in order to study dry matter accumulation in different developmental stages and photoassimilates remobilization in bread wheat genotypes, a field experiment was carried out using a split split plot design based on a randomized complete block design with three replications in torogh agricultural and natural resources research station (mashhad, iran) in 2006-2007 and 2007-2008. main plots were as...

background and purpose: one of the most prominent concerns for the water consumers is pathogenic microorganism contamination. wells and underground water resources are the main resources of drinking water in sari city, iran. the main objectives of the research project were to explore the distribution and frequency of mycoflora in wells and underground water resources of the city and their conta...

bamdezh wetland with the geographical coordinates of   north longitude, east latitude and an area of 44 square kilometers, is located in about 40 km northwest of ahvaz and shavur river is the main source of its supply. this wetland is not only a habitat and suitable food source for aquatic and migratory birds, but as well a significant resource of income for the locals. today, with the arrival ...

This paper reports a plenary thermodynamic model of a novel solar system for water heating in buildings. Energy and exergy analyses are used to characterize the exergy destruction rate in any component and calculate system overall efficiency. The system consists of a solar evaporator, a heat exchanger to produce hot water, and an auxiliary pump. A computer simulation program using EES software ...

Arctic Terns Sterna paradisaea have the longest known migration of any bird species, from the Arctic to the Antarctic, covering up to 80 000 km during a round trip (Egevang et al. 2010). We report here on an apparent trans-Andean passage by southward migrating Arctic Terns on a route that takes them from the rich inshore upwellings of southwestern South America, over the Andes, to the highly pr...