Arid Land Research and Management Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713926000 Soils and Brine Geochemistry and Mineralogy of Hyperarid Desert Playa, Ouargla Basin, Algerian Sahara Belhadj Hamdi-Aissa a; Vincent Valles b; Alain Aventurier c; Olivier Ribolzi d a Université de Ouargla, L. R. de Prot...

This lecture is devoted to the problem of computing initial data for the Cauchy problem of 3+1 general relativity. The main task is to solve the constraint equations. The conformal technique, introduced by Lichnerowicz and enhanced by York, is presented. Two standard methods, the conformal transversetraceless one and the conformal thin sandwich, are discussed and illustrated by some simple exam...

We examine the effectiveness of hydrogen passivation as a function of defect type and microstructure at grain boundaries (GBs) in multicrystalline silicon. We analyze a solar cell with alternating mm-wide bare and SiN.,-coated stripes us ing laser-beam-i nduced current, electron backscatter diffraction, X-ray fluorescence microscopy, and defect etching to correlate preand post-hydrogenation rec...

Chromosome abnormalities are found in the vast majority of hematologic malignancies. A great number of these changes are very specific, and some unambiguously identify the nature and type of the malignant disorder in which they are found. The purposes of this paper are ( a) to update the list of characteristic chromosome changes occurring in human hematologic neoplasia; (b) to bring together da...

The orientation stimuli of adult individuals of the beetle Phalerisida maculata Kulzer (Coleoptera, Tenebrionidae) over the beach surface, were studied at two sandy beaches of the chilean coast approximately 1300 km apart, Apolillado (ca. 29 degrees S) and Playa Universitaria de Mehuín (ca. 39 degrees S). Phalerisida maculata did not orient by astronomic cues such as the sun and moon, nor by th...

In this paper, we describe the analysis of the TerraSAR-X high-resolution spotlight mode radar data in comparison with in situ measurements, optical imagery and ALOS PALSAR L-band radar data, for the purpose of investigating surface and subsurface features associated with ancient stones at Nabta Playa, Egypt. Many of the structures observable in the field and from high-resolution satellite opti...

Thin films of NiO were fabricated in air by surface-oxidation epitaxy (SOE) on biaxially-textured Ni substrate, for use as buffer layers for YBCO coated conductors. The surface-oxidation conditions such as the temperature and the reaction time, as well as the cooling rate, playa determining role in the process of epitaxial growth of the NiO layer. A continuous, biaxially-aligned textured NiO la...