Results 31 to 40 of about 1,634,208 (299)

Recognizing Patterns: Spatial Analysis of Observed Microbial Colonization on Root Surfaces

open access: yesFrontiers in Environmental Science, 2018
Root surfaces are major sites of interactions between plants and associated microorganisms. Here, plants and microbes communicate via signaling molecules, compete for nutrients, and release substrates that may have beneficial or harmful effects on each ...
Hannes Schmidt   +6 more
doaj   +1 more source

Modelling diverse root density dynamics and deep nitrogen uptake — a simple approach [PDF]

open access: yes, 2009
We present a 2-D model for simulation of root density and plant nitrogen (N) uptake for crops grown in agricultural systems, based on a modification of the root density equation originally proposed by Gerwitz and Page in J Appl Ecol 11:773–781, (1974). A
A Bloom   +39 more
core   +1 more source

Studies of dental root surface caries 2: The role of cementum in root surface caries [PDF]

open access: yesAustralian Dental Journal, 2000
AbstractArtificial caries lesions were produced in roots of teeth using an acetate buffer system, when the layer of cementum was either normal in thickness, excessively thickened by hypercementosis, of had been removed completely. The rates of lesion progression were measured in each case using polarized light microscopy to measure lesion depth ...
McIntyre, J., Featherstone, J., Fu, J.
openaire   +3 more sources

Optical anisotropy induced by ion bombardment of Ag(001) [PDF]

open access: yes, 2007
Grazing incidence ion bombardment results in the formation of nanoripples that induce an anisotropic optical reflection The evolution of the reflectance anisotropy has been monitored in situ with reflectance anisotropy spectroscopy.
Everts, Frank   +2 more
core   +6 more sources

Root system characteristics of Marandu palisadegrass supplied with nitrogen and magnesium rates

open access: yesRevista Brasileira de Zootecnia, 2011
The development of root system of forage grasses is influenced by the supply of mineral nutrients. The experiment was carried out in a greenhouse in Piracicaba, São Paulo State, with the objective of evaluating the effect of nitrogen and magnesium rates ...
Tiago Barreto Garcez   +3 more
doaj   +1 more source

Confined structures of least bending energy [PDF]

open access: yes, 2013
In this paper we study a constrained minimization problem for the Willmore functional. For prescribed surface area we consider smooth embeddings of the sphere into the unit ball.
Müller, Stefan, Röger, Matthias
core   +3 more sources

Temperature variation on root surface with three root-end cavity preparation techniques [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2013
Introduction. Thermal changes can occur on the external root surface when root-end cavity preparation is performed, which may damage periodontal ligament cells and alveolar bone. Objective.
Bodrumlu Emre   +3 more
doaj   +1 more source

Vortex-line condensation in three dimensions: A physical mechanism for bosonic topological insulators

open access: yes, 2015
Bosonic topological insulators (BTI) in three dimensions are symmetry-protected topological phases (SPT) protected by time-reversal and boson number conservation {symmetries}.
Gu, Zheng-Cheng, Ye, Peng
core   +2 more sources

A novel weight function for RMS stress intensity factor determination in surface cracks [PDF]

open access: yes, 2010
This paper discusses the problem of stress intensity factor determination in surface cracks. In particular, the concept of root mean square stress intensity factors (RMS SIF) is discussed for the general class of semi-elliptical surface cracks.
Brennan, Feargal P.   +1 more
core   +1 more source

6-Hydroxy-5-nitrobenzo[d]oxazol-2(3H)-one—A degradable derivative of natural 6-Hydroxybenzoxazolin-2(3H)-one produced by Pantoea ananatis

open access: yesCommunicative & Integrative Biology, 2017
Pantoea ananatis is a bacterium associated with other microorganisms on Abutilon theophrasti Medik. roots. It converts 6-hydroxybenzoxazolin-2(3H)-one (BOA-6-OH), a hydroxylated derivative of the allelochemical benzoxazolin-2(3H)-one, into 6-hydroxy-5 ...
Margot Schulz   +7 more
doaj   +1 more source

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