目的探讨VDW(德国)Bee Fill 2in1热牙胶垂直加压根管充填系统的护理配合。方法 200例急慢性牙髓炎及根尖周炎患者,应用VDW(德国)Bee Fill 2in1热牙胶根管充填系统进行垂直加压充填根管,对术前做好患者用物及器械、仪器准备及检查;术中...目的探讨VDW(德国)Bee Fill 2in1热牙胶垂直加压根管充填系统的护理配合。方法 200例急慢性牙髓炎及根尖周炎患者,应用VDW(德国)Bee Fill 2in1热牙胶根管充填系统进行垂直加压充填根管,对术前做好患者用物及器械、仪器准备及检查;术中协助根管预备及根管充填护理、术后做好设备保养和用物整理和患者健康指导。结果 188例X线摄片显示热牙胶根管充填均匀致密。12例中8例根管欠充、4例根管有气泡不密合,都接受再次充填后,患者治疗满意,术后无并发症。结论热牙胶根管充填比传统的侧方加压根管充填具有更好的根管封闭效果。护理人员掌握操作程序,密切有序迅速的配合医生治疗全程,提高了临床治愈率和满意度。四手操作在口腔护理配合中具有高效率、高质量的优点。展开更多
选用G.S.Soave对于Van Der Waals方程的两种修正式和H.Vidal混合模型,编写了计算单组分和混合物的热力参数和汽液平衡常数的电算程序,并对含氢系统和极性混合物进行了校核计算。结果表明,该程序对单组分、含氢系统和极性混合物的计算具...选用G.S.Soave对于Van Der Waals方程的两种修正式和H.Vidal混合模型,编写了计算单组分和混合物的热力参数和汽液平衡常数的电算程序,并对含氢系统和极性混合物进行了校核计算。结果表明,该程序对单组分、含氢系统和极性混合物的计算具有较满意的精度,能满足设计计算的需要,同样具有如同PR、GDSRK、BWSR等方法的简单、快速、输入数据较少等优点。本程序对多组分的分离计算,特别是液化石油气和液化天然气的轻烃回收系统具有实用意义。展开更多
1 INTRODUCTIONBecause of importance of equations of state (EOS)in science and industry,hundreds forms of EOS havebeen presented since latter 19th century.It seems impossible to develop a general equation covering vari...1 INTRODUCTIONBecause of importance of equations of state (EOS)in science and industry,hundreds forms of EOS havebeen presented since latter 19th century.It seems impossible to develop a general equation covering vari-ous kinds of EOS.But for cubic EOS,several generalequations have been reported already. Martin presented the first general equation whichis following p=RT/V-α(T)/(υ+β)(υ+γ)+δ(T)/υ(υ+β)(υ+γ) (1) Kumar et a1.presented an equation called the most general form of a density-cubic or, alterna tively,volume-cubic mathematical equation,the form of which is as展开更多
A new approach to the investigation ofvdW type of equations of state (EOS) is developed by embedding a vapor pressure equation and a saturated liquid volume equation into vdW type EOS, which resuits in a new function ...A new approach to the investigation ofvdW type of equations of state (EOS) is developed by embedding a vapor pressure equation and a saturated liquid volume equation into vdW type EOS, which resuits in a new function A^s(T). The A^s(T) possesses the properties of an attractive parameter A(T), and if an EOS is accurate in the whole PVT space, then its numerical wahie equal8 A(T). As a useful tool for investigating EOS, the A^s(T) has been used to make comparisons among RKS, PRSVII, PT and ALS EOS, and to indicate where the shortcomings of the EOS are coming from. Based or. the A^s(T), a possible way to develop at real predictive equation of state is also suggested.展开更多
文摘目的探讨VDW(德国)Bee Fill 2in1热牙胶垂直加压根管充填系统的护理配合。方法 200例急慢性牙髓炎及根尖周炎患者,应用VDW(德国)Bee Fill 2in1热牙胶根管充填系统进行垂直加压充填根管,对术前做好患者用物及器械、仪器准备及检查;术中协助根管预备及根管充填护理、术后做好设备保养和用物整理和患者健康指导。结果 188例X线摄片显示热牙胶根管充填均匀致密。12例中8例根管欠充、4例根管有气泡不密合,都接受再次充填后,患者治疗满意,术后无并发症。结论热牙胶根管充填比传统的侧方加压根管充填具有更好的根管封闭效果。护理人员掌握操作程序,密切有序迅速的配合医生治疗全程,提高了临床治愈率和满意度。四手操作在口腔护理配合中具有高效率、高质量的优点。
文摘选用G.S.Soave对于Van Der Waals方程的两种修正式和H.Vidal混合模型,编写了计算单组分和混合物的热力参数和汽液平衡常数的电算程序,并对含氢系统和极性混合物进行了校核计算。结果表明,该程序对单组分、含氢系统和极性混合物的计算具有较满意的精度,能满足设计计算的需要,同样具有如同PR、GDSRK、BWSR等方法的简单、快速、输入数据较少等优点。本程序对多组分的分离计算,特别是液化石油气和液化天然气的轻烃回收系统具有实用意义。
文摘1 INTRODUCTIONBecause of importance of equations of state (EOS)in science and industry,hundreds forms of EOS havebeen presented since latter 19th century.It seems impossible to develop a general equation covering vari-ous kinds of EOS.But for cubic EOS,several generalequations have been reported already. Martin presented the first general equation whichis following p=RT/V-α(T)/(υ+β)(υ+γ)+δ(T)/υ(υ+β)(υ+γ) (1) Kumar et a1.presented an equation called the most general form of a density-cubic or, alterna tively,volume-cubic mathematical equation,the form of which is as
文摘A new approach to the investigation ofvdW type of equations of state (EOS) is developed by embedding a vapor pressure equation and a saturated liquid volume equation into vdW type EOS, which resuits in a new function A^s(T). The A^s(T) possesses the properties of an attractive parameter A(T), and if an EOS is accurate in the whole PVT space, then its numerical wahie equal8 A(T). As a useful tool for investigating EOS, the A^s(T) has been used to make comparisons among RKS, PRSVII, PT and ALS EOS, and to indicate where the shortcomings of the EOS are coming from. Based or. the A^s(T), a possible way to develop at real predictive equation of state is also suggested.
