1. Measurements of electrical potential difference (PD), short-circuit current (SCC) and unidirectional fluxes of sodium and chloride were made across portions of the intestine. Based on the results, the intestine can be divided into at least four physiologically distinct regions. 2. These four physiological regions, designated from anterior to posterior as R I-II, R III A, R III B and R IV, do...

The complexation behavior of pillar[6]arene hosts towards a carbonium ion, tropylium tetrafluoroborate (T·BF4), and the formation of novel charge-transfer (CT) inclusion complexes are described. In contrast, smaller pillar[5]arenes and larger pillar[7]arenes cannot form such complexes due to the unsuitable cavity dimensions.

Standard acetonitrile/tetraalkylammonium-tetrafluoroborate-based electrochemical capacitor electrolytes were modified with both fluorinated additives (including analogs of ethylmethyl carbonate and diethyl carbonate, lithium difluoro(oxalato)borate, tris(2,2,2-trifluoroethyl) phosphite) spiro(1,1?)-bipyrrolidinium tetrafluoroborate salt, to improve stability at higher voltages (>2.7 V). Compoun...

In this study, the adsorption of thallium (III) ion from aqueous solutions onto modified ZnOnanopowder as a fairly low cost adsorbent has been investigated in batch mode. It was found thatmodification of the adsorbent was essential for obtaining the significant adsorption percentage. Theadsorbent modified by sodium phosphate solution. The effect of experimental parameters such asinitial pH of s...

The renal angiotensin angiotensin type 2 receptor has been shown to mediate natriuresis, and angiotensin III, not angiotensin II, may be the preferential angiotensin type 2 receptor activator of this response. Angiotensin III is metabolized to angiotensin IV by aminopeptidase N. The present study hypothesizes that inhibition of aminopeptidase N will augment natriuretic responses to intrarenal a...

To study the changes in electrolyte concentrations in cells of patients with congestive heart failure, we measured the sodium and potassium concentrations in erythrocytes obtained from 34 stabilized patients treated with only digoxin and not with diuretics in order to avoid the effects of miscellaneous drugs and acute water overload. Patients were divided into classes I-III according to the NYH...