نتایج جستجو برای: amygdalus lycioides charmahal o bakhtiyaridomestic resource costcomparative advantagezagros

تعداد نتایج: 761711  

Journal: :Functional Ecology 2023

Survival and growth of woody species in the Mediterranean are mainly restricted by water availability. We tested hypothesis that acclimate their xylem vulnerability osmotic potential along a precipitation gradient. studied five predominant co-occurring species; Quercus calliprinos, Pistacia palaestina, lentiscus, Rhamnus lycioides Phillyrea latifolia, over two summers at three sites. The driest...

2011
Kassius Prestes Rodrigo Wilkens Leonardo Zilio Aline Villavicencio

This paper aims at presenting a methodology for semi-automatic validation of an wide-coverage ontology based on an existing electronic resource, PAPEL. From the existing relations, we choose those of synonymy and hypernymy to generate the ontology. The resulting output was converted to OWL format e manually validated by a lexicographer. As result, we have a wide-coverage ontological resource th...

2015
Alexander James Herbert Hoover

Existing development literature has argued that natural-resource endowments curse economic prosperity by reducing expenditures on education. According to this theory, public and private agents lack su cient foresight to make optimal economic decisions and become poor as a result. Using a panel of U.S. state-level data, this paper o ers evidence to the contrary. Public spending on education in r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم پایه 1391

در این پژوهش، تعدادی ترکیب فسفر-کلر با فرمول های xc(o)nhp(o)cl2 x]=cf3، ccl3، cf2cl و[ch2cl ، 4-ch3-c6h4nhp(o)cl2 ، 4-ch3-c6h4s(o)2nhp(o)cl2 و [4-ch3-c6h4nh]2p(o)cl تهیه و برای سنتز فسفر آمیدهای با فرمول ccl3c(o)nhp(o)y ] [nh(ch2)3nh=y (1) و [nhch2c(ch3)2ch2nh=y] (2)، [h2n(ch2ch3)2][4-ch3-c6h4s(o)2nhp(o)n(ch2ch3)2].h2o (3)، 4-ch3-c6h4nhp(o)[n(ch3)(ch2c6h5)]2 (4)، [4-ch3-c6h4nh]2p(o)op(o)[nhc6h4...

2003
Shengmin Sang Guolin Li Shiying Tian Karen Lapsley Ruth E. Stark Ravindra K. Pandey Robert T. Rosen Chi-Tang Ho

A new unusual kauranoid diterpene glycoside, named amygdaloside, was isolated from the nuts of almond (Prunus amygdalus). It’s structure was established as 17-O-D-glucopyranoside ent-6,7-epoxy-6-hydroxyl-6,7-secokaur-19-oic acid, 6,19lactone 16 17-diol on the basis of high-resolution 1D and 2D NMR spectral studies. © 2003 Elsevier Science Ltd. All rights reserved. Nutraceuticals are naturally-d...

Study of vegetation and environmental factors is considered as one of the important aspects in the management and conservation of natural ecosystems. This research investigates the effect of altitude from sea level (ASL) (in four classes: less than 1600 m, 1600-1800, 2000-1800 and more than 2000 m) and the direction of slope (in four main directions: north, south, east and west) on vegetative a...

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