Results 211 to 220 of about 1,736,622 (245)
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Patterns of Variability in the Diameter of Lateral Roots in the Banana Root System
New Phytologist, 2005The relative importance of root system structure, plant carbon status and soil environment in the determination of lateral root diameter remains unclear, and was investigated in this study. Banana (Musa acuminata) plants were grown at various moderate levels of soil compaction in two distinct experiments, in a field experiment (FE) and in a glasshouse ...
Loïc Pagès, Harry Ozier-Lafontaine
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Influence of Root Diameter on the Penetration of Seminal Roots Into a Compacted Subsoil
Plant and Soil, 1992A field experiment was conducted to evaluate the influence of root diameter on the ability of roots of eight plant species to penetrate a compacted subsoil below a tilled layer. The soil was a fine sandy loam red-brown earth with a soil strength of about 3.0 MPa (at water content of 0.13 kg kg-1, corresponding to 0.81 plastic limit) at the base of a ...
A M Alston, A R Dexter
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Dependence of Root Cell Growth and Division on Root Diameter
Russian Journal of Developmental Biology, 2018Primary roots of 98 species from different families of monocotyledonous and dicotyledonous plants and adventitious roots obtained from bulbs and rhizomes of 24 monocot species were studied. Root growth rate, root diameter, length of the meristem and elongation zones, number of meristematic cells in a file of cortical cells, and length of fully ...
E. I. Bystrova +2 more
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Dynamic Normal Aortic Root Diameters: Implications for Aortic Root Reconstruction
The Annals of Thoracic Surgery, 2011The main aim of this study is to determine the normal diameter and the relationship of aortic root components in healthy adults, and to provide a morphologic foundation for future clinical applications.Echocardiography was performed in 314 normal subjects who were divided into five groups according to age.
Dan, Zhu, Qiang, Zhao
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Microscopic investigation of root canal diameters
The Journal of the American Dental Association, 1958Today, greater emphasis is placed on conserving teeth by means of endodontic treatm ent than was previously, and the need for research in this field has also increased. O ne of the phases of study tha t has been neglected until recently is the accurate determ ination of root canal size and taper.
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Precrop root system determines root diameter of subsequent crop
Biology and Fertility of Soils, 2015Little is known about the root distribution pattern of different root diameter classes as affected by crop sequence. Barley roots were sampled using the monolith method from 45 to 155 cm soil depth at the time of anthesis (BBCH = 61) after growing taprooted chicory and fibrous-rooted tall fescue precrops for two consecutive years.
Eusun Han, Timo Kautz, Ulrich Köpke
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Branchings in rooted graphs and the diameter of greedoids
Combinatorica, 1988Let G be a 2-connected rooted graph of rank r and A,B two (rooted) spanning trees of G. We show that the maximum number of exchanges of leaves that can be required to transform A into B is \(r^ 2-r+1(r>0)\). This answers a question by L. Lovász. There is a natural reformulation of this problem in the theory of greeoids, which asks for the maximum ...
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Anatomical Science International, 2011
The purpose was to determine the diameter of the main root canal and wall thickness in the apical dentin in mesial roots of maxillary and mandibular molars. Forty mesiobuccal and mesial root specimens were sectioned horizontally at 1, 2 and 3 mm from the apex, and measured at each top surface by using optical microscopy to an accuracy of ×20 ...
Josué, Martos +4 more
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The purpose was to determine the diameter of the main root canal and wall thickness in the apical dentin in mesial roots of maxillary and mandibular molars. Forty mesiobuccal and mesial root specimens were sectioned horizontally at 1, 2 and 3 mm from the apex, and measured at each top surface by using optical microscopy to an accuracy of ×20 ...
Josué, Martos +4 more
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Reconstruction of root systems in Cryptomeria japonica using root point coordinates and diameters
Planta, 2018We developed simple algorithms for reconstructing tree root system architecture using only the root point coordinate and diameter, which can be systematically obtained without digging up the root systems. Root system architecture (RSA) is strongly related to various root functions of the tree.
Mizue Ohashi +8 more
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The relation of nucleolus diameter to cell body diameter in mammalian dorsal root ganglion cells
The Anatomical Record, 1985AbstractThe present study correlates cell body and nucleolar sizes for dorsal root ganglion cells in the rat. To do this, we measured cell body areas and calculated their diameters and measured nucleolar diameters for 719 cells. These data indicate that there is a correlation in that increasing cell size is associated with increasing nucleolar size ...
R E, Coggeshall, K, Chung, D E, Bee
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