The natural light conditions above the Arctic Circle are unique in terms of annual variation creating special growth for crop production. These include low solar elevations, very long daily photosynthetic periods, midnight sun/absence dark nights, and altered spectral distribution depending on elevation. All these factors known to affect metabolism plants, although their influence northern plan...

background: it has been prover that the prevalence of experiencing job related stress is very high among the dentists. this stress can be the result of factors such as poor lightening of dental office and noise. this stress can cause emotional distress and threaten dentists’ physical health and affect the quality of their life. this study is conducted to determine dentists’ professional quality...

smart home is composed of several controllers with different plants in control. if each controller works independently, without considering the mutual effect of the others in the control process, the whole system could definitely not converge to an optimum desired status and may not ever reach the demanded condition. the function of different controller system may has conflict in some condition...

In order to investigate light and temperature effects on germination of different ecotypes of wild mustard  (Sinapis arvensis L.), seeds were collected from four regions: Fars, West Azarbayjan, Khouzestan and Mazandaran Provinces. Seed size and weight, difference of dormancy state among the ecotypes, seed germination in differential light and temperature conditions were studied. The results sho...

We consider the interaction of quantum light with an ideal semiconductor microcavity. We investigate photon statistics in different conditions and the presence of detuning and exciton-exciton interaction. We show that in the resonant interaction and absence of the exciton-exciton interaction, the state of the whole system can be considered as   coherent state. According to our results, it turns...

the formation of marriage which is the foundation of family in both islam and zoroastrianism depends on certain requirements or conditions. the comparative study of these requirements or conditions shows certain similarities and differences between the two religions, and examining these issues can shed light on the common tradition and shared heritage between the two. the present essay will fir...