The effect of adenosine-3',5'-cyclic monophosphate (cyclic AMP) and N(6),O(2)-dibutyryl adenosine-3',5'-cyclic monophosphate (dibutyryl cyclic AMP) on renal tubular permeability was studied by microinjection techniques in anesthetized diuretic rats. Radioactive inulin and mannitol were microinjected simultaneously into superficial proximal and distal convolutions and recovery of the isotopes wa...

Abstract. PM2.5 haze pollution driven by secondary inorganic NO3- has been a great concern in East Asia. It is, therefore, imperative to identify its sources and oxidation processes, for which nitrogen oxygen stable isotopes are powerful tracers. Here, we determined the δ15N (NO3-) Δ17O of Seoul during summer 2018 winter 2018–2019 estimated quantitatively relative contribution pathways particul...

Abstract. We analyzed air samples collected on board a C-130 cargo aircraft over the western North Pacific from May 2012 to March 2020 for atmospheric δ(O2 / N2) and CO2 amount fraction. Observations were corrected significant artificial fractionation of O2 N2 caused by thermal diffusion during sample collection using simultaneously measured δ(Ar N2). The observed seasonal cycles potential oxyg...

The effects of an adenosine 3’:5’-monophosphate (cyclic AMP)-dependent protein kinase on Ca2+-activated adenosine triphosphatase (ATPase) activity and calcium uptake of canine cardiac microsomes were examined. The cardiac microsomes, which represent an enriched preparation of fragmented sarcoplasmic reticulum, were preincubated with varying concentrations of cyclic AMP-dependent protein kinase ...

Abstract. A comprehensive European dataset on monthly atmospheric NH3, acid gases (HNO3, SO2, HCl), and aerosols (NH4+, NO3-, SO42-, Cl?, Na+, Ca2+, Mg2+) is presented analysed. Speciated measurements were made with a low-volume denuder filter pack method (DEnuder for Long-Term Atmospheric sampling, DELTA®) as part of the EU NitroEurope (NEU) integrated project. Altogether, there 64 sites in 20...