نتایج جستجو برای: spectral studies

تعداد نتایج: 1576669  

عباسی, مژگان, پورقاسمی, نرگس ,

Leaf area index (LAI) is a key variable in primary production and carbon cycling in ecosystems. It is used as an important predictor to explain the processes of forest ecology, forest management, and remote sensing studies. Most of the remote sensing instruments such as LAI-2000 and Fisheye photography are based on three-dimensional space and they consider the geometry of the crown to estimate ...

M.R Bahrami S Hatami,

In the present study, a spectral finite element method is developed for free and forced transverse vibration of Levy-type moderately thick rectangular orthotropic plates based on first-order shear deformation theory. Levy solution assumption was used to convert the two-dimensional problem into a one-dimensional problem. In the first step, the governing out-of-plane differential equations are tr...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2004
ram k. agarwal surendra prasad indranil chakraborti

lanthanide(iii) chloro complexes of 4[n-(4’-hydroxy-3’-methoxybenzalidene) amino] antipyrine semicarbazone (hmbaaps) (i) and 4[n-(3’,4’,5’-trimethoxybenzalidene) amino] antipyrine semicarbazone (tmbaaps) (ii) with the general composition lncl3.2l (ln = la, pr, nd, sm, gd, tb, dy or ho; l = hmbaaps or tmbaaps) are reported. all the complexes were synthesized in ethanolic medium and refluxed the ...

Journal: :Communications, Faculty Of Science, University of Ankara Series B Chemistry and Chemical Engineering 1984

Journal: :Journal of Physics: Conference Series 2020

Journal: :Proceedings of the International Astronomical Union 2006

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