sugar beet is one of the most important crops in khorasan razavi, iran, which plays an important role in the economy of this province. so, it seems to be important to study the efficiency of the crop. to analyze the sugar beet efficiency information, two methods including data envelopment analysis (dea) and stochastic frontier analysis (sfa) methods were used. required data were collected from ...

survey of influencial factors on age of puberty of high   school students in neyshabour     m. vafaei [1] , m. sadat hoseini [2] , r. froutan [3]     abstract:   introduction: puberty is a period that the children's body undergo kind of change so children change to puberty.   almost the average age for boy puberty is 12 years old. psychologists said: puberty is eventful obliging for a good...

abstract beet yellows virus (byv), the type member of the genus closterovirus and one of the most economically important yellowing viruses, causes serious losses in sugarbeet. in order to study infection and distribution of beet yellows virus during summer 2007, about 530 samples were collected from beet’s fields in razavi khorasan province (fariman, torbate jam, ghoochan, chenaran, torbate hey...

in a region, optimal allocation of lands to various agricultural products is one of the most important issue associated with optimal use of agricultural resources. meta-goal programming is one of the multiple criteria decision models. this programming provides more flexible decisions for decision makers than other goal programming. in the current study, optimal cropping pattern was determined u...

the arghash area is located 45 km to southwest of neyshabour. the subvolcanic rocks in the area consist of biotite hornblende quartz monzodiorite porphyry, hornblende biotite quartz monzodiorite porphyry, hornblende monzonite porphyry, biotite hornblende monzonite porphyry, monzodiorite porphyry and biotite quartz monzodiorite porphyry units. the volcanic rocks consist of hornblende biotite dac...

In this research seismicity parameters, repeat times and occurrence probability of large earthquakes are estimated for 35 seismic lineaments in Persian plateau and the surrounding area. 628 earthquakes of historical time and present century with MW>5.5 were used for further data analysis. A probabilistic model is used for forecasting future large earthquake occurrences in each chosen lineament....

the major health challenge in the 20th century was to survive, whereas living with greater conditions is the major challenge in the current era. elderliness is a critical stage of life when there is a social call for considering its needs as to improve quality of life of elders. the present study is mainly concerned with quality of life of elders in urban areas of neyshabour. to this end, 150 e...