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A polyphase filter based on CMOS inverters

A new idea for generation of quadrature signals on chip is presented. The topology is based on a passive RC polyphase filter, where the resistive parts are made active by using inverters. The active filter combines quadrature generation, isolation, and gain without losing quadrature performance compared to a regular RC polyphase filter. The filter technique is demonstrated in a 10GHz front-end app

Synthesis of Spiro-bicyclo[2.2.2]Octane Derivatives Towards the Development of Paclitaxel Mimetics

Popular Abstract in Swedish Många av de föreningar som utvecklas i den farmaceutiska industrin idag har sina rötter i naturprodukter. Paclitaxel, den aktiva substansen i läkemedlet Taxol, återfinns bland annat i idegranens bark. Detta upptäcktes i början av 1960-talet då ett nationellt sökprogram för att finna nya naturprodukter för användning mot cancer organiserades i Amerika. Den låga halten avMany of the drugs that are developed in the pharmaceutical industry have their origin in natural products. Paclitaxel, the active substance of the medicine Taxol, was found in the bark of the Pacific yew tree (Taxus brevifolia). This was discovered in the early 1960's when a screening program was initiated by the National Cancer Institute (NCI) in the US, with the aim to find new natural products

The Multifaceted Impact of Corruption on International Trade

The purpose of this paper is to perform a detailed examination of corruption effects on trade based on corruption characteristics known to affect economic exchange within the corruption research field. These characteristics are the level, prevalence, customs location, function and predictability of corruption. The multifaceted corruption impact on trade is empirically examined using a corrupti

Dagens livsstilar i framtidens perspektiv

In general patterns of lifestyles and behaviour are involved in a complex of factors and social circumstances which easily get lost in analysing the relation between attitudes and behaviour separately. In processes where behaviour are expected to change in a direction where environmental impacts are considered social factors should not be neglected. Even small changes in behaviour have to be coord

Var får instrumentallärarna sina pedagogiska idéer ifrån? : Om bakgrunden till didaktiska ställningstaganden

During my time as Director of Studies at the Municipal Music School of Lund, Sweden, I have had several discussions with teachers, students, parents, municipality civil servants, and politicians. I have concluded that in general, culture schools and music schools are looked upon as institutions where parents safely can send their children convinced about that they get a qualified education regardi

Aroma components in Vangueria infausta L. : Characterization of components using GC_MS and aroma loss during drying

This study focuses on the fruit of the African medlar (Vangueria infausta L., family Rubiaceae). The investigation included the development of an extraction procedure of volatile components from the fruit matrix, a purification step, separation, identification and quantification. Initial experiments showed that some components, especially sugars, degrads during the heating in the GC analysis, prod

Next generation nanotechnologies for sensor array fabrication

New emerging technologies such as nanoimprint lithography (NIL) offers the biosensor research community the possibility to fabricate low-cost biodevices having nanometer dimensions. Such nanosized devices can be applied as biosensors where new functions might emerge due to the nanoscale dimensions. In this paper we will discuss various nanolithography methods as well as the benefits of going to th