introduction environment is a very great and complexity collection which has been created by a process and evolution of live existences and composer elements of ground area, and so affect the human activities and is affected from that. industrialization and modernization has let lots of heavy elements to entire into the atmosphere. elements of the atmosphere will locate on the surface of soil a...

introduction groundwater resources in arid-semiarid zones universally suffer from problems of over-abstraction and declining water tables. in addition to the issues related to quantity, degradation of groundwater quality now assumes major importance in the arid and semiarid regions. in such areas, natural factors such as the low precipitation, combined with high evapotranspiration, result in hi...

an experiment was carried out to estimate growth parameters of broiler chickens received artichoke extract in their drinking water using gompertz non-linear model and to compare gompertz non-linear regression equation and artificial neural network modeling in terms of their ability to predict body weight of broiler chicks at day 42 of age. a total number of 250 one- day- old ross 308 broiler ch...

architectural programming, as a realm in the design process, is considered to be one of the most valuable assets of the design research. through the use of architectural programming, a designer becomes familiar with different issues of the project and establishes his/her goals to produce an appropriate design solution. an ideal design solution requires a thorough understanding about the needs o...

seed rot caused by pythium ultimum is an important disease of safflower in iran and other countries. therefore, finding the genetic sources of resistance and releasing of resistant cultivar is considered as important objective by safflower breeders. this disease will spread when air humidity and the moisture in the soil are sufficiently prepared and this situation occurs exactly in the time of ...

regional analysis is one of the important methods for estimating the low flow in ungagged regions. investigation of the relations between effective factors of hydrological drought is the most important strategy to contrast and reduction of drought losses. in this study to analyze of low flow, the daily discharge data from 20 gauging stations with 25 years period (1988-2012) in the kashafroud ba...

introduction: adolescents are the important portions of the iranian population. adolescents health status has a critical role in their learning ability and their performance. the present study aimed to determine the predictive factors for general health status in iranian high school students in 2014. materials and methods: in a cross-sectional study evaluated the predictive factors for general ...

a field experiment was conducted in research farm of isfahan university of technology, isfahan, iran in 2011 . various weeding periods were investigated on growth and yield of potato under drip tape and furrow irrigation systems. a split plot arrangement was used in a randomized complete block design with three replications. irrigation treatments were included in main plots and periods of weed ...

two-year experiments was conducted to find the effect of value and times of supplementary irrigation on water requirement and yield production of three new wheat cultivar namely (‘w33g’, ‘cross alborz’ and ‘bahar’) in three replicate randomized complete block factorial experiments since 2009-11. experiments were performed at the campus of agriculture and natural resources of razi university lys...

a m i t r a z, a n i ns e c t i c i d e /a ca ri c i de of the f o r m a m i d i n e p e st i c i d e s group, is a ? 2 a d r e n e r g i c ag on i st a nd of t he a m i d i ne c h e m i ca l f a m il y generally us e d to c o n t r ol animal e c top a r a s i t e s. poisoning due to am i t r a z i s r a r e and characterized by c e nt r a l n e r v ous s y st e m a nd r e sp ir a to r y d e p ...