Physical Sciences and Engineering

Volumetric expansions of accelerating unstable cosmological models with a quadratic form of equation of state

In this paper, we derive the field equations towards f (R) gravity (where is the Ricci scalar) with the help of a locally rotationally symmetric spatially homogeneous and anisotropic Bianchi type-I space-time, in the presence of perfect fluid with Quadratic form of Equation of State. Here we obtained the solutions of the field equations using volumetric power and exponential law of expansion, under some specific plausible physical conditions. The stability factor of the model is initially positive which satisfy that the velocity of sound should be less than the velocity of light i.e.

A inovação frugal no Brasil: Uma revisão sistematica de literatura

Frugal innovation is a current topic that deals with the ability to create more economic and social value using fewer resources. It can be understood as the ability to do more with less and it has become a promising business in developed economies. It seeks to rethink ways of acting in organizations in order to generate value for society through goods and services supply, besides worrying about the preservation of the environment.

Considerations of mining in tapajós basin and impacts on munduruku land

This paper aims to analyze the extent which it is possible to establish actions that lead to sustainable development, considering social and environmental conflicts issues present in the process that involves mining issue in the Tapajós River and regional infrastructure integration works promoted by IIRSA, through Programa de Aceleração do Crescimento (PAC). The study will analyze the mineral exploration issue in the Tapajós river basin and in environmental conservation areas. It will also examine how the State’s role in these conflict areas is given.

Physics prove the heavenly religion of islam

We have known the theory of the Big Bang, theoretically and experimentally. The gluons (particles) are the light of God. Quarks are the atoms of God. We discovered the existence of this theory in the Holy Quran, which existed about 1400 years ago, and we have identified the verses that represent this theory. We relied on the rule / part to prove all / to prove that the Holy Quran is from God who has all knowledge.

(Qcd)t is very good for quark – gluon - plasma

We have defined the non-abelian pure gauge theory SU (3) on a torus. Fourier modes are discrete throughout this definition. For enough small size, we have treated the non-glue ball modes as a perturbation of zero modes. Infra-red singularity is not appearing throughout the discrete momentums. The temperature depending contributions of the effective potential of the non-abelian glueball gauge fields are continuously calculated by us, for the first time on an asymmetric torus , till the fourth grade of gauge fields.

The importance of the practice of physical activity in the third age

The life expectancy of the Brazilian population has increased steadily in recent decades, leading to a greater number of elderly people. This population needs special attention as to their quality of life. The practice of physical activities, coupled with a good diet and the assistance of a good Physical Education professional, are predominant factors for the prevention of diseases caused by old age, besides stimulating and passing adequate confidence to the elderly in the practice of these activities.

Production of lignocellulosic ethanol from waste paper review on production technology

Waste paper can be found in cities of any country. The possibility of its reuse has moved several researchers to the development of new technologies with the capacity of transforming this waste into economically viable and environmentally sustainable energy that could reduce the use of fossil fuels. The production of ethanol from lignocellulosic biomass from paper waste has been identified as a promising technology with low processing costs and good yield.

Brazilian scenery of adobe: analysis about production and research in the period 2008-2018

The use of adobe as an important technique for producing houses goes back to the earliest times and lasts until the present day. In Brazil, the technique was widely used during colonial period, going through several sceneries and tendencies, having its use declined from Industrial Revolution by the offer of new materials more competitive and apparently with more advantage.