v.8 n.4 May

Status of thenearsurface Cu, Pb, Zn concentrations in Ipomoea pes-caprae collected from East Coast of India.

Bishruti Chowdhury, Sufia Zaman, Prosenjit Pramanick, Ricardo Gobato, and Abhijit Mitra.

Parana J. Sci. Educ., v.8, n.4, (1-8), May 1, 2022.

DOI: tiny.cc/PJSE24476153v8i4p001-008

Abstract

The Ipomoea pes-caprae along with water samples were collected from two different sites of east coast of India, namely Marina Beach, Chennai in South India and Digha, West Bengal in North east India during 2018 to 2022. In both water and biological samples, a rising trend is observed except during 2020, which is due to COVID-19 lockdown phase when all the industrial operations, fishing activities, tourism activities were temporarily shut down. The overall results prove the eco-restoration of coastal water quality during COVID-19 lockdown phase.The potential of I. pes-caprae to bioaccumulate heavy metals in their vegetative parts have two importance’s, viz. (i) the species can act as an indicator of heavy metal pollution, and (ii) the species can act as an agent of bioremediation. Hence, it is the need of the hour to lower the levels of heavy metals in coastal water through mass scale plantation of potential floral species as it is not only eco-friendly, but also cost-effective.

Characteristics of Intercultural Problems in Vulnerable Groups of Children in Preschool Age (Mini Review).

Neli Krasteva, and Yulia Doncheva.

Parana J. Sci. Educ., v.8, n.4, (9-15), May 1, 2022.

DOI: tiny.cc/PJSE24476153v8i4p009-015

Abstract

The publication considers the intercultural projection of education as an effective tool for achieving an inclusive environment. In its broader framework is the issue of children from vulnerable groups who have equal access to education, a prerequisite for preventing social exclusion. In this regard, from preschool age the child teacher seeks effective models for working with children, especially those who have found themselves in marginalized communities, creating conditions for equality and inclusion, regardless of their origin, opportunities and differences. The characteristics of intercultural issues for vulnerable groups of preschool children postulate the need to acquire knowledge about the basic characteristics of intercultural relations, respecting the importance of each human person in the diversity of its identities.

Universe at a constant speed of light.

Valery Borisovich Morozov.

Parana J. Sci. Educ., v.8, n.4, (16-19), May 1, 2022.

DOI: tiny.cc/PJSE24476153v8i4p016-019

Abstract

Within the framework of the classical general theory of relativity, a conformally flat metric with a constant speed of light is considered. The Einstein tensor of this metric leads to a non-trivial Einstein equation without a cosmological constant, on the right side of which is the energy-momentum tensor, which depends only on the parameter v(t). The cosmological redshift in the Universe with such a metric arises without involving the hypothesis of the expansion of the Universe. The function v(t) > 0 can implement any dependence of the redshift on the time required for the signal to travel from the galaxy to the observer. Einstein's stationary equation is found, the solution of which is a space with a cosmological redshift obeying the Hubble law.