An experimental study on flowrate and stability for 600MW supercritical steam-turbine control valve / 药物分析学报

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.

Analysis of Drugs Used in OPD of Obstetrics and Gynecology Hospital / 中国药房

OBJECTIVE:To promote the work and socialization of out-patient pharmacy in special hospital.METHODS:Using the methods of order of sum of money and frequency analysis,consumption structure and sale sum of drugs and frequency of drugs used in this hospital in 1999～2000 were analyzed.RESULTS:Anti-infectives,drugs for special clinic and hormonal preparations were the commonly-used drugs,which indicated that most patients suffered from external genital organ infections The consumption of hormonal preparations increased obviously,which implied that the popularization of hormone replacement therapy and gradual maturity of subsidiary fertility technicology in this hospital.CONCLUSION:The analysis shows the characteristics of drug-use in obstetrics and gynecology hospital.

Responsiveness of the T-lymphocyte in peripheral blood from asthmatic patients to VIP / 中国病理生理杂志

0.05). VIP, however, could inhibit the Con A-induced proliferation of T-cells from control subjects more significantly than that from asthmatics (P0.05). The cAMP level in T-cells, however, increased more significantly in the control group than that in the asthmatic group after the treatment of VIP or NaF (P0.05). CONCLUSION: Inhibition effect of VIP on Con A-induced proliferation of T-cells was less in asthmatics than in control subjects, which may be related to insufficiency of Gs ? coupled VIP receptor on T-lymphocytes in asthmatics.