New and published (U-Th)/He data on zircon, apatite, zircon fission track ages constrain the thermal overprint cooling history of eastern Aar Massif, Switzerland. The timing pattern is in agreement with independent kinematic age constraints from exposed shear zones. This suggests that mainly reflect exhumation long-term exhumation-dynamics were controlled by crustal-scale tectonic processes. Re...

L'aspergillose peut se présenter sous une forme pseudo-tumorale avec destruction des parois osseuses sinusiennes, prêtant à confusion avec des lésions tumorales. L'imagerie en particulier la TDM du massif facial joue un rôle indiscutable dans le diagnostic et le bilan d'extension des différentes formes des sinusites aspergillaires. Patiente âgé de 42 ans, aux antécédents de soins dentaires réce...

Cardiac myxomas are benign tumors composed of sparse stellate cells in an extensive mucoid stroma. The surface of these tumors is often friable and gelatinous. Their intracardiac location makes embolization a constant threat. We report a patient who had diffuse systemic embolization of a left atrial myxoma coincident with a low-velocity frontal motor vehicle crash.

Neovascularization is defined as formation of new vessels from vascular endothelial cells derived from existing blood vessels. These new immature vessels are friable. They have increased permeability, lack structural integrity, and can result in lipid deposition and corneal opacities. Ultrastructurally, corneal neovascularization is characterized by vessels encroaching through separated stromal...

the magnesite veins are located in the beni bousera massif (internal rif, morocco), especially in tafidest region about 103 km sw of the tetouan city. they are hosted by perridotite and serpentinite formations.  the aim of this study is to clarify the origin of this type of orre genesis. geochimical study of magnesite ore reveals that is a cryptocrystalline magnesite, formed by the co2-rich hyd...

Zygotic embryos excised from immature green fruits of the rattan palm, Calamus thwaitesii and cultured for 16 weeks under optimum culture conditions in Murashige and Skoog (MS) medium supplemented with 31.67 μM 2,4-dichlorophenoxyacetic acid (2,4-D) and 35.23 μM 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) produced mixed (compact and friable) calli at 70 and 92 % rates. The semi-friable part of ...

A description, and a possible structure and genetic mechanism for a “gypsum nest”, a very rare speleothem consisting of gypsum needles growing from a drying clay massif, are considered. Because of conservation concerns, theoretical modeling is the only acceptable method for studying this complicated and delicate feature. The model suggested considers the “nest” as a screw-dislocated spherocryst...

A new hypogean species of Trechus Clairville, Trechus arrecheai sp. nov., is described from the Iberian Peninsula. It was captured by subterranean pitfall traps in a non-calcareous Superficial Subterranean Habitat from the Moncayo Massif (Zaragoza, Spain). Data on the accompanying fauna are provided and the biogeographical implications of this discovery are discussed. A synthesis of the data ab...