v.6 n.3 April

Parana Journal of Science and Education. v.6, n.3, April (2020).

Summary

Articles

Estudo de como é representado o conceito de flora de alguns livros didáticos e paradidáticos no Brasil.

(Study of how the concept of flora is represented in some didactic and paradidactic books in Brazil).

Amauri Betini Bartoszeck and Iara da Glória Marcos.

Parana J. Sci. Educ., v.6, n.3, (1-12), April 15, 2020.

DOI: doi.org/10.5281/zenodo.3778707

Abstract

The textbooks are an important pedagogical tool and most of the times represent the main didactic support to teaching and learning a school subject in the classroom. This investigation aimed to verify in Natural Science and Biology textbooks how the contents of Botany are represented. This outline of Biology intended to improve natural science issues for children and adolescents pupils. Five strands were used within ten parameters for the analysis of the selected textbooks. Only 7.7% of the analyzed books showed further readings and just 15.4% provided abstracts. However, more than 75.0% of the textbooks included hands-on experiments. Further relevant topics in Botany should be suggested to help teachers select the best Natural Science and Biology books which must contribute to science literacy concerned to plants in general.

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Study of Characteristic Polarization and the Frequencies Generated in Interaction of Synchrotron Radiation Emission and Actinium Nanoparticles in Human Cancer Cells, Tissues and Tumors Treatment Process.

Alireza Heidari, Katrina Schmitt, Maria Henderson and Elizabeth Besana.

Parana J. Sci. Educ., v.6, n.3, (13-47), April 15, 2020.

DOI: doi.org/10.5281/zenodo.3778843

Abstract

In the current study, thermoplasmonic characteristics of Actinium nanoparticles with spherical, core–shell and rod shapes are investigated. In order to investigate these characteristics, interaction of synchrotron radiation emission as a function of the beam energy and Actinium nanoparticles were simulated using 3D finite element method. Firstly, absorption and extinction cross sections were calculated. Then, increases in temperature due to synchrotron radiation emission as a function of the beam energy absorption were calculated in Actinium nanoparticles by solving heat equation. The obtained results show that Actinium nanorods are more appropriate option for using in optothermal human cancer cells, tissues and tumors treatment method.

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Californium Nanoparticles and Human Cancer Treatment: Commemorating the 100th (1920–2020) Anniversary of the California South University (CSU).

Alireza Heidari, Katrina Schmitt, Maria Henderson and Elizabeth Besana.

Parana J. Sci. Educ., v.6, n.3, (48-83), April 15, 2020.

DOI: doi.org/10.5281/zenodo.3778889

Abstract

The calculations showed that in Californium nanoparticles, light absorption in Plasmon frequency causes to increase in temperature of the surrounding environment of nanoparticles. In addition, it showed that adding a thin silica layer around the Californium nanospheres increases their temperatures. Calculations of nanorods showed that due to ability for shifting surface Plasmon frequency toward longer wavelength as well as more increase in temperature, this nanostructure is more appropriate for medical applications such as optothermal human cancer cells, tissues and tumors treatments. In the current study, thermoplasmonic characteristics of Californium nanoparticles with spherical, core–shell and rod shapes are investigated. In order to investigate these characteristics, interaction of synchrotron radiation emission as a function of the beam energy and Californium nanoparticles were simulated using 3D finite element method. Firstly, absorption and extinction cross sections were calculated. Then, increases in temperature due to synchrotron radiation emission as a function of the beam energy absorption were calculated in Californium nanoparticles by solving heat equation. The obtained results show that Californium nanorods are more appropriate option for using in optothermal human cancer cells, tissues and tumors treatment method.

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Impact of COVID-19 related shutdown on atmospheric carbon dioxide level in the city of Kolkata.

Abhijit Mitra, Tanmay Ray Chaudhuri, Ankita Mitra, Prosenjit Pramanick and Sufia Zaman.

Parana J. Sci. Educ., v.6, n.3, (84-92), April 15, 2020.

DOI: doi.org/10.5281/zenodo.3779156

Abstract

We studied the atmospheric CO₂ levels at 12 sites in the city of Kolkata during April, 2019 (pre-COVID-19 phase) and April, 2020 (lockdown phase due to COVID-19). Significant temporal variation of CO₂ level was observed (p < 0.01), but no statistically significant variation was observed between sites. The interpretation of the results can be substantiated with the lockdown effect due to COVID-19 in the city on account of complete closure of industries, transports, markets, shopping malls, recreation units, construction works etc. which are the main sources of CO₂ emission. The patchy vegetation in some pockets of the city (like Deshbandhu Park and Tala Park) did not allow the atmospheric CO₂ level to have a deep dip as the previous CO₂ level in these sites were not very high due to carbon storage potential of the floral species.

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The Inside Story of Coronavirus Pandemic.

Ricardo Gobato and Abhijit Mitra.

Parana J. Sci. Educ., v.6, n.3, (93-100), April 15, 2020.

DOI: doi.org/10.5281/zenodo.3779171

Abstract

Coronavirus are RNA virus of the order of the Nidovirales of the family Coronaviridae. The average incubation period for coronavirus infection is 5 days, with an interval that can reach up to 16 days. Influenza H1N1, H5N1, Sars, Mers, Ebola, Coronavirus, are all zoonotic viruses, that is, they have been transmitted to humans by animals. For data on the number of infected 83000, 151767, 167518 and 173344 on March 1, 16, 18 and 19, 2020, respectively, released by WHO (World Health Organization), the number of dead d and infected i confirmed according to the data released daily on the network, rises exponentially to the initial d_o of dead and i_o infected initially confirmed, d = do.e^0.049.t and i = io.e^0.0409.t , respectively, where t is equal to the number of days, for t = 1 to n. Although the development and production of the potential vaccine has been incredibly rapid, its evaluation will take considerable time. All participants will be followed for 12 months after the second dose to collect the data that researchers initially need to find out if it is safe and effective.

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