core dental journals according to production and citation rates dr. sdj. ghazi mirsaeid * *assistant professor of medical library and information sciences dept., faculty of allied medical sciences and dental research center, tehran university / medical sciences. abstract background and aim: given the rapid expansion of dental journals in one hand, and limitation of resources on the other, it ma...

the present article studies the appearnace of iranian authors in sci database for the 1993-1997 period. it tries to present an actual picture of scientific activities in iran and the world. for this purpose, scientific information of iranian origin in form of articles dealing with basic sciences, were extracted. irans position has been compared with the rest of the world. it was found that 0.1 ...

the article addresses the contemporary quest for inexpensive carbon feedstocks to be used for cost efficient biomediated polymer production; such polymers can potentially be applied in the food technology sector, mainly for packaging purposes. in particular, the work shines a light on crude glycerol, a surplus stream of the globally tremendously emerging biodiesel industry. crude glycerol can b...

An analysis of attenuation and absorption lengths of the electron number using data of the KASCADE air shower experiment is presented. The following methods are used to determine these quantities: The method of constant intensity, the attenuation of the electron number at the knee with increasing atmospheric depth, the decrease of the flux at a constant electron number with increasing zenith an...

A growing number of social scientists fear that marriage may be on the rocks and few doubt that matrimony, as we have known it, has undergone a wrenching period of change in the past several decades. Andrew Cherlin, a leading sociologist of the family, speaks of "the de-institutionalization of marriage," conceding a point to conservative commentators who have argued that marriage and the family...

BACKGROUND Biomedical scientists need to access figures to validate research facts and to formulate or to test novel research hypotheses. However, figures are difficult to comprehend without associated text (e.g., figure legend and other reference text). We are developing automated systems to extract the relevant explanatory information along with figures extracted from full text articles. Such...