نتایج جستجو برای: leafless period

تعداد نتایج: 490393  

Journal: :Computers and Electronics in Agriculture 2021

In recent decades, a considerable number of sensors have been developed to obtain 3D point clouds that great potential in optimizing management agriculture through the application precision techniques. order use data provided by these sensors, it is essential know their measurement error. this paper, methodology presented for obtaining cloud central axis training system defoliated fruit tree (M...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و علوم انسانی 1391

‘romanticism’ and ‘romantic’ are among the most controversial terms in literature. most readers, when encountering these words, would think of the well-known period of romanticism of the first three decades of the nineteenth century and the great six english poets known as ‘the big six’ of this period. however, romanticism does not belong to certain artists in a special period; one may seek ele...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده الهیات 1390

چکیده: یکی از دوره های مهم تاریخی ایران به لحاظ تأمین استقلال ملی مذهبی و حتی تأثیر آن بر فرهنگ و مذهب ایرانیان، دوره صفویه است. رسمیت دادن و رواج مذهب شیعه توسط شاه اسماعیل اول، یکی از مهمترین اقدامات این دولت محسوب می شود. بنابراین برای اجرای این سیاست، وی منصب صدارت را به عنوان منصبی مذهبی- حکو متی ایجاد کرد .این منصب از دوره ی تیموریان ایجاد شده بود ولی در اواخر این دوره اهمیت بیشتری یافت...

Journal: :Plant and Cell Physiology 2021

Abstract Photosynthesis with highly photoreactive chlorophyll (Chl) provides energy for plant growth but simultaneous risk of photooxidative damage and photoprotection costs. Although the leafless orchid Cymbidium macrorhizon mostly depends on mycorrhizal fungi carbon, it accumulates Chl particularly during fruiting may not be fully mycoheterotrophic. In fact, stable isotopic analysis suggested...

2016
Pramod Kumar Sairkar Anjana Sharma N. P. Shukla

Commercially important Commiphora species are drought-tolerant plants and they are leafless for most of the year. Therefore, it is necessary to develop some molecular marker for the identification. Intended for that, in the present study, species-specific, sequence-characterized amplified regions (SCAR) markers were developed for proficient and precise identification of closely related species ...

Journal: :Anais da Academia Brasileira de Ciencias 2005
André Jasper Fresia Ricardi-Branco Margot Guerra-Sommer

A new taxon of conifers (Coricladus quiteriensis) is described based on megafloristic remains from the roofshale level at the Quiteria Outcrop (Rio Bonito Formation-Lower Permian-Southern Parana Basin-Rio Grande do Sul-Brazil). This megafloristic community is included in the Botrychiopsis Zone--Botrychiopsis valida Sub-Zone (Kungurian/Roadian). The assemblage, preserved as impressions, do not p...

Journal: :E3S web of conferences 2023

The paper studies the morphology of winter shoots rare species Exochorda serratifolia S. Moore (Rosaceae Juss.) included in Red Book Primorsky Krai (Russian Federation) natural population (Khankaisky district Krai) and culture (the arboretum Mountain Taiga Station Far Eastern Branch Russian Academy Sciences) during 2020-2021. studied morphological features (linear dimensions stem, buds leaf sca...

2002
Janet Franklin Frank W. Davis Paul Lefebvre

T h e effect of variable tree canopy cover, shadows, and topography on Thematic Mapper (TM) data was examined for blue oak (Quercus douglasii) woodland and wooded grassland on rugged terrain in central California. Thematic Mapper data were analyzed from September 1986 (trees in leaf, grass understory senescent) and December 1984 (trees leafless, grasses emerging. Tree cover measured in 84 60 m ...

Journal: :Forests 2022

The tree sway frequency is an important part of the dynamic properties trees. In order to obtain trees in wind, a method tracking and measuring leafless deciduous by adaptive window based on MOSSE was proposed. Firstly, constructed for observed target. Secondly, Minimum Output Sum Of Squared Error Filter (MOSSE) used track sway. Thirdly, Fast Fourier transform analyze horizontal velocity target...

1999
W. Mayr H. Mayer U. Bacher H. Ebner

We present two approaches for the automatic extraction of trees from high resolution aerial imagery. In the first approach we aim at isolated trees in rural areas. This approach is based on automatically generated digital surface models (DSM). It models trees as generalized ellipsoids of revolution which are fitted to the DSM. The parameters of the generated generalized ellipsoids of revolution...

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