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This paper describes a low distortion wide band CMOS direct digital RF amplitude modulator, which uses a 10-bit linear interpolation current steering digital to analog converter (DAC) and a Gilbert cell based mixer to generate an amplitude modulated RF signal directly. The linear interpolation increases the attenuation of the DAC's image components. The low pass filter (LPF) is therefore eliminate

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Popular Abstract in Swedish Fysiologisk integrering och morfologisk plasiticitet i stora klonala växter Många av våra vanligaste växter är klonala, dvs de kan producera avkommor utan sexuell befruktning. Hit räknas blåbär och lingon, många av våra vårväxter som tex. vitsippa och flera av våra värsta ogräs, som kvickrot och kirskål. En fördel som klonala växter har är att dotterskott som fortsätteClonal plants show a large variation in physiological integration, i.e. the translocation of resources among ramets within the clone. As resource transport is costly, we hypothesized that plants from poor sites should be more highly integrated than plants from rich sites and that plants would benefit if they were plastic in their degree of integration. Tracers were used to study the transport of w

A large number of legal rules create an obligation to prevent, repair or otherwise mitigate damage to human health or the environment. Many of these rules require that a legally relevant causal relation between human behaviour and the damage at issue is established, and in the establishment of causal relations of this kind scientific information is often pressed into service. This thesis examines

Popular Abstract in Swedish Ett antal optiskt aktiva metalloorganiska Phe-AAn-Phe subenheter har syntetiserats via intramolekulär cyklisering av motsvarande bis(aminosyra)derivat. Bis(aminosyra)derivaten var i sin tur erhållna från en förbättrad multistegssyntes, vars nyckelsteg är Horner-Wadswort-Emmons olefinering av metalloorganiska aldehyder med fosfonylglycin-reagens, enantioselektiv hydrogenSeveral optically active organometallic Phe-AAn-Phe peptidomimetics and macrocyclic Phe-(Phe)n peptides have been synthesized by either intra- or intermolecular peptide bond formation of the corresponding bis(amino acid) derivatives. The key bis(amino acid) derivatives were available from an improved multi-step synthetic route, utilising Horner-Wadswort-Emmons olefination of organometallic aldehyd

Christopher Polhem (1661-1751), called the father of Swedish mechanics, is the most famous figure in Swedish history of technology and our nation's foremost inventor ever. Remarkably enough, a close survey in a monograph has never been written on this inventor who in many ways initiated the technical and industrial development of Sweden. In this project will Polhem for the first time get a broad a

Popular Abstract in Swedish Spårbarhet av livsmedel för att garantera ursprung, kvalitet och säkerhet i samband med produktion och transport har blivit alltmer uppmärksammat i samhället. Kraven på att livsmedel skall vara kvalitetsmässigt säkerställda samt miljömässigt hållbara har vuxit sig starkare från konsumenter såväl som från myndigheter. En bidragande orsak är den ökade fokuseringen kring bFood traceability is gaining increased attention in food companies and governmental authorities. This is because of the increase in legal and consumer requirements on ensuring food safety, quality and preservation of living resources. These requirements especially apply to the management of food traceability in regulated fresh food supply chains. Several studies have shown that management of food

This chapter takes its departure in the persistent mythology surrounding the so-called forest Finns who migrated from Finland to Sweden and further on to America in the seventeenth century. The forest Finns have traditionally been regarded as a clear-cut and bounded ethnical group, represented by a specific suit of material culture and practices. However, by comparing archaeological remains and wr

Mahler var under sin korta livstid en omstridd gestalt och hans musik har kämpat sig genom 1900-talets omvälvande historia för att idag utgöra en självklar del av repertoaren hos orkestrar världen över. Mahlers karriärväg gick genom ett omstörtande och dynamiskt Centraleuropa och arvet efter Mahler skulle komma att präglas av politiska och estetiska rågångar med rötterna i hans egen tid. I denna a