A commercial formulation of the insect growth regulator methoprene was applied to wheat stored in small bins either alone or in combination with controlled aeration of the bins, to lower grain temperature for insect pest management of stored wheat. Grain temperatures were monitored and modified by a computer-controlled thermocouple system that also activated the aeration system at programmed se...

A small laboratory fermentor which employs mechanical agitation for the dispersion of air introduced under pressure has previously been described by Feustel and Humfeld (1946). This fermentor has an operating capacity of 500 to 2,000 ml and has been found very useful for small-scale, yeast-culturing investigations, as well as for studies on the production of subtilin activity by Bacillus subtil...

This study investigates the effects of micro- and nano-sized SiC powder on the rheological behavior of Al based feedstocks for powder injection molding (PIM).  Different compositions of Al feedstocks with additions of micro and nano-SiC powder were prepared and their rheological properties were measured with a rotational rheometer. The effects of SiC content and shear rate were investigated and...

rheological characteristics of al2o3, cuo and tio2 nano particles were investigated in oil asthe base fluid at 1 and 2 wt.%. constitutive relations for non-newtonian fluid were discussedbased on the power-law model. measured viscosities of each nanofluid were used to evaluatethe power-law and consistency index. results indicated that the nanofluid viscosity decreasedby increasing the concentrat...

The copepod Acartia tonsa exhibits 2 different feeding modes: when feeding on small phytoplankton cells it sets up a feeding current and acts as a suspension feeder; when feeding on motile prey it acts as an ambush feeder. We examined experimentally the effects of small-scale turbulence on feeding rates in these 2 modes. The different feeding behaviours were triggered by offering the copepods d...

The rate of photorespiration of Douglas-fir seedlings was measured under different light intensities by: (1) extrapolating the curve for CO(2) uptake in relation to atmospheric CO(2) content to zero CO(2) content, and (2) measuring CO(2) evolution of the plants into a CO(2)-free airstream. Different results, obtained from these techniques, were believed to be caused by a severe restriction of t...

a periodic increase in blood pressure (bp) occurs during apneic episodes in patients with obstructive sleep apnea (osa). several factors including hypoxemia and an increase in heart rate (hr) were reported to be responsible for this increased bp. to examine the contribution of these two factors in increasing bp, 35 healthy male subjects (mean age±sd= 23.64±3.80) were studied in three experiment...

D-Amino acid oxidases (DAAOs) have an important role in several processes of interest in the fine chemical and pharmaceutical industry for drug discovery. They are used in the production of optically pure L-amino acids1 and unnatural amino acids2, and the production of 7-aminocephalosporanic acid (7-ACA)2,3 which is a precursor of antibiotics with annual demand of approximately 100 t worldwide3...

In partially flooded deep water rice (Oryza sativa L. cv Habiganj Aman II), continuous air layers trapped between the hydrophobic, corrugated surface of the leaf blades and the surrounding water constitute the major path of aeration. The conduction of gases through the internal air spaces of the leaf is negligible compared to the conduction of gases through the external air layers. The total vo...