Based on the droplet-diffusion model by Kirillov and Smogalev (1969, 1972), a new analytical model of dryout point prediction in the steam-water flow for bilaterally and uniformly heated narrow annular gap was devel- ...Based on the droplet-diffusion model by Kirillov and Smogalev (1969, 1972), a new analytical model of dryout point prediction in the steam-water flow for bilaterally and uniformly heated narrow annular gap was devel- oped. Comparisons of the present model predictions with experimental results indicated that a good agreement in ac- curacy for the experimental parametric range (pressure from 0.8 to 3.5 MPa, mass flux of 60.39 to 135.6 kg?m-2?s-1 and heat flux of 5 to 50 kW?m-2). Prediction of dryout point was experimentally investigated with deionized water upflowing through narrow annular channel with 1.0 mm and 1.5 mm gap heated by AC power supply.展开更多
Objective To investigate whether the osteocyte apoptosis exists in orbital bones and to discuss its effect on the orbital development. Methods Seven young Newzealand white rabbits were selected as experimental animals...Objective To investigate whether the osteocyte apoptosis exists in orbital bones and to discuss its effect on the orbital development. Methods Seven young Newzealand white rabbits were selected as experimental animals.At two-month-old ,all rabbits were killed and then zygomas were made into paraffin and electron microscope sections after they were decalcified. Apoptosis of osteocytes was observed by light microscope and transmission electron microscopes and detected by TUNEL staining. Results The classical apoptosis of osteocytes was found under light and transmission electron microscopes. Apoptosis of osteocytes was diffused irregularly in the zygomatic tissue. Conclusion Osteocyte can apoptosis and it may participate in the development of the bony orbit.展开更多
文摘Based on the droplet-diffusion model by Kirillov and Smogalev (1969, 1972), a new analytical model of dryout point prediction in the steam-water flow for bilaterally and uniformly heated narrow annular gap was devel- oped. Comparisons of the present model predictions with experimental results indicated that a good agreement in ac- curacy for the experimental parametric range (pressure from 0.8 to 3.5 MPa, mass flux of 60.39 to 135.6 kg?m-2?s-1 and heat flux of 5 to 50 kW?m-2). Prediction of dryout point was experimentally investigated with deionized water upflowing through narrow annular channel with 1.0 mm and 1.5 mm gap heated by AC power supply.
文摘Objective To investigate whether the osteocyte apoptosis exists in orbital bones and to discuss its effect on the orbital development. Methods Seven young Newzealand white rabbits were selected as experimental animals.At two-month-old ,all rabbits were killed and then zygomas were made into paraffin and electron microscope sections after they were decalcified. Apoptosis of osteocytes was observed by light microscope and transmission electron microscopes and detected by TUNEL staining. Results The classical apoptosis of osteocytes was found under light and transmission electron microscopes. Apoptosis of osteocytes was diffused irregularly in the zygomatic tissue. Conclusion Osteocyte can apoptosis and it may participate in the development of the bony orbit.
