fish is one of the healthy foods and a rich source of animal protein average household consumption of fish in our soceity is such a low in that one can rarly find it in a family food basket. therefore, this study aimed at analyzing the factors affecting consumption of fish among tabrizian households. to do this, a total of 224 questionnaires was conducted using clustered two- stage sampling met...

Salinity is an influential abiotic environmental factor in aquatic species, specifically freshwater, where salinization causes ecosystem degradation. Secondary salinization, that increases salinity due to anthropogenic activities, can affect both osmoregulation and behaviour freshwater fishes. It generally believed invasive species handle climatic change degradation better than native which one...

the main objective of the present survey is to conduct a comparative analysis of the challenges of the performance evaluation system in two private and public sectors and their impact on effectiveness of human resources management practices. this survey was conducted using the field-descriptive method. the historical study method was used to collect theoretical subjects and the field study meth...

We present polarization observations of the radio emitting magnetar AXPJ1810−197. Using simultaneous multi-frequency observations performed at 1.4, 4.9 and 8.4 GHz, we obtained polarization information for single pulses and the average pulse profile at several epochs. We find that in several respects this magnetar source shows similarities to the emission properties of normal radio pulsars whil...