ABSTRACT
Drug retention enema is a common therapy for various illnesses. However, it is impossible to keep the drug in the colon for a long time, due to the limitation of the current equipment, and it is unable to achieve the purpose of retention enema. A retention enema device was designed by the department of intensive care unit (ICU) of Dongfeng Hospital Affiliated to Hubei University of Medicine. The retention enema device adds a spindle shaped inflatable air bag on the basis of the traditional enema device, which not only fix on the anus, but also prevent the leakage of enema fluid. It can achieve retention enema, play the enema drug effect fully, and significantly reduce the nursing workload, in addition, the silica gel material of the retention enema device ensures the comfort of the patients, the decompression air bag also avoids the damage of the high pressure of the spindle fixed air bag for the patients, which is worthy of clinical use.
ABSTRACT
Drug retention enema is a common therapy for various illnesses. However, it is impossible to keep the drug in the colon for a long time, due to the limitation of the current equipment, and it is unable to achieve the purpose of retention enema. A retention enema device was designed by the department of intensive care unit (ICU) of Dongfeng Hospital Affiliated to Hubei University of Medicine. The retention enema device adds a spindle shaped inflatable air bag on the basis of the traditional enema device, which not only fix on the anus, but also prevent the leakage of enema fluid. It can achieve retention enema, play the enema drug effect fully, and significantly reduce the nursing workload, in addition, the silica gel material of the retention enema device ensures the comfort of the patients, the decompression air bag also avoids the damage of the high pressure of the spindle fixed air bag for the patients, which is worthy of clinical use.
ABSTRACT
An experimental study on flowrate and stability of a type of control valve of 600MW supercritical steam-turbine was presented by measuring instruments of static, dynamic pressure and vibration in self-designed test rig. The investigation shows that flow coefficient is 30% up more than that of the control valve of GX-1 type used widely in domestic power plants now, as small-medium lifts. If the relative lift (h/D) is less than 20%, the valve can always work steadily in all the pressure ratios. When the h/D is between 20% to 24%, big vibration of valve stem occurs if the pressure ratio is between 0.7 to 0.8. When h/D is more than 25%, relatively great vibration happens in a wide range of pressure ratios of 0.4 to 0.85.
ABSTRACT
An experimental study on flowrate and stability of a type of control valve of 600MW supercritical steam-turbine was presented by measuring instruments of static, dynamic pressure and vibration in self-designed test rig. The investigation shows that flow coefficient is 30% up more than that of the control valve of GX-1 type used widely in domestic power plants now, as small-medium lifts. If the relative lift (h/D) is less than 20%, the valve can always work steadily in all the pressure ratios. When the h/D is between 20% to 24%, big vibration of valve stem occurs if the pressure ratio is between 0.7 to 0.8. When h/D is more than 25%, relatively great vibration happens in a wide range of pressure ratios of 0.4 to 0.85.
ABSTRACT
Objective To establish a method for the in-vitro culture of astrocytes from cerebral cortex of neonatal rats.Methods Astrocytes were isolated from cerebral cortex of the neonatal SD rats aged 24 hours,and then were cultured in the high-glucose DMEM medium with 10% fetal bovine serum added.The morphological features of astrocytes were examined under inverted microscope.The growth of the third generation of astrocytes was observed with counting plate method and methyl thiazolyl tetrazolium (MTT) assay.Results The astrocytes from cerebral cortex of neonatal rats grew well,the astrocytes showed typical morphological features,and no other kinds of cells was found.Conclusion A simple and practical in-vitro culture method for rats astrocytes is established.