background: letters to the editor provide an opportunity for readers to state their views about published articles. research on this issue has been mainly on western journals and there is no study on the iranian journals. the present study aimed to investigate this subject in iranian biomedical journals. materials and method: this was a bibliometric study. the databases of iran medex, medlib, a...

The dependence of the lateral distribution of Cherenkov light in simulated extensive air showers to the energy and the mass of the primary cosmic rays has been studied. It has been shown that a previous claim about mass independent proportionality of shower energy to the total Cherenkov photon number is not valid in energies below EEAS ~ 1014 eV. We have found that the core distance of the so c...

One of the most important steps in teaching English is teaching its alphabet to the learners. Implementing the best method will highly help teachers to achieve acceptable results in helping students to read better and faster. Two basic methods are frequently used by Iranian educators. Some start by the name of the letters and introduce the sounds that they symbolize later, while others are thos...

Cosmic Rays (CR) travel at speeds essentially indistinguishable from the speed of light. However whilst travelling through magnetic fields, both regular and turbulent, they are delayed behind the light since they are usually charged particles and their paths are not linear. Those delays can be so long that they are an impediment to correctly identifying sources which may be variable in time. Fu...

the dependence of the lateral distribution of cherenkov light in simulated extensive air showers to the energy and the mass of the primary cosmic rays has been studied. it has been shown that a previous claim about mass independent proportionality of shower energy to the total cherenkov photon number is not valid in energies below eeas ~ 1014 ev. we have found that the core distance of the so c...

the poets of lyrical poetry usually take advantage of various ways. one method used to compose love poetry is usage of alphabetic letters. other than the combination of letters in order to create new words and meanings, arabic letters of alphabet basically have another literary role – discussed in this paper – that of outward shape of the letter which has been used to create the most beautiful ...

Introduction: Otolaryngology is a field with a high referral rate; however, there is a dearth of research on the quality of referral letters written in this field. This study was carried out to explicitly assess the quality of referral letters, more specifically in the field of otology.   Materials and Methods: Two otologists assessed referral letters written by general ...

1. introduction composition and letter writing are some of the most important issues that have been addressed in the past. especially at the ninth and tenth centuries hegira (teimurian era), valuable works have been composed in this regard, as some have reviewed and attended to the structure, while others have collected the original and content of the letters by the past eminent scholars. these...