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Publisher: Asian Business Consortium   (Total: 5 journals)   [Sort by number of followers]

Showing 1 - 5 of 5 Journals sorted alphabetically
ABC J. of Advanced Research     Open Access  
American J. of Trade and Policy     Open Access   (Followers: 3)
Asian Business Review     Open Access   (Followers: 2)
Asian J. of Applied Science and Engineering     Open Access   (Followers: 1)
Engineering Intl.     Open Access  
Journal Cover Engineering International
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 2409-3629
   Published by Asian Business Consortium Homepage  [5 journals]
  • The Nature of Naked Singularity in Cosmology

    • Authors: Haradhan Kumar Mohajan
      Pages: 9 - 26
      Abstract: This paper discusses aspects of a naked singularity. If a star has exhausted its nuclear fuel, and it exceeds Chandrasekhar limit then it must undergo gravitational collapse and ultimately it forms black hole. A black hole is a space from where no massive particle or no signal comes to the external observer. As a result space-time singularity is formed; this must be hidden behind the black hole region which is called the cosmic censorship hypothesis, first proposed by Roger Penrose, which cloths the singularity to remain invisible to the external observers. It has not been possible, to obtain a proof despite many attempts to establish the validity of cosmic censorship and it remains an open problem. Hence, general relativity supports that naked singularity may be formed. A naked singularity implies that singularity is visible to an external observer. Sometimes it is not visible to the external observers, but it could be observable to the interior observers of the black hole region. This type of singularity is called local naked singularity.
      PubDate: 2017-02-12
      DOI: 10.18034/ei.v5i1.976
      Issue No: Vol. 5, No. 1 (2017)
       
  • Narrow Band Gap Ternary Absorber Layer for Solar Cell for Small Business
           Enterprises in Equatorial Africa

    • Authors: Cliff Orori Mosiori
      Pages: 27 - 36
      Abstract: According to recent studies, on the Daily nation newspaper, in Kenya of 6th January 2017 featured the story, the number of people doing the same thing in surrounding villages was so high that many of them had to leave their phones behind at the charging centre (for up to three days) before returning to pick them. To fight darkness, up to 80 percent of Africans depend on personal generators, candles and kerosene (paraffin) lamps to provide basic lighting. Let’s not even talk about all the other things we desperately need electricity for – iron clothes, pump water, charge mobile phones etc. In this article, we shall focus on the types of solar cell materials that can be used to fabricate solar cell to be installed on roof tops to generate electricity used by individuals and households. Photovoltaic devices are used to convert solar radiation energy into electrical forms of energy for various uses. Current research is geared towards using thin films with wide band gaps to allow optimum penetration of radiation within the VIS - NIR region. Inorganic wide band gap, CdxZn1-xS thin films and narrow band gap, PbS thin films were optimized through chemical solution technique in this study. Wide band gap thin films of CdxZn1-xS were grown at about 820C while those of narrow band gap thin films of PbS were grown at room temperature utilizing aqueous conditions. Their optical constants were investigated and found to be suitable for solar cells applications. 
      PubDate: 2017-02-19
      DOI: 10.18034/ei.v5i1.977
      Issue No: Vol. 5, No. 1 (2017)
       
 
 
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