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Squelette

Publications associées (56)

mu-PIXE and SAXS studies at the bone-cartilage interface

Micro Proton Induced X-ray Emission (mu-PIXE) analysis has been employed herein in investigating and quantifying the distribution of a number of essential elements in thin human diseased articular cartilage sections affected by osteoarthritis (OA). Various ...

2010

Diameter of Polyhedra: Limits of Abstraction

Friedrich Eisenbrand, Thomas Rothvoss, Nicolai Hähnle

We investigate the diameter of a natural abstraction of the 1-skeleton of polyhedra. Even if this abstraction is more general than other abstractions previously studied in the literature, known upper bounds on the diameter of polyhedra continue to hold her ...

2010

Skeletal growth, ultrastructure and composition of the azooxanthellate scleractinian coral Balanophyllia regia

Anders Meibom, Jaroslaw Hubert Stolarski, Isabelle Domart-Coulon

The biomineralization process and skeletal growth dynamics of azooxanthellate corals are poorly known. Here, the growth rate of the shallow-water dendrophyllid scleractinian coral Balanophyllia regia was evaluated with calcein-labeling experiments that sho ...

2010

The scale axis picture show

Mark Pauly

We demonstrate how the scale axis transform can be used to compute a parameterized family of shape skeletons. The skeletons gradually represent only the most important features of a shape, in a scale-adaptive manner. Here a shape O is any bounded open subs ...

2009

Nanostructural and geochemical features of the Jurassic isocrinid columnal ossicles

Anders Meibom, Jaroslaw Hubert Stolarski

Calcite isocrinid ossicles from the Middle Jurassic (Bathonian) clays in Gnaszyn (central Poland) show perfectly preserved micro- and nanostructural details typical of diagenctically unaltered echinoderm skeleton. Stereom pores are filled with ferroan calc ...

2009

Strontium-86 labeling experiments show spatially heterogeneous skeletal formation in the scleractinian coral Porites porites

Anders Meibom, Jaroslaw Hubert Stolarski, Isabelle Domart-Coulon

This paper presents the results of an effort to label calcium carbonates formed by marine organisms with stable isotopes to obtain information about the biomineralization processes. The growing skeleton of the scleractinian coral Porites porites was labele ...

2009

Constructing Convex Planes In The Pants Complex

Hugo Parlier

Our main theorem identifies a class of totally geodesic subgraphs of the 1-skeleton of the pants complex, referred to as the pants graph, each isomorphic to the product of two Farey graphs. We deduce the existence of many convex planes in the pants graph o ...

2009

Diameter of Polyhedra: Limits of Abstraction

Friedrich Eisenbrand, Thomas Rothvoss, Nicolai Hähnle

We investigate the diameter of a natural abstraction of the 1-skeleton of polyhedra. Although this abstraction is simpler than other abstractions that were previously studied in the literature, the best upper bounds on the diameter of polyhedra continue to ...

2009

Effect of environmental conditions and skeletal ultrastructure on the Li isotopic composition of scleractinian corals

Anders Meibom

The lithium isotope compositions (Li-7/Li-6) and Li/Ca ratios of shallow-water and deep-sea corals (Porites lutea, Cladocora caespitosa, Lophelia pertusa and Desmophyllum cristagalli) were measured using a Cameca ims 1270 ion microprobe. The two C. caespit ...

2009

Compositional variations at ultra-structure length scales in coral skeleton

Anders Meibom, Karin Lederballe Meibom

Distributions of Mg and Sr in the skeletons of a deep-sea coral (Caryophyllia ambrosia) and a shallow-water, reef-building coral (Pavona clavus) have been obtained with a spatial resolution of 150 nm, using the NanoSIMS ion microprobe at the Museum Nationa ...

2008

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