نتایج جستجو برای: root distribution pattern

تعداد نتایج: 1052268  

Journal: :The Plant journal : for cell and molecular biology 2007
Prisca Campanoni Jens Uwe Sutter Craig Stewart Davis George Robert Littlejohn Michael Robert Blatt

Progress in analysing the cellular functions of many structural proteins has accelerated through the use of confocal microscopy together with transient gene expression. Several methods for transient expression have been developed in the past few years, but their application has seen limited success beyond a few tractable species and tissues. We have developed a simple and efficient method to vi...

Although the random sum distribution has been well-studied in probability theory, inference for the mean of such distribution is very limited in the literature. In this paper, two approaches are proposed to obtain inference for the mean of the Poisson-Exponential distribution. Both proposed approaches require the log-likelihood function of the Poisson-Exponential distribution, but the exact for...

Journal: :JCP 2006
Mahalingam Ramkumar

A family of novel broadcast encryption schemes based on probabilistic key pre-distribution are proposed, that enable multiple sources to broadcast secrets, without the use of asymmetric cryptographic primitives. A comprehensive analysis of their efficiencies and performance bounds are presented. The paper also suggests a framework for applications of broadcast encryption, depending on 1) the re...

Journal: :Plant physiology 2003
María Del Carmen Córdoba-Pedregosa Francisco Córdoba José Manuel Villalba José Antonio González-Reyes

Onion (Allium cepa) roots growing hydroponically show differential zonal values for intra- (symplastic) and extra- (apoplastic) cellular ascorbate (ASC) and dehydroascorbate (DHA) contents and for related enzyme activities. In whole roots, ASC and DHA concentrations were higher in root apex and meristem and gradually decreased toward the root base. Guaiacol peroxidase, ASC peroxidase, monodehyd...

Journal: :iranian journal of science and technology (sciences) 2014
s. m. dehnavi

the square map is one of the functions used in cryptography. for instance, the square map is used in rabin encryption scheme, block cipher rc6 and stream cipher rabbit, in different forms. in this paper, we study statistical properties of the output of the square map as a vectorial boolean function. we obtain the joint probability distribution of arbitrary number of the upper and the lower bits...

2007
Ali Talati Reza Disfani Ashkan Afshar Akbar Fallah Rastegar

INTRODUCTION Traumatic injuries may affect the vitality and development of tooth. So divergence or parallelism of canal walls induces an open apex which is very susceptible to fracture. The aim of this study was to determine the stress distribution pattern in immature teeth and compare it with mature teeth. MATERIALS AND METHODS In order to analyze stress distribution using finite element met...

Journal: :JACC. Cardiovascular imaging 2013
Alessandro Della Corte Ciro Bancone Marianna Buonocore Giovanni Dialetto Franco E Covino Sabrina Manduca Giancarlo Scognamiglio Veronica D'Oria Marisa De Feo

OBJECTIVES This study sought to identify risk factors for rapid growth of the ascending aorta in patients with bicuspid aortic valve (BAV) disease, taking into account its phenotypic variability. BACKGROUND Phenotypic heterogeneity of BAV-related aortopathy has recently been widely recognized. However, few studies have addressed the determinants of aortic growth so far, not distinguishing amo...

Journal: :محیط زیست طبیعی 0
آرش کرمی کارشناس ارشد رشتۀ جنگلداری و اقتصادجنگل دانشکدۀ منابع طبیعی، دانشگاه تهرا جهانگیر فقهی دانشیار گروه جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی، دانشگاه تهران محمدرضا مروی مهاجر استادگروه جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی، دانشگاه تهران

without doubt is one important aspects of sustainable forest management the continuing forest regeneration. identify and determine is effective dispersal and distribution pattern of regeneration patches in various types of forest and its evolution, in maintaining biodiversity in natural ecosystems. purpose was chosen of gorazbon district kheyrod forest for study, all patches regeneration were l...

2016
Wenjian Xie Hongjie Zhang Jianguo Zeng Hubiao Chen Zhongzhen Zhao Zhitao Liang

BACKGROUND The dry root of Salvia miltiorrhiza Bunge (Danshen in Chinese) is an used-widely traditional Chinese herbal medicine with and promising efficacy. This herbal plant has been extensively cultivated in China. Currently, people usually rely on its morphological features to evalaute its pharmaceutical quality. In this study, laser micro-dissection system (LMD) was applied to isolate singl...

2016
Anna Barabasz Maria Klimecka Maria Kendziorek Aleksandra Weremczuk Anna Ruszczyńska Ewa Bulska Danuta Maria Antosiewicz

This study links changes in the tobacco endogenous metal-homeostasis network caused by transgene expression with engineering of novel features. It also provides insight into the concentration-dependent mutual interactions between Zn and Cd, leading to differences in the metal partitioning between wild-type and transgenic plants. In tobacco, expression of the export protein AtHMA4 modified Zn/Cd...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید