The present article shows that all scientific texts included in journals, magazines, and newspapers are vulnerable to the penetration of hedges and boosters.  However, it was found that scientific texts in the three corpora tended to open up the possibilities of alternative voices rather than narrowing them down. The relatively higher frequency of occurrence of hedges in comparison with booster...

The application of stable isotope analysis (SIA) has become a standard scientific approach in Agricultural and Ecological researches and, more in general, in several disciplines such as biology, botany, zoology, organic chemistry, climatology, and nutrition. The main objectives of this paper are (1) to provide a simple definition of stable isotopes and (2) to illustrate analytical measurement m...

Nutrigenomics applies genomic technologies to study how nutrients affect expression of genes. With the advent of the post genomic era and with the use of functional genomic tools, the new strategies for evaluating the effects of nutrition on production efficiency and nutrient utilization are becoming available. Nutrigenomics plays an efficient role in various fields of animal health like nutrit...

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the present study aims to offer a constructivist/realistic vision toward the nature and elements of science according to the historical evolution of philosophical perspectives on science. this is done with the aim of revising in science education. according to the findings obtained by this study a two-dimensional model is proposed for explaining elements of science and the related essential cha...

the present article on the ancient science of medicine, studies on one hand the emergence of this science and on the other hand its development and compilation. the article also researches the development of medicine in islam, muslim medics and islamic universities in which this science has been taught. finally the article discusses the history of medicine after the emergence of islam in iran.