New complexes of VO(II), Zn(II), Pd(II), Au(III) and Pt(IV) with atenolol (ATN) hypertensive drug ligand were synthesized and characterized by elemental analysis, conductometry, magnetic susceptibility, UV–Vis, IR, ESR, 1H-NMR spectroscopy, X-ray diffraction analysis of powdered samples, scanning electron microscopy (SEM), and thermal analysis. The IR spectral data suggested that the ATN ligand...

Two simple, accurate and reproducible spectrophotometric methods have been developed for the simultaneous estimation of Hydrochlorothiazide (Hctz), Atenolol (Atn) and Losartan potassium (Los) in combined tablet dosage forms. The first method involves determination using the simultaneous equation method, the sampling wavelengths selected are, 272.5 nm, 224 nm and 250 nm over the concentration ra...

Nitrification, denitrification and nitrate reduction rates in the sediments at two stations in Hiroshima Bay were studied seasonally from August 1994 to May 1995. The acetylene (C2H2) inhibition technique was used to evaluate the rate of these processes. The seasonal average of nitrification and denitrification rates ranged from 0.00 to 299 μg atN m–2h–1 and 0.00 to 69.0 μg atN m–2h–1, respecti...

In interactive multimedia presentations, users should have the exibility to decide on various scenarios they want to see. This means that two-way communications should be captured by the conceptual model. An abstract semantic model, the augmented transition network (ATN), is proposed for modeling user interactions in multimedia presentations. In ATNs, each state node allows multiple outgoing ar...

A simple method that reproducibly creates validation/reference materials for comparison of methods measure the carbonaceous content atmospheric particulate matter deposited on filter media at concentrations relevant to levels has been developed and evaluated. Commonly used determine major components particles collected filters include optical attenuation “Black” (BC) “Brown” (BrC) carbon, therm...