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Comparision between (111)B and (100) III-V nanowhiskers

Epitaxial III-V nanowhiskers have been grown with orientation in the [111]B and [100] directions. While the nature of the crystal structure in the (111)B type of whiskers varies more or less at random between hexagonal (wurtzite) and cubic (zincblende) structure, the (100) type whiskers are of single crystal zincblende structure. We show that the bounding surface facets of the whiskers are either

Carbon Credits: Origins, Effectiveness & Future

Popular Abstract in Swedish En kolkredit motsvarar i teorin en minskning av växthusgaser motsvarande ett ton koldioxid. Dessa krediters miljömässiga trovärdighet har varit en het diskussionsfråga i akademiska och politiska sammanhang i många år men blev mer allmänt uppmärksammat i tv och nyheter efter att FNs Kyotoprotokoll trädde i kraft 2005. Kyotoprotokollet är ett internationellt klimatavtal dCarbon credits are used as an instrument for climate change mitigation. Each credit represents a reduction in greenhouse gas emissions (GHGs) equivalent of 1 ton of carbon dioxide. Crediting mechanisms and the Clean Development Mechanism (CDM) of the Kyoto Protocol in particular have been important for the international efforts to limit GHG emissions and the engagement of developing countries in m

A 90nm CMOS UWB LNA

A single-ended two-stage 3.1-10.6GHz Low Noise Amplifier aimed for Ultra Wide Band (UWB) communication is presented. The LNA is fabricated in a 90nm CMOS process and measures just 0.31x0.41 mm2 including pads. The first stage topology is common-gate, to achieve a wideband input match. The second stage is a common source stage with resistive shunt feedback, to achieve high and flat gain over a wide

Postphenomenology vs Postpositivism : Don Ihde vs Bruno Latour

Our presentation will try to clarify the differences between Postphenomenology and Postpositivism. Contemporary studies of technology and its relation to science are very much inspired by the works of Don Ihde and Bruno Latour.Updated February 2016.

A novel soft-input soft-output reduced complexity MIMO trellis detector

In this paper we propose a novel trellis based soft-input soft-output MIMO detector with significantly reduced search space. The performance of the detector is measured by evaluating the ultimate communication rate that is achievable for a system employing the novel detector; this limit corresponds to a mutual information that can be determined by standard methods. We also derive an expression tha

Carl Schmitt’s definition of sovereignty as authorized leadership

Reading Political Theology in light of the later developed concrete-order thinking, this essay draws attention to the understanding of law, which allows Schmitt to present the sovereign as simultaneously standing inside and outside the legal order. In addition, the particular way of ordering the political community, which Schmitt’s notion of sovereignty advances, is also explored. The essay sugges

Radikalare än Hitler? De esoteriska och gröna nazisterna

Boken ger en samlad framställning av en föga uppmärksammad idéströmning under 1900-talet: den esoteriska och gröna fascismen. Mängder av enskilda personer, grupper, organisationer och publikationer som under århundradet bidrog till att forma idéströmningen är avsevärd. Här möter såväl bekanta namn som August Strindber och Mircea Eliade dom numera glömda, som Karl Maria Wiligut eller Johann von Lee

Annual ecosystem respiration budget for a Pinus sylvestris stand in central Siberia.

Using a ground-based and an above-canopy eddy covariance system in addition to stem respiration measurements, the annual respiratory fluxes attributable to soil, stems and foliage were determined for a Scots pine (Pinus sylvestris L.) forest growing in central Siberia. Night-time foliar respiration was estimated on the basis of the difference between fluxes measured below and above the canopy and

Direct and indirect effects of fish predation and excretion in aquatic food webs

The aim of this thesis was to elucidate the mechanisms by which planktivorous fish can affect planktonic communities in lakes and how they may affect benthic communities through their effects on planktonic communities. In a laboratory experiment, nutrients released by fish increased algal biomass and altered phytoplankton community structure, suggesting that fish can affect phytoplankton by direct