نتایج جستجو برای: distance of drainage

تعداد نتایج: 21181934  

Journal: :تحقیقات جغرافیایی 0
محمد علی زنگنه اسدی حکیم سبزواری فریبا همتی حکیم سبزواری شهرام بهرامی حکیم سبزواری

the study area, paykola anticline, is located in the southwestern part of kermanshah province. the aim of this research is to evaluate the geomorphological indexes of active tectonics in paykola anticline as well as to study the effect of tectonic in the form and direction of geomorphological landforms. to achieve the aim of study, the lithological and tectonic characteristics of study area wer...

نادری خوراسگانی, مهدی , کریمی, احمد ,

  This research was carried out to study the impacts of geomorphologic characteristics of claypan on land use and land degradation. Databank of the study area was constructed and digital terrain model of claypan was prepared. By using GIS techniques spatial distributions of the subsurface drainage network, sediment transportation index and wetness index were calculated. The results indicate tha...

Introduction: Post cardiac surgery hemorrhagic syndromes, potentialized by implementing cardiopulmonary bypass, leads to increased hazards of blood products transfusion and pertains serious impacts on immediate patients outcome. The objective of this clinical trial was to investigate the efficiency of exogenous fibrinogen to control hemorrhagic syndromes following cardiac surgery in the intensi...

Journal: :Energy Science & Engineering 2023

Gas drainage is an important measure to ensure energy safety in coal mines. However, for mines with high gas content and low permeability, the critical question how enhance effect of drilling. By using self-unloading pressure on body front mine, permeability can be improved, which facilitates drainage. Therefore, establishing fluid–solid model gas-bearing mass under influence mining, this paper...

Heydar Zarei Keyvan Bolhasani,

Reference Evapotranspiration (ET0) is a basic parameter for determination of irrigation program. It is one of the most important factors in water resources management and considers as a requirement for every irrigation and drainage plans. Because of the spatial variations of ET0, it is necessary to use from intrapolation methods in order to estimation of this parameter in regional studie. Using...

Ali Almasi, Ali Jamshidi Rasool Momenzadeh Razieh Yazdizadeh Rouhollah Shokri, Shima Rezaei,

Nitrate has been the most common chemical contaminant in water resource. This ion is introduced into the water via different ways, but more items of nitrate pollution was connected with farming-based drainage and sewage effluent. In this descriptive-analytical study, groundwater nitrate and nitrite concentrations of 8 wells on Dehloran, Ilam, Iran, were analyzed in 2015 to determine the causes ...

Journal: :نشریه علمی - پژوهشی هیدرولوژی کاربردی 0
hematollah roradeh university of mazandaran, babolsar

there are human and animal health concerns related to drainage systems because nutrients, especially nitrogen and phosphorus, can contaminate water supplies. a field study was conducted on consolidated paddy fields of sari agricultural sciences and natural resources university, northern iran (36.3°n, 53.04°e), to determine the effect of subsurface drain depth and spacing on nitrogen (n) and pho...

Journal: :iranian journal of mathematical chemistry 2011
a. graovac o. ori m. faghani a. r. ashrafi

fullerenes are closed−cage carbon molecules formed by 12 pentagonal and n/2 – 10hexagonal faces, where n is the number of carbon atoms. patrick fowler in his lecture inmcc 2009 asked about the wiener index of fullerenes in general. in this paper werespond partially to this question for an infinite class of fullerenes with exactly 10ncarbon atoms. our method is general and can be applied to full...

Journal: :The British journal of ophthalmology 1950
T G WYNNE PARRY

FOR as lonig as operative interferenice is necessary in glaucoma, so I suppose w,ill ophthcaliic surgeons try to devise newx ways of reducinig intra-ocular tension by drainage. Recently the reading of an article (Bick, 1949) oni the use of tantalum metal in drainage of the eve, lhas tenmpted imie to submit thils brief account of some efforts on my own part over the last fewx years to achieve su...

Journal: :تحقیقات آب و خاک ایران 0
فرهاد اصلانی امیرحسین ناظمی سید علی اشرف صدرالدینی احمد فاخری فرد محمدعلی قربانی

the dominant traditional view to designing drainage systems explains drainage goals only in terms of crop yield increase and rhizosphere improvement while ignoring the environmental impacts of drainage projects. nowadays, this view has been changed into a new one in which both environmental and agricultural purposes are taken into consideration. depth and spacing of subsoil drains are important...

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