Salgohygia Brailovsky and Barrera new genus, and two new species (S. assecta Brailovsky and Barrera and S. gracilis Brailovsky and Barrera), collected in Dutch New Guinea, are described. The relationship with Sciophyrus ...

A detailed study and mapping of the Neogene volcanosedimentary rocks cropping at the Bahai San Nicolis, Baja California Sur, was carried out, allowing reconnaissance and formal description of the San Nicolas Formation (a ...

Different sources of information about biodiversity may lead to unrealistic or biased estimation of its components, with different patterns according to the scale of analysis. In this study, we analyse patterns of species ...

It is well known that under the first Born approximation, the differential cross-section dsigma/dOmega for light scattered by a fractal of dimension d(f) scales with wave vector Q as Q(-df). The use of this formula to ...

Turbulence is triggered by an air flow passing around a cylinder and heated by an array of hot wires parallel to the cylinder axis. Simultaneous velocity and passive temperature fluctuations are measured locally on the ...

Experimental results concerning the statistics of the streamwise component of velocity in a turbulent boundary layer near a solid wall are presented. Energy spectra, probability density functions and velocity structure ...

A scanning electron microscopy analysis was performed for 570 quartz grains from desert and coastal dune sands in NW Mexico. Our main goal is to present a new application in the use of ternary diagrams with logistic normal ...

The unbounded motion of a particle in a Coulomb field is analyzed from the point of view of velocity space using both the hodograph and the properties of the Hamilton vector. Many features of the motion even the classical ...