Biochar improves soil physical, biochemical, and microbial properties, leading to the amelioration of fertility, which, in turn, results better growth yield crop plants. The current study aimed evaluate whether using different levels biochar can enhance characteristics plant attributes. Accordingly, an experimental was conducted 2022 a randomized complete block design with four replications (n ...

The emergence of the COVID-19 pandemic in 2020 led to many changes people’s lifestyles and governments’ policies worldwide. In education area, there has been an increase use online learning due necessity social distancing interruption transmission information. present study aimed determine differences between in-person systems regarding teachers’ perceptions educational knowledge pedagogical sk...

Protected areas are a mainstay of biodiversity conservation. All over the world, plant is at risk and every year number threatened species increases dramatically. Many these endemic. Sorkhabad Area situated in Zanjan Province, NW Iran, located Irano-Anatolian global hotspot. The aim this study to investigate endemic vascular species, classify local rarity identify hotspots them area. 81 belongi...

the effect of educational program based on basnef model on the pregnant mothers` physical activity     shakeri m [1] *, fekri sh [2] , shahnavaz a [3]     received: 05 sep, 2012 accepted: 06 dec, 2012     abstract   background & aims : regular physical activity is an important role in pregnancy, therefore this investigation was carried out in order to assess thee effect of educational program b...

The effects of nitrogen and phosphorus levels on the physiological traits, yield, seed yield rapeseed (Brassica napus L.), were studied in a farm research project Zanjan University. Three (0, 100, 200 kg/ha) three 75, 150 considered. results showed that an increase level caused leaf chlorophyll content so application kg/ha increased leaves until mid-grain filling stage. Nitrogen lowered stomata...

The prevalence of atopic disease in recent decades has been dramatically increased. It has been suggested that BCG vaccination may protect against development of allergic diseases.The purpose of this study was to identifying relation between scar of BCG vaccine and atopy. This cross-sectional study was done in 1000 children, 10-15 years of age, in Zanjan city. One thousand children (501 girls a...

Background and aims: Poor quality of sleep and daily activity in elderly people are associated with many physical and psychological problems that increase disability and need to use health services. The aim of this study was to determine the relationship between daily activities and quality of sleep in the elderly people. Methods: This Study was a correlational-descriptive study on390 elderly p...