high voltage of 6.6 Kv. Based on the results of the researchers' preliminary observations and observations, it is known that the use of the high voltage laboratory during the 2019 school year is very minimal, namely 25.5 hours for 1 year. The purpose of this study is to see the use of the high voltage laboratory at PIP Semarang, what security is used in the use of the high voltage laboratory at PIP Semarang, and the efforts made to overcome the problems used in the use of the high voltage laboratory at PIP Semarang. The research method used in this research is a qualitative method. Data obtained from the results of distributing questionnaires to cadets. In addition, interviews were also conducted with Engineering Study Program lecturers. Secondary data obtained from literature study, observation and documentation. Based on the results of data analysis, it can be denied that the use of the high voltage laboratory at PIP Semarang is still not optimal and effective. This can be proven by the results of the questionnaire recapitulation showing that the use of the high voltage laboratory is 32% very effective, 4% effective, 60% less effective, and 4% ineffective.