Results 11 to 20 of about 49,570 (218)

Describing amoebas

open access: yesPacific Journal of Mathematics, 2022
An amoeba is the image of a subvariety of an algebraic torus under the logarithmic moment map. We consider some qualitative aspects of amoebas, establishing some results and posing problems for further study. These problems include determining the dimension of an amoeba, describing an amoeba as a semi-algebraic set, and identifying varieties whose ...
Nisse, Mounir, Sottile, Frank
openaire   +2 more sources

The ‘Amoeboid Predator-Fungal Animal Virulence’ Hypothesis

open access: yesJournal of Fungi, 2019
The observation that some aspects of amoeba-fungal interactions resemble animal phagocytic cell-fungal interactions, together with the finding that amoeba passage can enhance the virulence of some pathogenic fungi, has stimulated interest in the amoeba ...
Arturo Casadevall   +3 more
doaj   +1 more source

Analysis of Amoeba Active Contours [PDF]

open access: yes, 2014
Subject of this paper is the theoretical analysis of structure-adaptive median filter algorithms that approximate curvature-based PDEs for image filtering and segmentation. These so-called morphological amoeba filters are based on a concept introduced by
Welk, Martin
core   +1 more source

Development of a Machine Learning-Based Cysticidal Assay and Identification of an Amebicidal and Cysticidal Marine Microbial Metabolite against Acanthamoeba

open access: yesMicrobiology Spectrum, 2022
Traditional cysticidal assays for Acanthamoeba species revolve around treating cysts with compounds and manually observing the culture for evidence of excystation. This method is time-consuming, labor-intensive, and low throughput. We adapted and trained
Brian Shing   +3 more
doaj   +1 more source

Amoeba-Resisting Bacteria and Ventilator-Associated Pneumonia

open access: yesEmerging Infectious Diseases, 2003
To evaluate the role of amoeba-associated bacteria as agents of ventilator-associated pneumonia (VAP), we tested the water from an intensive care unit (ICU) every week for 6 months for such bacteria isolates; serum samples and bronchoalveolar lavage ...
Bernard La Scola   +5 more
doaj   +1 more source

Analytic varieties with finite volume amoebas are algebraic [PDF]

open access: yes, 2011
In this paper, we study the amoeba volume of a given $k-$dimensional generic analytic variety $V$ of the complex algebraic torus $(\C^*)^n$. When $n\geq 2k$, we show that $V$ is algebraic if and only if the volume of its amoeba is finite. In this precise
Madani, Farid, Nisse, Mounir
core   +3 more sources

SPATIAL-VARIANT MORPHOLOGICAL FILTERS WITH NONLOCAL-PATCH-DISTANCE-BASED AMOEBA KERNEL FOR IMAGE DENOISING

open access: yesImage Analysis and Stereology, 2015
Filters of the Spatial-Variant amoeba morphology can preserve edges better, but with too much noise being left. For better denoising, this paper presents a new method to generate structuring elements for Spatially-Variant amoeba morphology.
Shuo Yang, Jian-Xun Li
doaj   +1 more source

AMOEBAS AND INSTANTONS

open access: yesInternational Journal of Modern Physics A, 2007
We study a statistical model of random plane partitions. The statistical model has interpretations as five-dimensional [Formula: see text] supersymmetric SU (N) Yang–Mills on ℝ4× S1and as Kähler gravity on local SU (N) geometry. At the thermodynamic limit a typical plane partition called the limit shape dominates in the statistical model.
Maeda, Takashi, Nakatsu, Toshio
openaire   +3 more sources

Neurofibromin controls macropinocytosis and phagocytosis in Dictyostelium

open access: yeseLife, 2015
Cells use phagocytosis and macropinocytosis to internalise bulk material, which in phagotrophic organisms supplies the nutrients necessary for growth. Wildtype Dictyostelium amoebae feed on bacteria, but for decades laboratory work has relied on axenic ...
Gareth Bloomfield   +5 more
doaj   +1 more source

Testate amoebae as a proxy for reconstructing Holocene water table dynamics in southern Patagonian peat bogs [PDF]

open access: yes, 2014
Funded by Natural Environment Research Council. Grant Numbers: NE/I022809/1, NE/I022981/1, NE/I022833/1, NE/I023104/1 Ricardo Muza and the Wildlife Conservation Society Karukinka Park Acknowledgements This work was supported by the Natural Environment ...
Aaby   +69 more
core   +1 more source

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