Fluorine Kα radiation for the excitation of electron spectra

The applicability of the F Kα X-ray line (hv = 676 eV) from potassium fluoride for the excitation of electron spectra is demonstrated. Relative photoionization cross-sections in Au and gaseous Hg have been measured. The F Kα radiation from KF, RbF and CsF has been studied. The Ba Mζ line (hv = 602 eV) is found to be too broad for use in ESCA, even when emitted from metallic barium.     

Eine Elektrophoresebestimmung von Kreatinin in Fleischextrakt, Fleisch und kohlenhydrathaltigen Fleischprodukten

Ohne Zusammenfassung     

Beryllium

Ohne Zusammenfassung     

Proton pulse radiolysis

A 5 Me V proton accelerator has been used for pulse radiolysis of organic gases. The transient spectra obtained from the alkanes methane, ethane, propane, n-butane and neopentane have tentatively been assigned to alkyl radicals. Some methodological aspects of this new technique are discussed.     

Microwave-promoted and chelation-controlled double arylations of terminal olefinic carbon of vinyl ethers

Herein we report a rapid, palladium-catalyzed terminal diarylation of the chelating olefin N,N-dimethyl(2-ethenyloxy)ethanamine under noninert conditions utilizing controlled microwave heating as a convenient energy source. Among the aryl bromides examined, both electron-rich and electron-poor substrates were demonstrated to furnish useful yields after only 10-120 min of directed microwave heating at 160-200 degrees C. The good terminal regioselectivity suggests that the precatalyst (Herrmann's palladacycle) serves as a source of weakly coordinated palladium(0) in the investigated high-temperature Heck process.     

An efficient method to perform milliliter-scale PCR utilizing highly controlled microwave thermocycling

This communication describes the development of a controlled microwave methodology for rapid milliliter-scale PCR.