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Main Phases of Wood Formation in Chestnut

by unknown authors
"... doi:10.5552/drind.2011.1124 ABSTRACT • We present wood formation in chestnut (Castanea sativa) during the growing seasons 2008 and 2009, compare its dynamics in the two years and discuss possible effects on wood quality. To this purpose, micro-cores containing wood, cambium and phloem were collected ..."
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113.8 ± 5.3) and the fi rst latewood vessels were observed around 5 June 2008 (DOY 156.5 ± 7.7). Latewood formation continued until 29 September 2008 (DOY 273.9 ± 10.5) when the terminal cells of the newly formed xylem ring were fully lignifi ed. In 2009, the main phases of wood formation generally

Brain magnetic resonance imaging with contrast dependent on blood oxygenation.

by S Ogawa , T M Lee , A R Kay , D W Tank - Proc. Natl. Acad. Sci. USA , 1990
"... ABSTRACT Paramagnetic deoxyhemoglobin in venous blood is a naturally occurring contrast agent for magnetic resonance imaging (MRI). By accentuating the effects of this agent through the use of gradient-echo techniques in high fields, we demonstrate in vivo images of brain microvasculature with imag ..."
Abstract - Cited by 648 (1 self) - Add to MetaCart
the vessel wall. This increase in the number of spins affected by deoxyhemoglobin is a form of amplification. When the susceptibility-induced local field differences exist within an imaging voxel, there is a resultant distribution of shifts in water resonance frequencies. In the gradient-echo method, a phase

The Retinoblastoma Protein and Cell-Cycle Control

by Robert A. Weinberg - Cell , 1995
"... pRB, the product of the retinoblastoma tumor suppressor gene, operates in the midst of the cell cycle clock appara-tus. Its main role is to act as a signal transducer connecting the cell cycle clock with the transcriptional machinery. In this role, pRB allows the clock to control the expression of b ..."
Abstract - Cited by 429 (5 self) - Add to MetaCart
pRB, the product of the retinoblastoma tumor suppressor gene, operates in the midst of the cell cycle clock appara-tus. Its main role is to act as a signal transducer connecting the cell cycle clock with the transcriptional machinery. In this role, pRB allows the clock to control the expression

Main phases of the solar cycle in the galactic cosmic ray intensity

by M B Krainev , 2004
"... [1] The separation of the solar cycle in the modulation of the galactic cosmic ray intensity into the four main phases (the minimum, ascending, maximum, and descending) is considered. We substantiate advantages of such classification, choose as its initial point one of the known classifications, an ..."
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[1] The separation of the solar cycle in the modulation of the galactic cosmic ray intensity into the four main phases (the minimum, ascending, maximum, and descending) is considered. We substantiate advantages of such classification, choose as its initial point one of the known classifications

Polar Geophysical Institute POLAR CURRENT SYSTEMS AT THE MAIN PHASE OF A

by Geomagnetic Storm
"... Abstract. By the method of Artificial Neural Networks (ANN) the connection of magnetic disturbances in auroral region and mid and low latitude magnetic disturbances at the main phase of a geomagnetic storm is investigated. The search of nonlinear correlations between indices of auroral electrojets i ..."
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Abstract. By the method of Artificial Neural Networks (ANN) the connection of magnetic disturbances in auroral region and mid and low latitude magnetic disturbances at the main phase of a geomagnetic storm is investigated. The search of nonlinear correlations between indices of auroral electrojets

The main phase of the Hercynian orogeny in the Pyrenees is a dextral transpression

by G. Gle Izes, D. Leblanc, J. L. Bouchez
"... Abstract: Synthesis of several recent structural studies in the Pyrenees points to a syntec-tonic emplacement of granitic plutons, more or less early during the D2 main phase of the Hercynian orogenesis. A dextral E-W component ofsimple shear is demonstrated forD2, which was previously considered as ..."
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Abstract: Synthesis of several recent structural studies in the Pyrenees points to a syntec-tonic emplacement of granitic plutons, more or less early during the D2 main phase of the Hercynian orogenesis. A dextral E-W component ofsimple shear is demonstrated forD2, which was previously considered

Abstract Understanding the Main Phases of Developing a Maturity Assessment Model

by Tonia De Bruin (phd C, Prof Michael Rosemann, Ronald Freeze (phd C, Prof Uday Kulkarni
"... This is the author’s version of a work that was submitted/accepted for publication in the following source: ..."
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This is the author’s version of a work that was submitted/accepted for publication in the following source:

Valence-electron structure and properties of main phases in Ti(C, N)-based cermets

by Yong Zheng , Min You , Weihao Xiong , Wenjun Liu , Shengxiang Wang , 2003
"... Abstract Based on the empirical electron theory (EET) of solids and molecules, the valence-electron structures (VESs) of the main phases in Ti(C, N)-based cermets were calculated, and the relationship between the VES and properties was determined. The results indicated that the hardness of the phas ..."
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Abstract Based on the empirical electron theory (EET) of solids and molecules, the valence-electron structures (VESs) of the main phases in Ti(C, N)-based cermets were calculated, and the relationship between the VES and properties was determined. The results indicated that the hardness

Distributed Localization in Wireless Sensor Networks: A Quantitative Comparison

by Koen Langendoen, Niels Reijers , 2003
"... This paper studies the problem of determining the node locations in ad-hoc sensor networks. We compare three distributed localization algorithms (Ad-hoc positioning, Robust positioning, and N-hop multilateration) on a single simulation platform. The algorithms share a common, three-phase structure: ..."
Abstract - Cited by 302 (7 self) - Add to MetaCart
: (1) determine node--anchor distances, (2) compute node positions, and (3) optionally refine the positions through an iterative procedure. We present a detailed analysis comparing the various alternatives for each phase, as well as a head-to-head comparison of the complete algorithms. The main

From kuramoto to crawford: exploring the onset of synchronization in populations of coupled oscillators

by Steven H. Strogatz - Phys. D , 2000
"... The Kuramoto model describes a large population of coupled limit-cycle oscillators whose natural frequencies are drawn from some prescribed distribution. If the coupling strength exceeds a certain threshold, the system exhibits a phase transition: some of the oscillators spontaneously synchronize, w ..."
Abstract - Cited by 302 (4 self) - Add to MetaCart
The Kuramoto model describes a large population of coupled limit-cycle oscillators whose natural frequencies are drawn from some prescribed distribution. If the coupling strength exceeds a certain threshold, the system exhibits a phase transition: some of the oscillators spontaneously synchronize
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