We have obtained narrow-band images of the Orion Molecular Cloud OMC–1 in various infrared transitions of molecular hydrogen. The molecular emission from levels with low excitation energies (<∼ 15 000K) is made up of numerous linear, jet–like structures. Their collimation factor is typically about 10 and there is no appreciable outward broadening. Most of these structures are arranged radially ...

The presence of structure H (sH) methane hydrate in natural environments, in addition to the well-known structure-I (sI) and II (sII) hydrates, has recently been documented. Methane in the presence of condensates (C5-C7) forms sH hydrate at lower pressure than the sI hydrate. Thus, the occurrence of sH methane hydrate is likely to have both beneficial and negative practical implications. On the...

New structure function results from H1 are presented. The measurements cover a huge kinematical range for Q, the four momentum transfer squared, from 0.35GeV to 30 000GeV, and for Bjorken x between ∼ 5 · 10 and 0.65. At Q > 100GeV, full HERA I data have been analyzed. The data are compared with a new QCD analysis. The impact of the HERA I data on the parton density functions is discussed. azhan...

Multicomponent condensation of 1-naphthol, malononitrile, and arylglyoxals in the presence of Mg-Al hydrotalcite under solvent-free MicroWave (MW) conditions gave a new series of 2-amino-4-aroyl-4H-benzo[h]chromene-3-carbonitriles in high yields (70-89%). The structure of all products was elucidated by their...

Previously we have shown that the topos approach to quantum theory of Doering and Isham can be generalised to a class of categories typically studied within the monoidal approach to quantum theory of Abramsky and Coecke. In the monoidal approach to quantum theory H∗–algebras provide an axiomatisation of states and observables. Here we show that H∗–algebras naturally correspond with the notions ...

From the aerial parts of Tanacetum balsamita L. (Compositae) a flavonol aglycon was iso­lated using chromatographic techniques. The structure of this compound was determined using spectroscopic methods (UV, H-NMR and MS) as 3',4',5,7-Tetrahydroxy flavonol (Quercetin).

h

New bionanocomposite proton exchange membranes were prepared from sulfonated polybenzimidazole (s-PBI) and various amounts of sulfonated ZnO/cellulose nanohybrids (ZnO/cellulose-SO3H). The use of ZnO/cellulose-SO3H compensates for the decrease in ion exchange capacity of membranes observed when non-sulfonated nano-fillers are utilized. The strong –SO3H/–SO<su...