The Turkish accelerator complex IR FEL project

Turkish accelerator complex (TAC) project was approved by State Planning Organization (DPT) of Turkey in 2006. The complex will contain a linac-ring type electron–positron collider as a particle factory and different accelerator based light sources. As a first step to the national center, the construction of an IR FEL facility is planned until 2011. It is also planned that the technical design report for TAC will be completed in 2010. The TAC IR FEL facility will consist of an electron linac in the range of 15–40 MeV energy to obtain FEL in 2–185 microns range. In this study, the preliminary parameters of TAC IR FEL facility were presented. The possible using of the obtained FEL in material science, nonlinear optics, semiconductors, biotechnology, medicine and photochemical processes were discussed.     

Continuous titrations in ultramicrodeterminations

Problems in scaling-down procedures of chemical analysis are generally stated. Titrations are to be preferred over single measurements. Continuous titration in a titration system may help in solving the stated problems. Detection is easy and may be done by simple electrodes. Illustrations from the authors' practice are given.     

The removal of inorganic ions from solutions with fibrous ion-exchange cellulose and checking of the purified substances by neutron-activation analysis

Summary For the rapid removal of heavy metal impurities from large volumes of solutions, ion-exchange cellulose loose fibres have proved to be effective. Distilled water and absolute ethanol were purified by the column technique. For the checking of the effectiveness of the purification, analysis with carboxycellulose and neutron activation were used. The results were in good agreement. The purification is effective up to ppt concentrations.

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Zusammenfassung Zur Entfernung von Schwermetallverunreinigungen aus Flüssigkeiten großen Volumens entsprachen am besten die watte-förmigen Ionaustausch-Zellulosen. Wir haben destilliertes Wasser und absoluten Äthylalkohol von ihren Verunreinigungen in Kolonnen gereinigt. Zur Kontrolle der Wirksamkeit der Reinigung haben wir 1) die Carboxy-Zellulose-Analyse und 2) die Neutronen-Aktivierungsanalyse verwendet. Die Resultate der Methoden 1) und 2) stimmen gut überein. Die Reinigung ist bis zur ppt-Konzentration wirksam.

     

Buchbesprechungen

Ohne Zusammenfassung     

Zur Bestimmung von 2-Thio-3,5-dimethyltetrahydro-1,3,5-thiadiazin (Mylon)

Ohne Zusammenfassung     

Die Titration von Kondensationsprodukten von Formaldehyd und p-Kresol

Ohne Zusammenfassung