Gas chromatographic methods for the determination of cyclic organic acid anhydrides (OAAs) in industrial air are reviewed. The OAAs discussed are phthalic, hexahydrophthalic, methylhexahydrophthalic, tetrahydrophthalic, methyltetrahydrophthalic, trimellitic, maleic, and octenylsuccinic anhydride. Solid sorbent sampling methods, using Amberlite XAD-2 or Tenax, are used for sampling of OAA vapour. T

Abstract is not available

The text is an introduction to a collection of articles from the research project The Holocaust and European Historical Culture.

När man möter en mamma eller pappa berättar de kanske om sitt barn. Men är barnen deras? I många andra sammanhang talas det om våra barn: skolan, sjukvården, föreningar gör också anspråk på att äga barnen. Världen kring handikappade barn sätter förhållandet på sin spets: där finns en myriad av yrken och institutioner, som hävdar att de både vet mer och vet bäst. Experternas kunskaper är eftersökt

When the Ostra Torn area of Lund, Sweden was further developed in the 1990s, storm water was connected to the old separate storm water system. This increases the risk of flooding near the connection points. In this paper, the function of the system is analyzed using Storm Water Management Model SWMM. Consequences of extreme storms are investigated: It is shown that it is not necessary to connect t

A 10 GHz beam forming transmitter was designed in a 90 nm CMOS process. Two power amplifiers with independently controllable phase enable the beam forming. The controllable phase is accomplished by switching in binary weighted transistors fed by quadrature signals, which are generated by a quadrature voltage controlled oscillator followed by a buffer. The design contains seven differential on-chip

Time series analysis of population abundances is a common approach to making inferences about population dynamics, and especially for estimating density dependence. Traditionally the impact of potential errors in observations or measurements of the abundances on inference has been ignored. Following the increased availability of appropriate software as well as statistical awareness among ecologist

This study targeted soft cheese production, investigating the permeability and syneresis properties of rennet-induced skim milk gels.

Strukturmekanik är den del av fysiken som beskriver hur olika material, som formats och sammanfogats till strukturer, bär sina laster. Kunskapen om dessa strukturers verkningssätt kan användas i en skapande process där hållbara och effektiva, funktionella och uttrycksfulla byggnadsverk utformas. Den här läroboken i strukturmekanik baseras på finita elementmetodens metodik. Förståelsen för struktu

Abstract is not available