The study was designed to investigate the effect of rifampicin on the kidney biomarkers and histopathology of kidney of albino rats. 42 albino rats were used and rifampicin was administered at 1.10mg/120gBW and 0.55mg/120gBW for intervals of 20, 40 and 60days.Animals were sacrificed 24 hours after the last day of administration and blood samples were collected for the estimation of urea and cre...

Stability relations of malachite and azurite are calculated and shown in Eh-pH diagrams, using AF (Gibbs free energy) values listed in Garrels and Christ (1965). The malachite/azurite transition is very sensitive to small chemical changes in the environment: equilibrium is reached at Pco2 = 10-a4s atm., i.e. close to normal values, whereas the precipitation of both minerals from cupric-ion-bear...

The use of ammonia (NH3) rich wastewaters as an ecological chemical absorption solvent for the selective extraction of carbon dioxide (CO2) during biogas upgrading to 'biomethane' has been studied. Aqueous ammonia absorbents of up to 10,000 gNH3 m(-3) demonstrated CO2 absorption rates higher than recorded in the literature for packed columns using 20,000-80,000 g NH3 m(-3) which can be ascribed...

This study was designed to determine the effect of acute hyperventilation on distal nephron hydrogen ion secretion. The blood PCO2 declined and stabilized rapidly when bicarbonate loaded rats were hyperventilated. In contrast, the urine PCO2 declined slowly, resulting in an early increase in the urine minus blood (U-B) PCO2 which could not be obliterated by carbonic anhydrase infusion. Within a...

Many salinity gradient energy technologies such as reverse electrodialysis (RED) rely on highly selective anion transport through polymeric anion exchange membranes. While there is considerable interest in using thermolytic solutions such as ammonium bicarbonate (AmB) in RED processes for closed-loop conversion of heat energy to electricity, little is known about membrane performance in this el...

Isolated cat lungs perfused at constant flow (75 ml/min per kg total body weight) were ventilated with gases of varying CO2 content (0 to 10%), 20% O2, and the balance N2. Tidal volume was constant, and airway pressure did not change. Left atrial pressure was held constant, and changes in pulmonary artery pressure (PPA) were taken to reflect changes in pulmonary vascular resistance. Progressive...

The human esophagus is lined by stratified squamous epithelium (ESSE), and in some subjects with reflux disease the distal esophagus becomes lined by Barrett's specialized columnar epithelium (BSCE). ESSE and BSCE differ both histologically and functionally, the latter evident by differences in their in vivo transmural electrical potential difference (PD), ESSE averaging -15 mV and BSCE being g...

Histamine is present in high concentrations in the intestine and we investigated the possibility that it might have a role here in intestinal transport. When added to the basal side of rabbit ileal mucosa in vitro histamine (10(-4)M) induced a short-lived increase in electrical potential difference and short circuit current. It inhibited net chloride absorption but did not influence sodium tran...

I N T R O D U C T I O N Action potential repolarization in hear t cells results f rom the complex interaction o f a large n u m b e r o f ionic events. The extent to which these events are influenced or otherwise modula ted by the acid-base state of the extracellular fluid remains largely a matter of conjecture. The present study was under taken to determine the individual actions o f hyd rogen...