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Perspektiv på Världspolitik

Under de senaste tio åren har intresset för studier i internationell politik ökat kraftigt. Samtidigt har forskningsområdet breddats både avseende vad som studeras, exempelvis kapprustning, miljörörelser eller historisk utveckling, och hur det studeras. Perspektiv på världspolitik tar fasta på dessa förändringar och betonar ämnets bredd samt ger en nyanserad och djuplodande presentation av såväl

A novel approach to negative feedback in RX front-ends

A new approach to negative feedback is proposed and applied to active mixer cells based on Gilbert multiplier. The feedback can be exploited in several ways, and different configurations are derived. A dual-loop topology provides a solution for inductor-less broad-band receiver stages. The nature of the dual loop ensures controlled gain and input matching, and a first-order linearity analysis is p

A peptidyl derivative structurally based on the inhibitory center of cystatin C inhibits bone resorption in vitro

Human cystatin C is a cysteine proteinase inhibitor belonging to the cystatin superfamily, which previously has been shown to inhibit bone resorption in bone organ culture. The aminoterminal segment, Arg8-Leu9-Val10-Gly11 (RLVG), of the single polypeptide chain of cystatin C constitutes an essential part of its inhibitory center. In the present study, the effect of benzyloxycarbonyl-Arg8-Leu9-Val1