نتایج جستجو برای: energy rate method

تعداد نتایج: 2975014  

Journal: :journal of nanostructures 2014
o. rahmani m. h. noroozi moghaddam

piezoelectric nanobeams having circular, rectangular and hexagonal cross-sections are synthesized and used in various nano structures; however, piezoelectric nanobeams with hexagonal cross-sections have not been studied in detail. in particular, the physical mechanisms of the surface effect and the role of surface stress, surface elasticity and surface piezoelectricity have not been discussed t...

Journal: :international journal of advanced biological and biomedical research 2014
ali gorjizade ali mohammad akhondali heidar zarei hesam seyyed kaboli

establishing satisfactory estimation methods of lake evaporation has been crucial vital for research and management of water resources and ecosystems. determining the accurate method to estimate evaporation from reservoirs in the investigation and management of water resources is very important. hence, in this study eight empirical methods such as; makkink, debruin-kejiman, penman, priestley-ta...

The real exchange rate indicates the ratio of the price of tradable goods to the price of non-tradable goods and is one of the key indicators in the Iranian economy that has undergone significant leaps in recent years. In the present study, the effects of real exchange rate shocks on energy intensity (as one of the important economic-environmental indicators) of Iran's economy is investigated w...

The real exchange rate indicates the ratio of the price of tradable goods to the price of non-tradable goods and is one of the key indicators in the Iranian economy that has undergone significant leaps in recent years. In the present study, the effects of real exchange rate shocks on energy intensity (as one of the important economic-environmental indicators) of Iran's economy is investigated w...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
mostafa alizadeh esmail ghahramani mansur zarrabi sara hashemi

in this study, removal of methylene blue by electro-coagulation method using aluminum and iron electrodes was investigated. the influence of the operating parameters such as contact time, current density, anode type, inter-electrodes distance, initial and final ph and energy consumption rate was determined. dye removal was increased with increases in solution ph, current density and contact tim...

Journal: :journal of agricultural science and technology 2013
h. darvishi m. h. khoshtaghaza g. najafi f. nargesi

in this study, green pepper was dried by a laboratory scale microwave-convective dryer. the effects of microwave power on drying rate, effective moisture diffusivity, and energy consumption of green pepper were studied at four different microwave powers of 180, 360, 540, and 720w. the drying data were fitted to the four thin-layer drying models. the moisture reduction of the green pepper sample...

Journal: :journal of agricultural science and technology 2014
h. darvishi m. h. khoshtaghaza s. minaee

the present study investigated the influence of air temperature and velocity on the drying kinetics and specific energy consumption during fluidized bed drying of soybean at 80, 100, 120 and 140ºc and airflow rates of 1.8, 3.1 and 4.5 m s-1. six mathematical models for describing the fluidized bed drying behavior were investigated. the value of the drying rate coefficient (k) increased with inc...

Journal: :iranian journal of science and technology (sciences) 2006
j. biazar

a 2-d heat conduction model has been solved by using the adomian decomposition method topredict the transient temperature and heat flux distribution in a thick solid that is irradiated by a laser source.the laser source may operate in a continuous wave (cw) mode or repeated pulse (rp) mode and may havearbitrary, spatial and temporal profiles.a generalized solution containing five-terms approxim...

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