To test whether the established B/Cl ratio (0.2414 mg·kg–1·‰–1) derived for the open ocean is applicable to coastal systems globally, we measured the B concentration and salinity of seawater samples (n = 245) collected from the coastal waters of the Yellow, East China, and East Seas. We also measured the B concentration of freshwater samples (n = 10) from six rivers discharging into these seas and analyzed along with the B concentrations of other rivers globally, obtained from literatures. Our results show that the supply of riverine B (2–6 μmol B/kg) did not discernably alter the B/Cl ratio in most estuarine systems. The impact of this riverine B input on the interconversion between total alkalinity ([HCO3–] + 2[CO32–] + [B (OH)4–] + others) and carbonate alkalinity ([HCO3–] + 2[CO32–]) is less than a few micromoles per kilogram for most estuarine and coastal systems, although exceptions in the Baltic Sea do occur.

New Bisabolane Sesquiterpenes from the Rhizomes of Curcuma xanthorrhiza Roxb. and Their Inhibitory Effects on UVB-Induced MMP-1 Expression in Human Keratinocytes. -Two new bisabolane sesquiterpenes (I), and (II) are isolated along with five known ones from the rhizomes of Curcuma xanthorrhiza ROXB. Compound (II) is found to decrease MMP-1 expression in UVB-treated human keratinocytes. -(PARK, J.-H.; JUNG, Y.-J.; ANTAR AZIZ MOHAMED, M.; HOON LEE, T.; LEE, C.-H.; HAN, D.; SONG, M.-C.; KIM, J.; BAEK*, N.-I.; Helv. Chim. Acta 97 (2014) 3, 438-446, http://dx.

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N-Substituted-3-arylpyrrolidines: Potent and Selective Ligands at Serotonin 1A Receptor. -Title compounds (V) are prepared by coupling reaction with diarylcuprates as the key step. (Vc) shows good selective affinity to the 5-HT 1A receptor. Derivative (Va) seems to be a possible candidate for the development of antianxiety and antidepressant agents.