summarythe explanation of the elastic, or velocity structure of the earth has long been a goal of the world’s seismologists. for the first few decades of seismological research, the investigation on velocity structure was restricted to the determination of one-dimensional models of the solid earth and of various regions within it. seismologists are currently obtaining three dimensional velocity...

remains of fossil herbivorous mammal from families like elephantidae, rhinocerotidae, giraffidae, bovidae and equidae have been studied systematically from a new fossiliferous horizon from the ilkhchi area in the southeastern high foothills of sahand. genera such as hipparion, gazella, samotherium, chilotherium and choerolophodon and some undetermined specimens are identified and reported. base...

An investigation was carried out in some areas of Golestan Province including: Loveh forest, Soosara, Daland forest park, Tooskestan; Gilan Province including Siahkal and Asalem forests; Arasbaran and landscape of urban trees during 1999–2007. In this investigation, based on some morphological, physiological and molecular characteristics and also comparison with standard isolates two species Op...

Proper understanding of the diversity and natural structure woody species impacts human interventions are prerequisites for maintaining remaining forests as well restoration deforested degraded areas. This research was conducted to document impact on population in Arasbaran biosphere reserve Iran due limited insufficient knowledge. The study area divided into three adjacent sampling areas low, ...

abstract the purpose of this study is to examine the economic impacts of developing and introducing almond late flowering cultivars during 1968 to 2019 years in iran, which developed in sahand horticultural research station using the economic surplus model and field and time series data. the estimation of shift parameter identifies that almond late flowering cultivars make almond supply curve m...