Mechanical ventilation in patients with bronchopleural fistula after lung resection is a major problem, as it causes increase of the air-leak, complicates the healing process and makes residual lung tissue ventilation difficult. We present two cases in which the use of a modified double lumen endobronchial tube improved ventilation and eliminated the fistula air-leak. We used a right-sided doub...

We evaluated a previously modified double-antibody radioimmunoassay for serum cortisol. It was compared with the conventional double-antibody method that includes the usual extraction step, and also with an antibody-coated tube method. In this modified method, cortisol was released from its binding globulin by enzymatic degradation rather than by extraction with ether, and a preincubated mixtur...

In flowering plants, double fertilization is normally accomplished by the first pollen tube, with the fertilized ovule subsequently inhibiting the attraction of a second pollen tube. However, the mechanism of second-pollen-tube avoidance remains unknown. We discovered that failure to fertilize either the egg cell or the central cell compromised second-pollen-tube avoidance in Arabidopsis thalia...

numerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. polar system has beenselected as coordinate system. as a result, all equations have been discredited in r and θdirections. brinkmann extended darcy model has been utilized to express fluid flow inporous matrix in the enclosure. smaller and...

.hot metal gas forming of tubes can be used in various industries such as automotive and aerospace industries. in this process tube is formed at elevated temperatures, by using gas instead of fluid pressure. lower required pressure and low power are its advantages in comparison to hydroforming process. in this paper, a hot metal gas bulging process of an aluminum alloy tube has been investigate...

The effect of the design on heat transfer is numerically investigated by using wavy inner tube in a double-pipe exchanger. A was used to give turbulent fluid along double In numerical study, ANSYS 12.0 Fluent code program used, and basic protection equations were solved for steady-state, 3-D flow conditions. study examined at Reynolds numbers ranging from 2700-5300. obtained results compared wi...