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The detection of spectral line profile variability for stars of the HgMnclass of chemical peculiarity has been poorly documented in theliterature yet holds a special significance for understandingrelationships between observed spectral anomalies, stellar surfacestructure, and magnetic fields. The HgMn stars have until now not beenconfirmed to vary in their light or spectral characteristics in ways
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Despite a sizable functional literature on variation and change, very little attention has been given to the diachronic mechanisms of meaning shifts and change covering the whole continuum from contentful to configurational meanings. This chapter is an attempt to begin filling this gap. It proposes a unitary approach to the mechanisms of variation and change within the Cognitive Linguistics framew
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Protein phosphorylation in the subcompartments of plant mitochondria was investigated by labelling with [gamma-32P]ATP and by SDS-PAGE/autoradiography. About 20 proteins in inside-out inner mitochondrial membranes from potato tubers were phosphorylated by endogenous protein kinases when incubated with [gamma-32P]ATP. None of the phosphorylated proteins were labelled when using [alpha-32P]ATP as a
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This paper presents a prototype 3.1-8.2 GHz UWB transmitter front-end based on a novel transmitted reference pulse cluster (TRPC) scheme in the 0.13-μm CMOS process. The transmitter front-end consists of wideband low noise active baluns, IQ modulator based on noise-cancellation mixers with high linearity, and differential to single-ended (D-to-S) converter. The measurements show that the worst-cas
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A major issue related to our modern way of life is the noise caused by jet engine powered airliners. Methods to reduce the jet noise were proposed in the last decades starting with the introduction of high bypass turbofan engines. A numerical investigation of flow and acoustics of a separate flow exhaust system is performed in the present paper. The goal is to investigate how the noise generated b