نتایج جستجو برای: zayandeh

تعداد نتایج: 80  

Journal: :جغرافیا و مخاطرات محیطی 0
عبدالرضا رحمانی فضلی سعید صالحیان بادی

1. introduction the meaning of sustainability is an effort to reach the best results in human and environmental programs which are considered to be for present and future. zayandeh-rud is the most important and vital river in esfahan area which is used in agriculture, industry, providing drinking water and all other economic sectors. this river is originated from the zagros mountains – zardkooh...

Journal: :journal of arthropod-borne diseases 0
mansoreh shayeghi department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. hassan vatandoost department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. abdollah gorouhi department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. ali reza sanei-dehkordi department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. yaser salim-abadi department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. mohsen karami department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran.

b a ckground: aquatic insects are the  major groups of arthropods that spend  some parts of their life cycle in the water. these insects play an important role for transmission of some human and animal diseases. there is few information about the aquatic insects fauna of iran. m e t hods: to study the aquatic insects fauna, adult, nymphal and larval collections were carried out from different h...

Journal: رستنیها 2008
M. SHAMS S. AFSHARZADEH,

Diatoms samples in Zayandeh Rood Dam Lake were taken in four stations from surface, 0.5 and 3 m depths of water in three replicate by Nansen sampler. Additional samples were taken from the surface with plankton net. Diatoms samples fixed with 4% formaldehyde and were concentrated and identified using microscope at 400 x. Salinity, NO3, PO4 and SO4 were measured using standard methods (APHA). In...

Journal: :Limnologica - Ecology and Management of Inland Waters 2010

2013
A. Mostajeran

One of the main problems of rice cultivation and production is the lack of water resources, especially during periods of low rainfall which affect the vegetative growth rate and the amount of yield. In this study the effect of low water supply on the number of heading per hill, number of grain per hill, dry weight of vegetative tissues and panicle and 1000 grain weight in three new cultivars of...

B. Jalali, M. Barzegar, M. Masoumian, M. Mehdipoor, S. Asadollah,

In a parasitic survey of the native and introduced fishes in the Zayandehrud River, 5 Myxobolus spp. were found in the gills, fins and skin of examined fish specimens. They include M. varicorhini from fin and M. samgoricus from skin of Capoeta damascina, M. musajevi from gills of Capoeta capoeta gracilis, Myxobolus cristatus from Capoeta aculeata, and M. saidovi from Alburnus sp. Data on the lo...

Introduction Zayandeh-Rud basin in central Iran is a region with water problems. Zayandehrood River that originates from the Zardkuh Bakhtiary Mountain is the most important river of the region for the development of agriculture, and a supply for heavy industry and drinking water sectors and is very important in all of economic activities. In the last decade, the water resources of the basin h...

Journal: :Resources environment and information engineering 2021

Nowadays, one of the most significant problems is that to recognize how severity heavy precipitation and floods may alter in future time comparison with current period. The purpose this research understand impact climate change on storm water probability maximum flood for Zayandeh rud river basin Iran selected as a case study. Forecast climatic parameters based temperature upcoming period (2006...

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