Commercial Recreation On Private Lands Some Basic Considerations.

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Исследование структуры и физико-механических свойств спеченного антифрикционного материала системы Fe-Ti

In this article are presented results of research of structure and physicomechanical properties of the sintered material of Fe-Ti system. It is shown that this material possesses high tribotechnical characteristic on comparisons with sintered iron free. In the conclusion are offered parameters of receiving this material with high physicomechanical properties

The cratering record of Ganymede and the origin of potential impactors: open issues

The origin of impactors on the Galilean satellites of Jupiter is an open question. In this study we present results from a mapping campaign based on reprocessed Voyager and Galileo SSI images in order to derive a thourough data base of Ganymede's crater distributions

Olivine or Impact Melt: Nature of the "Orange" Material on Vesta from Dawn

NASA's Dawn mission observed a great variety of colored terrains on asteroid (4) Vesta during its survey with the Framing Camera (FC). Here we present a detailed study of the orange material on Vesta, which was first observed in color ratio images obtained by the FC and presents a red spectral slope. The orange material deposits can be classified into three types, a) diffuse ejecta deposited by recent medium-size impact craters (such as Oppia), b) lobate patches with well-defined edges, and c) ejecta rays from fresh-looking impact craters. The location of the orange diffuse ejecta from Oppia corresponds to the olivine spot nicknamed "Leslie feature" first identified by Gaffey (1997) from ground-based spectral observations. The distribution of the orange material in the FC mosaic is concentrated on the equatorial region and almost exclusively outside the Rheasilvia basin. Our in-depth analysis of the composition of this material uses complementary observations from FC, the visible and infrared spectrometer (VIR), and the Gamma Ray and Neutron Detector (GRaND). Combining the interpretations from the topography, geomorphology, color and spectral parameters, and elemental abundances, the most probable analog for the orange material on Vesta is impact melt

Unions and Urinalysis

Many private employers seem to be busy deciding whether and how to test employees for drug use. Presumably most of these decisions are made by management acting alone. However, in unionized workplaces—one out of five private sector employees are represented by unions—federal labor law prescribes a different method. That method features collective bargaining by unions and management to set the rules, the use of a private third-party neutral to resolve disputes which arise under those rules (arbitration), and relatively little involvement by the government (the National Labor Relations Board, legislatures, and the courts). This system that labor law prescribes for dealing with the problem of drug testing is complex. Part I of this article describes that system, with a focus on the prominence of private standards and methods compared to the minor impact of public law and processes. Part II comments on this system, addressing two related questions: First, is the labor law system a wise one for resolving the issue of drug testing in unionized workplaces? The short answer is yes, although the role of public law should be increased. Second, are there lessons for the non-unionized sector? The short answer is that some features of the system used in unionized settings could be used in non-unionized settings, but only with modifications. Throughout, the article focuses on the issue of whether to test employees for drug use, although it touches on related issues, such as discipline for drug use, as well