We performed electron spin resonance (ESR) measurements on two kinds of nickel chain compounds doped with nonmagnetic Zn2+ ions, Ni(333-tet)( -NO2)(ClO4) (333-tet=bis-(3-aminopropyl)-1,3-propanediamine) abbreviated as NTENP and Ni(1,3-pn)2( -NO2)(ClO4) (1,3-pn=1,3-propanediamine) abbreviated as NINO which are regarded as a spin (S) one Heisenberg antiferromagnetic bond alternating chain and a u...

Correspondence to: 5 6 Robert Sachdev ([email protected], [email protected]) and Hitten 7 Zaveri ([email protected]) 8 9 1. Institute for Biology, Humboldt University of Berlin, Chariteplatz1, Neuroscience 10 Research Center – Campus Mitte, Virchowweg 6, 11 Charité CrossOver Building , 3 floor, 10117 Berlin, Germany 12 13 2. Department of Neurology, 14 Hôpital Erasme ULB 15 ...

Susceptibility, ESR, and magnetization measurements have been performed on single crystals of an S = 1 bond alternating chain compound: [Ni(333-tet) (mu-NO2)] (ClO4) (333-tet = N,N'-bis(3-aminopropyl)propane-1,3-diamine) and the compound doped with a small amount of Zn. We observed an anomalous angular dependence in the Zn-doped sample. These results are well explained by the model based on the...

Three new enantiopure aryl-thioureas have been synthesized, N-(4-X-phenyl)-N-[1(S)-1-phenylethyl]thiourea, X= Cl, Br, and NO2 (compounds 1-3, respectively). Large single crystals of up to 0.5 cm(3) were grown from methanol/ethanol solutions. Molecular structures were derived from X-ray diffraction studies and the crystal morphology was compared to calculations employing the Bravais-Friedel, Don...

A novel technique has been developed for the detection of peroxy radicals in order to study their kinetics with NO2. Peroxy radicals (RO2, where R = H, CH3, and 1,2-C4H9) were produced by laser flash photolysis and were probed by photodissociation of the RO2 and the subsequent detection of either OH or CH3O photofragments by laser-induced fluorescence. Reaction 1 , CH3O2 + NO2 + M ⇌ CH3O2NO2 + ...

BACKGROUND Nitrogen dioxide (NO2), a ubiquitous atmospheric pollutant, may enhance the asthmatic response to allergens through eosinophilic activation in the airways. However, the effect of NO2 on inflammation without allergen exposure is poorly studied. OBJECTIVES We investigated whether repeated peaks of NO2, at various realistic concentrations, induce changes in airway inflammation in asth...

tion of smooth muscle through the action of the enteric nerve system. Clinically, pain caused by gastrointestinal spasms is generally treated with drugs that induce smooth muscle relaxation. Shakuyakukanzoto (Shaoyao-Gancao-tang, an aqueous extract of a mixture of Paeoniae Radix and Glycyrrhizae Radix) and Kanzoto (an aqueous extract of Glycyrrhizae Radix) have been used clinically to relieve g...

The time-kinetics of NO2 induced effects on bronchial responsiveness are poorly known as most observations have been made shortly after exposure. The aim of this study was to measure nonspecific bronchial responsiveness, lung function and inflammatory markers at different times after NO2 exposure in asthmatics. Nineteen subjects with mild asthma were exposed to either purified air or 488 microg...

Temperature-programmed NO2 emissions from frozen aqueous NaNO3 solutions irradiated at 313 nm were monitored as function of nitrate concentration and heating rate, H, above -30 degrees C. Emissions increase nonmonotonically with temperature, displaying transitions suggestive of underlying metamorphic transformations. Thus, NO2 emissions surge at ca. -8 degrees C in frozen [NO3-] > 200 microM sa...

1Elements Strategy Initiative Center for Magnetic Materials, National Institute for Materials Science, Tsukuba 305-0047, Japan 2Computational Materials Science Center, National Institute for Materials Science, Tsukuba 305-0047, Japan 3Research Center for Strategic Materials, National Institute for Materials Science, Tsukuba 305-0047, Japan 4School of Physics, University of Sydney, Sydney 2006, ...