In this study, we carried out photometric, spectroscopic, and for the first time, polarimetric observations of Amor-type near-Earth asteroid (2059) Baboquivari. Our findings represent reliable determination Baboquivari's physical properties. We used data from a 1m-class telescope (T100) along with ALCDEF photometric analyses 1.5-m-class (RTT150) polarimetric, additional observations. obtained s...

The very large telescopes and the various optical interferometers provide access to unparalleled angular resolutions scientific data of primary importance, but at price instrumental constraints that require complex equipment. correction atmospheric dispersion (i.e. variation air refractive index versus wavelength) is one these constraints. This comes in three forms: (the image a star spread out...

The durability of a control method for plant protection is defined as the persistence of its efficacy in space and time. It depends on (i) the selection pressure exerted by it on populations of plant pathogens and (ii) on the capacity of these pathogens to adapt to the control method. Erosion of effectiveness of conventional plant protection methods has been widely studied in the past. For exam...

In this paper vp(r) denotes the exponent of the highest power of a prime p which divides r and is referred to as the/?-adic order of r. We characterize the/?-adic orders vp(F„) and vp(Ln), i.e., the exponents of a prime/? in the prime power decomposition of Fn and Ln, respectively. The characterization of the divisibility properties of combinatorial quantities has always been a popular area of ...

Condensation and sublimation of ices at the surface planet is a key part both Martian H2O CO2 cycles, either from seasonal or diurnal aspect. While most ice located within polar caps, frost known to be formed during nighttime down equatorial latitudes. Here, we use data Emirates Mars Infrared Spectrometer onboard Mission monitor evolution over almost one year. The unique local time coverage pro...

Oxide/oxide composites are being considered in the aerospace industry for design of next-generation exhaust components. This study aims to determine mechanical behaviour a composite consisting Nextel™610 fibres fabric (8 HSW) embedded porous alumina matrix. The properties were studied tension and four-point bending up 1300 °C. Up 800 °C, material is elastic exhibits few damage with only low eff...

We present a detailed analysis of general relativistic static spherical symmetric distribution in which both the radial and tangential pressures follow master polytropic equation state that generalizes standard treatment avoids appearance singularities system. In particular, we find corresponding Lane-Emden integrate it for wide range values parameters involved. explore parameter space with aim...

Si le déclin des partis de gouvernement en Europe occidentale depuis les années 1970 est pour une part lié à l’apparition nouveaux enjeux et clivages, il résulte principalement du recul la croissance économique, l’augmentation attentes population envers l’État développement comportements contestataires. Ces transformations économiqu...