The activity of the plasmalemmal Na(+)/Ca(2+) exchanger (NCX) is highly sensitive to temperature. We took advantage of this fact to explore here the effects of the NCX blocker KB-R7943 (KBR) at 22 and 37°C on the kinetics of Ca(2+) currents (ICa), cytosolic Ca(2+) ([Ca(2+)]c) transients, and catecholamine release from bovine chromaffin cells (BCCs) stimulated with high K(+), caffeine, or histam...

470 Ó WILEY-VCH Verlag GmbH, D-69469 Weinheim, 1998 0935-9648/98/0604-0470 $ 17.50+.50/0 Adv. Mater. 1998, 10, No. 6 FTIR (KBr): n = 2245, 2180, 2115, and 1024 cm. 13 C CP MAS NMR (resonance frequence 100.61 MHz, spining rate 12 kHz): d = 80.6, 69.4, 64.6, 56.7, 52.4, 26.3 and 10.9. Elemental analysis: calcd for ZrC12H18O4: Zr 28.75, C 45.39, H 5.67, O 20.19; found: Zr 33.50, C 41.35, H 5.35. T...

A novel reconstruction of a two-dimensional layer KBr on an Ir(111) surface is observed by high-resolution noncontact atomic force microscopy and verified density functional theory (DFT). The structure oriented along the main directions surface, but forms characteristic double-line pattern. Comprehensive calculations DFT, taking into account periodicities, resulted in new low-energy reconstruct...

The Hofmann-type rearrangement of aromatic and aliphatic imides using KBr as the catalyst proceeded to provide aromatic and aliphatic amino acid derivatives. We have also developed a new synthetic route to gabapentin with this method.

The salting-out effect of various solutions of electrolyte in the extraction of tantalum and niobium using aqueous biphasic system (ABS) was investigated. This was achieved by leaching ball-milled Tantalite ore with mineral acids (H2SO4 and HF) in the ratio of 3:1. The leached liquor was then divided into five parts and each part mixed with ABS formed (e.g. PEG-3350/20wt/wt Na2CO3) for the extr...

— The position of interstitial atoms involved in the Wcenter in KBr crystal has been determined with the double alignment channeling technique. An optical absorption measurement of KBr crystal irradiated with protons or heliums at liquid nitrogen temperature assured that the V4-center is the predominant radiation-induced interstitial defect. A well collimated beam of 1.25 Me V He ions was incid...

We have studied the UV sensitivity degradation of CsI and KBr thin films under UV illumination and the stability of their visible light rejection for CsI and KBr opaque photocathodes evaporated on microchannel plates. For both materials the greatest degradation of the relative quantum detection efficiency (QDE) was observed near the photocathode sensitivity cut off, while there was almost no ch...

The feasibility of static secondary ion mass spectrometry (S-SIMS) for the detection of molecule specific information from complex materials, such as natural clay and soil samples, has been investigated. Ion trap (IT), as well as triple quadrupole (TQ) instruments, have been used for mass analysis. Secondary ion images have been acquired using time-of-flight (TOF) S-SIMS. The generation of mole...

A facile and efficient method was developed for the synthesis of highly active palladium nanoparticles (PdNPs) by microwave-assisted chemical reduction. The PdNPs with different morphology were prepared with or without KBr (capping agent) using ethylene glycol (EG) and citric acid (CA) as reducing agent in the presence of polyvinylpyrrolidone (PVP), respectively. The as-prepared PdNPs were char...