We introduce a new ideal D of the p-adic Galois group-ring associated to a real abelian field and a related ideal J for imaginary abelian fields. Both result from an equivariant, Kummer-type pairing applied to Stark units in a Z p-tower of abelian fields and J is linked by explicit reciprocity to a third ideal S studied more generally in [So3]. This leads to a new and unifying framework for the...

Energy Dispersive X-Ray Fluorescence Technique was used to study the chemical compositions of rice husk in four selected Local Governments, namely-Wudil, Tofa, Kura and Rano Kano State, Nigeria. Rice is edible part paddy one major agricultural wastes that has potential produce composition which can be useful manufacturing industries. The samples were obtained during dry season grounded into pow...

A novel ferrocene-containing dianion, Fe(C5H4-CH(CH3)NHCOCH2SO3 – )2 (1), has been prepared. The oxidation potential of the PPh4 salt is +0.35 V (vs. SCE in PhCN), indicating that it is a stronger donor than TTF (tetrathiafulvalene) by +0.03 V. The dianion provided a TTF salt, the structure and physical properties of which are reported. Over the past three decades a growing subject in the field...

The atmospherically highly relevant methylsulfinyl radical (CH3(O)S˙) readily reacts with molecular triplet oxygen in cryogenic argon matrices containing small amounts of (3)O2. Comparison of experimental and computed IR- and UV/Vis spectra, including isotope exchange, show that the initially formed (3)O2 adduct has the structure of a peroxyl radical (CH3(O)SOO˙), which upon irradiation with UV...

LaPSvS1, a highly sulfated branched (1 3)-galactan was prepared from the arabino-galactan from Larix decidua Miller by partial hydrolysis and subsequent sulfation with SO3-pyridine in DMF. The molecular weight was analyzed by GPC and the sulfate content was determined by ion chromatography. LaPSvS1 exhibited good antiangiogenic and antiinflammatory effects in two different modifications of the ...

As one of the youngest back-arc basins, evolutionary behavior magmatic volatiles in Eastern Manus Basin has been poorly studied. Recently, apatite received widespread attention for its powerful function recording information on volatiles. In this paper, by determining major element compositions and primary volatile abundances (F, Cl, SO3) apatites dacite, we analyze before magma eruption Basin,...