Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2738

Table of Content: 17 December, 2012; 7(49)

December 2012

Role of reactive oxygen species in the pathogenesis of cardiovascular disease

Oxidative stress, in recent times, appears to be a major underlying risk factor in the occurrence of major diseases such as cardiovascular diseases (CVD) and inflammatory diseases. During oxidative stress, an overall dysfunction of the balance between the production of reactive oxygen species (ROS) and the antioxidant defence mechanism occurs and a shift is obtained in favour of ROS production.  Consequently, this...

Author(s): O. B. L. Alinde, A. J. Esterhuyse and O. O. Oguntibeju

December 2012

Integrated Water Resources Management work in the Euphrates and Tigris River-Basin

The water crisis in the Middle East is worsening. The indicators of this crisis include increasing population, scarce and unequally-distributed water resources, competing claims of co-riparian countries, conflicts in utilizing of transboundary waters, and deficiencies in international water law. The pressure that these problems cause in terms of water resources is most evident in transboundary river basins. These...

Author(s): Osman Devrim ELVAN

December 2012

Innovations in public sector-led agricultural extension

This paper briefly analyse the genesis, development and change in public sector-led extension approaches in India showing its temporal pattern, emerging innovations in extension approaches and the way forward. It discusses decentralized, community based, pluralistic extension approaches and their opportunities as well as limitations in changing agricultural and natural resources scenario. The paper gives emphasis on the...

Author(s): Directorate of Water Management (ICAR), Bhubaneswar- , Odisha, India.

December 2012

Cat swarm optimization clustering (KSACSOC): A cat swarm optimization clustering algorithm

Clustering is an unsupervised process that divides a given set of objects into groups so that objects within a cluster are highly similar with one another and dissimilar with the objects in other clusters. In this article, a new clustering method based on cat swarm optimization was proposed to find the proper clustering of data sets called K-means improvement and Simulated Annealing selection based cat swarm...

Author(s): Yongguo Liu,, Xindong Wu and Yidong Shen

December 2012

Entrainment mass transfer in annular flow regime of two-phase carbon dioxide

Having more heat transfer rate and lower pressure drop, along with better environmental treatment, carbon dioxide has drawn the attention of many researchers. Most of the two-phase heat transfer analyses are involved in estimation of dry-out phenomenon in order to avoid heat transfer drops. Entrainment, because of having great influence on dry-out occurrence, is studied in this article. Most of the available models for...

Author(s): Zahra Baniamerian, Ramin Mehdippour and Cyrus Aghanajafi

December 2012

Effects of Er:YAG laser conditioning on the microleakage of class 2 composite restorations

The purpose of this study was to evaluate the effects of thermocycling and Er:YAG laser conditioning on the microleakage of silorane, packable and nano-filled composites. 512 Class 2 cavities were prepared on 256 premolars. The teeth were assigned to 8 groups 1= Filtek Silorane, 2= Filtek Silorane with laser conditioning, 3= Aelite LS with acid conditioning, 4= Aelite LS with laser and acid conditioning,...

Author(s): Nuray Attar, Ceren Ozge Bicer, Melek D. Turgut and Yonca Korkmaz Ceyhan

December 2012

Cluster-assembled ZnO films prepared by electrochemical deposition on copper substrate

Cluster-assembled ZnO films were synthesized by using electrochemical deposition technique with various reaction times. Zinc nitrate dissolved in de-ionized water was used as a precursor of ZnO film. The as-synthesized cluster-assembled ZnO films were performed on a copper plate used as a substrate at room temperature. The stabilized high electric field of 4 kV/m was applied in the process. Field emission scanning...

Author(s):   Sucheewan Krobthong, Auttasit Tubtimtae, Chawalit Bhoomanee, Supab Choopun, Suphadate Sujinapram and Sutthipoj Sutthana

December 2012

Variation of clay brick colors and mechanical strength as affected by different firing temperatures

This study was conducted to quantitatively determine the effect of firing temperature on color formation and to assess the relationship between mechanical strength and color components of clay bricks. Redness index, chroma, hue and color difference (∆E) of bricks fired at 700 to 1050°C in steps of 25°C under free access of air were measured with a colorimeter. Relations between temperature and each of the...

Author(s): Sedat Karaman, Hikmet Gunal  and  Zeki Gokalp