the first step to quantify crop phenology is precise estimation of the parameters, which affect it. these parameters are mainly temperature and photoperiod. this study was conducted with eight sowing dates to quantify response of stem elongation rate (ser) to temperature and photoperiod in wheat (tajan cultivar). the regression models fitted to ser against temperature were flat, logistic, quadr...

In China, with increasing maturity of media and continuous emergence of new media, demand on media managers is urgent day by day. However, media management itself is a subject with combination of compound, pluralism, theory and practice. It is easy to train common journalists, but it is quite difficult to train media talents of high quality proficient in management. This article is going to mai...

A major concern for those taking care of preterm infants is to ensure that nutritional intake meets requirements, thereby ensuring that poor nutrition is not rate limiting on outcome. However, establishment of an adequate intake is diYcult during early life in the sick infant. Dietary needs also vary, depending on maturity and nutritional and clinical status. Furthermore, measures of outcome ar...

A major concern for those taking care of preterm infants is to ensure that nutritional intake meets requirements, thereby ensuring that poor nutrition is not rate limiting on outcome. However, establishment of an adequate intake is diYcult during early life in the sick infant. Dietary needs also vary, depending on maturity and nutritional and clinical status. Furthermore, measures of outcome ar...

abstract in order to study of relationship between timing and duration of phenological events and grain yield of wheat plants, an experiment was performed at moghan college of agriculture and natural resources-university of mohaghegh ardabili research farm during 2010-2011. the plant materials (81 wheat cultivars) were evaluated using a simple lattice design with two replications under irrigate...