BACKGROUND The Varroa destructor mite is considered as a major pest of honey bees Apis mellifera. The rapid spread of Varroa mites among bee colonies may be due to several factors, including drifting of infested bees, movement of bee swarms, and robbing of weakened colonies. Disease spread and predisposing the infested bees to other diseases lead to high economic losses in beekeeping industries...

In order to investigate and consider the feasibility of the establishment of knowledge management at Payam nour universities of Golestan province elicited from reviewing the research literature, the researchers  endeavored to identify the factors affecting  the establishment of  knowledge management  and the knowledge management components, and then to consider the way of their influence as wel...

of yore, literary works have reflected social relationship and interaction in communities. the extent of this mutual impact depends on type of works and knowledge and information of their authors. golestan book of saadi that is considered as an example of persian speech art in both prose and poetry fields comprises of unique collectanea of cute implications in terms of content that resulted fro...

Aquatic organisms are used extensively in water quality assessment and ecosystem health quantity scale in streams. Mohammad-Abad creek (Golestan Province) is accounting one of the tributary streams of Gorgan-Rood River. In this study, 21 sites were selected along 25 kilometers of stream long according to ingredient pollutants. Sampling took place each 45 days. After segregation and identificati...

Background: Coronavirus disease 2019 is a new viral and in short period, it has affected the world various economic, social, health aspects. This had high mortality rate at time of its occurrence. article aims to determine related factors survival inpatients with COVID-19 northern Iran. Methods: In this retrospective study, data 3480 patients laboratory confirmation virus caused by infection 17...