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Analog Integrated Audio Frequency Synthesizer

In this paper we present an audio synthesizer that creates audio signals, intended to be reproduced as sound by a loudspeaker. This paper details the design, implementation and verification of an analog, subtractive audio synthesizer. The synthesizer produces a variety of waveforms spanning approximately 3 octaves. The frequency is controlled by an external voltage and the harmonic content is regu

Correlating structure and electronic band-edge properties in organolead halide perovskites nanoparticles

After having emerged as primary contenders in the race for highly efficient optoelectronics materials, organolead halide perovskites (OHLP) are now being investigated in the nanoscale regime as promising building blocks with unique properties. For example, unlike their bulk counterpart, quantum dots of OHLP are brightly luminescent, owing to large exciton binding energies that cannot be rationaliz

Two-photon double ionization of neon using an intense attosecond pulse train

We present a demonstration of two-photon double ionization of neon using an intense extreme ultraviolet (XUV) attosecond pulse train (APT) in a photon energy regime where both direct and sequential mechanisms are allowed. For an APT generated through high-order harmonic generation (HHG) in argon we achieve a total pulse energy close to 1μJ, a central energy of 35 eV, and a total bandwidth of ∼30 e

Crisis Communication in China: A Social Constructionist Approach

Crisis communication is a field dominated by functionalist and objectivist perspectives even though there are exceptions. With a departure in an alternative epistemology – social construc-tionism – this paper provides a reflective approach to understand crisis communication as a contextual and cultural construction process. Focusing on the social construction of crisis brings a much-needed approac

Increased deposition of glycosaminoglycans and altered structure of heparan sulfate in idiopathic pulmonary fibrosis

Idiopathic pulmonary fibrosis (IPF) is characterized by aberrant deposition of extracellular matrix (ECM) constituents, including glycosaminoglycans (GAGs), that may play a role in remodelling processes by influencing critical mediators such as growth factors. We hypothesize that GAGs may be altered in IPF and that this contribute to create a pro-fibrotic environment. The aim of this study was the

Mycobacteria Manipulate G-Protein-Coupled Receptors to Increase Mucosal Rac1 Expression in the Lungs

Mycobacterium bovis bacille Calmette-Guérin (BCG) is currently the only approved vaccine against tuberculosis (TB). BCG mimics M. tuberculosis (Mtb) in its persistence in the body and is used as a benchmark to compare new vaccine candidates. BCG was originally designed for mucosal vaccination, but comprehensive knowledge about its interaction with epithelium is currently lacking. We used primary a

Law, Policy and Social Control Amidst Flux

This chapter will begin with a brief discussion of early modernity and the rise of the welfare state, before going on to explore how law and legal regulation change as we enter “late modernity”. The notion of “late modernity” – not to be confused with postmodernity – captures how industrially advanced societies evolve, when globalisation, aided by information technology, accelerates rapidly at theThis chapter will begin with a brief discussion of early modernity and the rise of the welfare state, before going on to explore how law and legal regulation change as we enter “late modernity”. The notion of “late modernity” – not to be confused with postmodernity – captures how industrially advanced societies evolve, when globalisation, aided by information technology, accelerates rapidly at the