Introduction: Small field dosimetry is challenging for radiotherapy dosimetry. measurement of the output factor in the air and water (Sc, Scp) is one of the input parameters for commissioning of treatment planning systems and beam modeling. The aims of this study are to measured Sc,Scp for small fields with EBT2 and Ion chamber and design a appropriate mini-phantom for small fi...

introduction radiotherapy with small fields is used widely in newly developed techniques. additionally, dose calculation accuracy of treatment planning systems in small fields plays a crucial role in treatment outcome. in the present study, dose calculation accuracy of two commercial treatment planning systems was evaluated against monte carlo method. materials and methods siemens once or linea...

The purpose of this research was socioeconomicanalysis of farms using primary data in two villages of Mymensingh Sadar. A total of 60 farms including 20 small, 20 medium and 20 large were randomly selected for the study. Socioeconomic analysis showed that indebtedness was higher in large farms than those of small and medium ones. Large farms also engaged more in farm activities than others. All...

We have analyzed changes in the acoustic oscillation eigenfrequencies measured over the past 7 years by the GONG, MDI and LOWL instruments. The observations span the period from 1994 to 2001 that corresponds to half a solar cycle, from minimum to maximum solar activity. These data were inverted to look for a signature of the activity cycle on the solar stratification. A one-dimensional structur...

sugar beet is one of the major products in qazvin plain that allocated most of planting areas to itself after wheat, barley and corn. in recent years, restriction on water resources decreased sugar beet planting area in this plain. therefore, in this study, the effects of increase in sugar beet planting area on planting pattern, grower's gross profit, and inputs utilization under water sho...

this study examines the effects of organizational culture (oc) on corporate entrepreneurship (ce) among small and medium enterprises (smes). first, some models were developed to measure organizational culture and corporate entrepreneurial activities. these models measure the key factors of oc that influence personnel to initiate ce and different entrepreneurial activities that smes applied for ...

In-medium effects in photon excitation of the S11 resonance from nucleon and its decay to η-meson using the RMF approach is studied. We examine the in-medium effects by varing the Dirac fields of the nucleon and the S11 resonance separately. We obtained a conclusion that the Dirac fields of the nucleon, which reduces the nucleon effective mass, enlarge the width of S11 resonance, and small Dira...

the aim of this study was to determine the relationship between entrepreneurial personality characteristics and small and medium-sized sport enterprises start-up (smses). the methodology of this study was descriptive-correlation. population consisted of small and medium-sized sport enterprises (n=1500) and their owners and/or managers were randomly selected as the sample (n=258). for data colle...

The study investigates the role of root glutathione (GSH) content and glutathione S-transferase (GST) activity in the response of hard wheat (Triticum durum Desf. variety Carioca) induced by different doses of phosphorus KH2<span style="font-s...

salinity is a phenomenon that does not satisfy the crop water requirement and leads reduction vegetation. to control of this phenomenon requires appropriate management and monitoring of spatial and temporal salinity variations from the past to the present in this study the spatial and temporal changes of soil salinity of irrigation and drainage network located in garmsar, iran, is investigated ...