Results 1 to 10 of about 17,688 (199)

Design, and Fabrication of X-band Antenna for Sensing Satellite with the Use of Circular Probe and Radiation Pattern Directing Blades [PDF]

open access: yesعلوم، فناوری و کاربردهای فضایی, 2023
In this paper a waveguide antenna to create a saddle shaped pattern for remote sensing satellite applications has been introduced, and a method to excite a waveguide as feeding X-band antenna with the aim of achieving circular polarization has been ...
Hossein Eskandari   +2 more
doaj   +1 more source

Ethnobotany of wild plants in Bestam region of Selseleh county, Lorestan province [PDF]

open access: yesDānishhā-yi būmī-i Īrān, 2021
Human from the past to the present in many ways to survive and improve their quality of life are dependent on plants of different ways. Ethnobotany .The aim of this study is to comprehensively study the Ethnobotany of wild plants in Bestam region in ...
Ahmad Bazgir, Pourhashemi Mehdi
doaj   +1 more source

Attenuation relationships of Arias intensity for Iranian plateau using intelligent Gene Expression Programming [PDF]

open access: yesJournal of Structural and Construction Engineering, 2021
The earthquake is one of the natural hazards that have caused many casualties and financial losses throughout the world over the years. This has been the reason why the earthquake hazard analysis studies should be studied more seriously.
Ali Tavassolian   +2 more
doaj   +1 more source

Utilization of Turbo-Expander to Generate Power in Natural Gas Extraction Process [PDF]

open access: yesJournal of Petroleum Science and Technology, 2021
Natural gas is one of the most reliable and general energy sources globally, which their reservoirs always have high pressures. Nowadays, due to the production and supply of a variety of turbine expansions, it is possible to generate power from natural ...
Yasna Pourmohammad
doaj   +1 more source

Introducing tourist land attractions of Aghajari Formation in Genaveh, South Dezful Basin, Iran [PDF]

open access: yesSustainable Earth Trends, 2021
Iran is one of the five countries in the world with the highest climatic diversity, in the word, in which the existing tourist and natural attractions have a high potential for the development of non-oil revenues.
Mohsen Liaghat   +2 more
doaj   +1 more source

Detecting pollarded stands in Northern Zagros forests, using artificial neural network classifier on multi-temporal lansat-8(OLI) imageries (case study: Armarde, Baneh) [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2019
Local economy, based on animal husbandry in Northern Zagros forest leads to increase employing leaves and branches (pollarding) compared to the other parts of Zagros.
O Rashidi Tazhan   +2 more
doaj   +1 more source

The deep structure of the Zagros mountain system according to Taylor approximation seismic tomography data

open access: yesГеофизический журнал, 2023
The seismic tomographic model obtained by the Taylor approximation method provides new constraints on the Earth’s crust and mantle structure beneath the Zagros mountain system at depths of 50—850 km.
T.O. Tsvetkova   +3 more
doaj   +1 more source

Biogenic structures in test of large benthic foraminifers (Orbitolina): Example from Aptian-Albian sediments of SW Neo-Tethys Ocean, Zagros, SW Iran [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2018
Introduction Study of carbonate sediments of the Dariyan Formation (Aptian-Albian) in northwest of Shiraz releases different types of biogenic structures in forms of encrustation and drilling in hard substrates. Generally biogenic structures are referred
Seyed Mohammad Ali Moosavizadeh   +1 more
doaj   +1 more source

A Study of Flora, Life Form, and Chorology of Plant Species in Gamasiab Region of Nahavand, ‎Hamedan province [PDF]

open access: yesتاکسونومی و بیوسیستماتیک, 2022
The present study was carried out to provide a floristic list and determine the life forms and chorology of species in the Gamasiab region at a distance of 20 Km. south of Nahavand (Hamedan province).
Keivan SafiKhani
doaj   +1 more source

Viability Loss of Recalcitrant Brant’s Oak (Quercus brantii Lindl.) Acorns during Overwintering [PDF]

open access: yesJournal of Nuts, 2022
The lack of germination success and subsequent seedling recruitment of recalcitrant acorns of Brant’s oak (Quercus brantii) has been described as one of the main reasons for the cessation of sexual regeneration in Zagros forests.
Ali Soltani
doaj   +1 more source

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