Different chemicals were used to study the effect of pretreatment of Mucor rouxii biomass on bioadsorption of Pb, Cd, Ni and Zn. Pretreatment with detergent and alkali chemicals such as NaOH, Na 2 CO 3 and NaHCO 3 were found to improve or maintain the bioadsorption capacity in comparison with live M. rouxii biomass. Acid pretreatment using HCl, H 2 SO 4 and C 2 H 4 O 2 resulted in a significant...

Ameliorative effect of exogenously applied glycinebetaine (GB) on photosynthetic capacity of two wheat cultivars differing in salt tolerance grown under salt stress was assessed. Plants were grown under field conditions at 2.84, 15 dS/m in split-split plot design. Different levels of GB (no spray NS, 0.1% Tween 20 solution, 50 and 100 mM GB in 0.1% Tween 20 solution) were exogenously applied as...

The possibility that a loss of pollen viability during dry storage in a freezer is caused by the reduced pollen capacity to enhance polyamine biosynthetic enzyme activity after rehydration was investigated using pollen grains of tomato (Solanum lycopersicum=Lycopersicon esculentum) stored at -30 degrees C under dry conditions for up to 42 months. Pollen grains showed normal germinability for at...

A progressive inability of the cardiorespiratory system to maintain systemic oxygen supply at elevated temperatures has been suggested to reduce aerobic scope and the upper thermal limit of aquatic ectotherms. However, few studies have directly investigated the dependence of thermal limits on oxygen transport capacity. By manipulating oxygen availability (via environmental hyperoxia) and blood ...

Reduction of exercise capacity in patients with ankylosing spondylitis is associated with skeletal muscle performance. The contribution of respiratory muscle performance is questionable. This pilot study was designed to investigate the relationship between respiratory muscle performance and exercise capacity in ankylosing spondylitis. Subjects were 12 patients with ankylosing spondylitis. Measu...

The seasonal variation and depth distribution of the capacity for denitrification and dissimilatory NO(3) reduction to NH(4) (NO(3) ammonification) were studied in the upper 4 cm of the sediment of Norsminde Fjord estuary, Denmark. A combination of C(2)H(2) inhibition and N isotope techniques was used in intact sediment cores in short-term incubations (maximum, 4 h). The denitrification capacit...