نتایج جستجو برای: canopy diameter small and large diameters

تعداد نتایج: 17015824  

An experimental study of the effect of silt and influence of cell confinement on the bearing capacity of circular footings on silty sand was carried out. Laboratory experiments on clean sand and sand containing silt up to 25 % were performed. Cells with different heights and diameters were used to confine the silty sand. The effect of proportion of silt in sand, cell diameter, cell height and t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...

2007
L. J. Spicer

Comparisons were made between diameters of 54 bovine follicles greater than 5.9 mm from 32 pairs of ovaries measured on the ovarian surface and diameters of the same follicles subsequently dissected from the ovaries. Seventy-eight percent of follicles measured on the ovarian surface were within 1.9 mm of the size measured after dissection. The remaining 22% of follicles measured on the surface ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم انسانی 1390

in solvo-hydrothermal method, xrd pattern was indicated presence of intermediate of ammonium octatmolybdate and ammonium tetramolybdate, which were changed to stble phase of ?-moo3 annealing. sem images were indicated nanoparticle with semispheical morphology and tem image was demonstrated nanoparticles with a diameter size of 25nm. also in impregnate method. the xrd pattern was shown high crys...

Journal: :Discrete Applied Mathematics 1992

Journal: :Discrete Applied Mathematics 1992
William M. Kantor

Kantor, W.M., Some large trivalent graphs having small diameters, Discrete Applied Mathematics 37/38 (1992) 353-357. If Iz 2 10, then there is a tnvalent Cayley graph for G =PSL (n. y) whose diameter is O(logla). This paper concerns an improvement of a result of Babai, Kantor and Lubotzky [ 11. In that paper it was shown that there is a constant C such that every non-Abelian finite simple group...

2006
A. Farid

Airborne lidar (light detecting and ranging) is a useful tool for probing the structure of forest canopies. Such information is not readily available from other remote sensing methods and is essential for modern forest inventories. In this study, small-footprint lidar data were used to estimate biophysical properties of young, mature, and old cottonwood trees in the San Pedro River basin near B...

2005
J. OGDEN

Information on diameter frequency distributions and spatial patterns, together with estimates of diameter growth and mortality, are used to draw up regeneration balance sheets for three stands of red beech (Nothofagus fusca) on Mount Colenso, New Zealand. Because large canopy gaps are a feature of these forests, attention is directed particularly to their future status. It is concluded that, in...

Journal: :مرتع و آبخیزداری 0
ملوک رویان فارغ التحصیل کارشناسی ارشد رشته مرتعداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران عادل سپهری دانشیار دانشکده مرتع و آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران عبدالرسول سلمان ماهینی دانشیار دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

remote sensing and aerial photographs are used to produce medium to small scale images. however, for detailed information especially to estimate rangeland vegetation canopy cover there is a need to larger scale images. it is therefore necessary to study the technical applicability of different devices such as short range light airplanes, kites, gliders and balloons. in this research, we focused...

ژورنال: علوم آب و خاک 2017
خالدی درویشان, عبدالواحد, روشان, سید حسین, سلیمانی, کریم, وهاب زاده, قربان,

Sand and gravel mining from the most of our country rivers causes morphological, hydrological and geomorphological changes in these rivers. This study investigates the effects of removal of sand and gravel from the river bed on sedimentological features of Zaremrood River in Mazandaran province. For this purpose, by determining four sections before and four sections after the sand removing poin...

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