background and purpose: airborne fungi are one of the most important agents responsible for triggering allergic reactions such as rhinitis and severe asthma. this study was conducted to analyze and monitor the prevalence and distribution patterns of atmospheric fungal aerosols in the air of qazvin during winter of 2012. materials and methods: in the current descriptive study, the incidence and ...

background: the aim of the present study was to determine the prevalence of ectoparasite infestations in stray dogs in mazandaran, gilan and qazvin provinces in fall and winter in 2013(december to march). methods: seventy dogs in 2013, from these provinces were examined for ectoparasite infestation and diagnosis of them based on parasitological methods and identification keys was done. results:...

The medical care system in China has experienced significant changes during three decades of reform, and thus result in a need to investigate the effects of medical reform. This paper investigates the technical efficiency of Chinese hospitals in 31 provinces during the period from 2002 to 2013 by proposing a new global generalized directional distance function (GGDDF) approach taking account of...

Investigation of soil properties like Cation Exchange Capacity (CEC) plays important roles in study of environmental reaserches as the spatial and temporal variability of this property have been led to development of indirect methods in estimation of this soil characteristic. Pedotransfer functions (PTFs) provide an alternative by estimating soil parameters from more readily available soil data...

We study information transfer routes among cross-industry and cross-region electricity consumption data based on transfer entropy and the MST (Minimum Spanning Tree) model. First, we characterize the information transfer routes with transfer entropy matrixes, and find that the total entropy transfer of the relatively developed Guangdong Province is lower than others, with significant industrial...

BACKGROUND Endodontic procedures such as root canal treatment would be at the risk of failure like other medical interventions due to any unsuitable conditions. This has a causative effect in making the procedure more complicated to resulting in weak prognosis finally. Technical errors such as ledge, perforation, obstruction, broken instrument, etc. make infection control too hard or impossible...

Background: Dental caries is extremely prevalent and one of a significant public health problem among children throughout the world. Data regarding the prevalence of dental caries among Iranian preschool children are very limited. The objective of this research is to determine the frequency of dental caries among preschool children of Qazvin, Iran and the related factors to caries. Subjects and...