effects were studied of 200 ppm silver and copper nano-suspensions, with size range from 20 to 80 nm, on the hardness of particleboards produced at an industrial scale at the iran-choob factory, iran. metal nano-suspensions were added to the mat at two levels of 100 and 150 milli-liters/kg dry weight wood particles, and the results were compared with those of the control panels. results showed ...

We present a detailed analysis of the Galaxy Stellar Mass Function (GSMF) of galaxies up to z = 2.5 as obtained from the VIMOS VLT Deep Survey (VVDS). Our survey offers the possibility to investigate it using two different samples: (1) an optical (I-selected 17.5 < IAB < 24) main spectroscopic sample of about 6500 galaxies over 1750 arcmin 2 and (2) a near-IR (K-selected KAB < 22.34 & KAB < 22....

background the critical role that the board plays in governance of universities clarifies the necessity of evaluating its performance. this study was aimed to evaluate the performance of the boards of medical universities and provide solutions to enhance its performance.   methods the first phase of present study was a qualitative research in which data were collected through face-to-face semi-...

This paper presents a new empirical equation relating horizontal visibility and PM10 dust concentrations. The new empirical equation (IZO-Eq) is derived from observations performed at the Izaña Atmospheric Observatory (IZO, 28.30oN, 16.49oW, 2367 m a.s.l., Tenerife, Spain), recorded during Saharan dust outbreaks from 2003 to 2010. A filter based on relative humidity, present-weather and aerosol...

conclusions because there was no significant difference in the effectiveness between hospitals with and without board of trustees, decision-makers must monitor how the commands are carried out to make board of trustees for hospitals and make sure its success in achieving its objectives. results among the five variables related to the effectiveness, safety showed to have the highest weight and m...

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nowadays in consequence of widespread changes of corporate governances, chairman of the board has more real authorities on company decisions and due to his significant role in board leadership, is under the pressure of performance expectations. however, these changers are not made as it deserves in iran and in spite of various effects of chairman leadership on board culture – especially team pr...