Surface evaluation of carbon steel doped with nitrogen ions

This studyproposes by meansof analytical characterization techniques, astructural evaluation of the surfacemodification of aferrous material bythree-dimensionalion implantationplasma technology.Carbon steel substrates immerse in a gaseous atMo sphere,were surface implantedwith nitrogen ionsvia high voltage pulse discharges activated at a low-pressure range (“high vacuum”).The effect of the surface treatment on the structure, composition and morphology of the substrates was verified by microscopy and spectroscopy techniques. From the micrographs obtained by scanning electronic microscopy and the analysis elemental by energy dispersive spectroscopy the morphology and nitrogen concentration of thetreated and non-treated samples wereanalyzedand compared. As for the elemental analysis by energy dispersive spectroscopy, nitrogen concentration in the implanted substrates were detected and determinedat a relatively low amount. In regard to the X-raydiffraction results, a decrease in the intensity of the (110), (200)and (211)planes of the treated substratecompared with the reference substrate,wasobserved. Theanalysis ofphases-formation onthe surface materialperformed by Raman spectroscopy, identified mainly ferric oxy-hydroxidestypical uniform corrosion products.

Atmo-Sphere: Art and Conscious Environmental Visualization

It is presented a reflection on the possibilities that Art can have in engaging audiences across the world on activities that foster consciousness and responsibility concerning the future of the Earth. Through interactivity enabled by technology one can propose projects with young artists and observe the impact that Art can have in their lives and the way they face the ever-changing society, its processes/products and how these can affect the environment. A virtual object presented by our research group will be the focus of our theorization concerning: Data, Science and Eco Action looking at Art and Technology through interactive art objects.

Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia

The Andean paramo is an important global carbon sink and has a fundamental ecological function of capture, regulation and supply of water resources. The soil CO2 efflux is a natural process through which the carbon is released into the atmo sphere by molecular diffusion. The aim of this study was to establish the effect of different land use and soil managements practices over CO2 efflux in the Paramo de Guerrero, using the soil respiration chamber technique. We evaluated five differ ent land covers present in the Paramo de Guerrero (paramo vegetation, pasture, two tillage cover and potato crop). Our results show that soil respiration was lower in the paramo (0.42 g CO2 m-2 h-1) than in the others land uses, probably due to the higher moisture content (57.1% on average). The tillage practices showed a primary physical effect, continued by the increase of the velocity of biological and chemical processes drived by soil microorganisms, such as microbial respiration and organic matter mineralization. This study demostrates that moisture and soil temperature were not the main drivers of CO2 flux in the conditions of the Paramo de Guerrero, but the agricultural management and the land use affect differentially the accumulation and release dynamics of soil organic carbon to the atmosphere.

Peter Sloterdijk (1947b)

Peter Sloterdijk is a German philosopher and public intellectual whose work constitutes an original philosophy of becoming, of processes of formation and self-formation. Due to his wide-ranging interests––he has been called a ‘morphological thinker’ and a ‘trainee’ experimenting with new forms and combinations of thought––and his outspoken disdain for the ‘scholastic aberrance’ of institutional philosophy, Sloterdijk has become a singular and contested figure in the intellectual landscape. This chapter examines Sloterdijk’s body of thought and its relevance to organization studies, especially with regard to embodiment, space, affect, and a scholarly ethics of generosity. In particular, it discusses his notions of ‘coming-into-the-world’ and relational movement, cynicism and kynicism, anthropotechnics and acrobatics, spatiality and (atmo)sphere, and thymotic energies and psychopolitics.

Identification of phase-independent spectral lines in close binary V455 CYG: I. Telluric lines

Spectroscopic observations of close binary star V455 Cygni reveal many lines that originate in interstellar and circumstellar medium and the atmo?sphere of the Earth; we found over two hundred such spectral features, and in this paper we present the list of telluric lines we identified through comparison with HITRAN database of molecular lines. The lines that remain unidentified or show peculiar behavior will be discussed in the second part of the paper. .

In-Situ Pretreatment Approach for Surface Deterioration Alleviation Amidst Thermal Desorption of GaAs(100)

Within this study, a novel in-situ pretreatment is proposed theoretically and demonstrated experimentally, in which the formation of surface pits is subsequently stifled during thermal desorption. The proposed method involves fueling the well reviewed chemical oxide reduction reaction with a segregated source of material other than that ordinarily utilized in pit formation. The proposed method is implementable in virtually all deposition systems subject to the constraints of providing material deposition, substrate heating, and the creation of non-oxidizing environments either via vacuum or inert atmo sphere.

The residential-environment climate sense of place in locations of urban revitalization

This paper proposes to use the concept of “sense of place” to describe the particular atmo-sphere prevailing in any specific residential environment. The sense of place is expressed through a number of variables of behavior and variables of personal feeling. The study identifies the sense of place in and around two new housing developments, built in two neglected neighborhoods in the city of Ramat Gan. Results were based on ethnographic analysis of in-depth interviews of residents, half of them living in the new buildings and half of them in adjacent old buildings.