Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operat...Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operating conditions on holdup and characteristic velocity were studied.By using the methodof dimensional analysis,the authors obtained two experimental correlations for estimating holdup and characteristic velocity respectively.Drop size distribution was studied photographically.The experimental results showedthat drop size distribuiion could be described by upper-limit log-normal distribution.展开更多
This paper presents an experimental study on the axial and radial distributions of heat transfer coefficients in a fastfluidized bed operated at ambient temperature.The following formula is recommended to correlate th...This paper presents an experimental study on the axial and radial distributions of heat transfer coefficients in a fastfluidized bed operated at ambient temperature.The following formula is recommended to correlate the local heat transfer coefficients in fast fluidized beds:where a,n<sub>1</sub> and n<sub>2</sub> are functions of radial positions.展开更多
Ⅰ. INTRODUCTION Aerosol, an important atmospheric component, exists in the whole atmosphere. The vertical sounding of atmospheric aerosol from the troposphere to the stratosphere
Interaction between two phases exists whether in reversed phase thin-layer chromatography or normal phase thin-layer chromatography. But the strength of interaction between the two phases is different when chromatogra...Interaction between two phases exists whether in reversed phase thin-layer chromatography or normal phase thin-layer chromatography. But the strength of interaction between the two phases is different when chromatographic systems are changed. When the strength of interaction between the two phases is too small to展开更多
Objective:To evaluate the factors predicting fatigue among patients undergoing hemodialysis(HD).Fatigue is a common health problem in patients receiving HD.Understanding the factors that predict fatigue is crucial for...Objective:To evaluate the factors predicting fatigue among patients undergoing hemodialysis(HD).Fatigue is a common health problem in patients receiving HD.Understanding the factors that predict fatigue is crucial for helping patients to manage their weariness.Methods:A descriptive design was utilized with a convenient sample of 200 subjects who were on HD therapy at the Mansoura University Hospital and Mansoura International Hospital in Mansoura,Egypt,for at least 3 months.Four tools were utilized in collecting data.Results:The study subjects had a moderate level of fatigue regarding all sub-dimensions of the Piper Fatigue Scale(PFS).Among the total subjects,78.5%suffered from anxiety,and 31.0%had depression.A positive correlation was found between fatigue and anxiety,depression,and overall symptoms of distress,while a negative correlation was found between perception of the ability to manage symptoms and fatigue.The factors predicting fatigue included anxiety(β=0.274,P<0.001),depression(β=305,P<0.001),and the overall symptoms of distress(β=0.248,P<0.001),while the perceived ability to manage symptoms did not predicted.Conclusions:Fatigue was ranked as the top distressing symptom among HD patients,with psychological factors such as anxiety,depression,and the overall symptoms of distress predicting fatigue.Regular screenings of these factors and psychological therapies to modulate them might decrease fatigue severity and its related disability in HD clients.Multidimensional nurse-led interventions involving physical and psychological therapies are required to manage fatigue in HD patients.展开更多
Beginning next month, 14 excellent historic sites in the Hongkou District will bear “anti-theft name boards”on their outside walls, district officials announced yesterday.
文摘Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operating conditions on holdup and characteristic velocity were studied.By using the methodof dimensional analysis,the authors obtained two experimental correlations for estimating holdup and characteristic velocity respectively.Drop size distribution was studied photographically.The experimental results showedthat drop size distribuiion could be described by upper-limit log-normal distribution.
文摘This paper presents an experimental study on the axial and radial distributions of heat transfer coefficients in a fastfluidized bed operated at ambient temperature.The following formula is recommended to correlate the local heat transfer coefficients in fast fluidized beds:where a,n<sub>1</sub> and n<sub>2</sub> are functions of radial positions.
文摘Ⅰ. INTRODUCTION Aerosol, an important atmospheric component, exists in the whole atmosphere. The vertical sounding of atmospheric aerosol from the troposphere to the stratosphere
文摘Interaction between two phases exists whether in reversed phase thin-layer chromatography or normal phase thin-layer chromatography. But the strength of interaction between the two phases is different when chromatographic systems are changed. When the strength of interaction between the two phases is too small to
文摘Objective:To evaluate the factors predicting fatigue among patients undergoing hemodialysis(HD).Fatigue is a common health problem in patients receiving HD.Understanding the factors that predict fatigue is crucial for helping patients to manage their weariness.Methods:A descriptive design was utilized with a convenient sample of 200 subjects who were on HD therapy at the Mansoura University Hospital and Mansoura International Hospital in Mansoura,Egypt,for at least 3 months.Four tools were utilized in collecting data.Results:The study subjects had a moderate level of fatigue regarding all sub-dimensions of the Piper Fatigue Scale(PFS).Among the total subjects,78.5%suffered from anxiety,and 31.0%had depression.A positive correlation was found between fatigue and anxiety,depression,and overall symptoms of distress,while a negative correlation was found between perception of the ability to manage symptoms and fatigue.The factors predicting fatigue included anxiety(β=0.274,P<0.001),depression(β=305,P<0.001),and the overall symptoms of distress(β=0.248,P<0.001),while the perceived ability to manage symptoms did not predicted.Conclusions:Fatigue was ranked as the top distressing symptom among HD patients,with psychological factors such as anxiety,depression,and the overall symptoms of distress predicting fatigue.Regular screenings of these factors and psychological therapies to modulate them might decrease fatigue severity and its related disability in HD clients.Multidimensional nurse-led interventions involving physical and psychological therapies are required to manage fatigue in HD patients.
文摘Beginning next month, 14 excellent historic sites in the Hongkou District will bear “anti-theft name boards”on their outside walls, district officials announced yesterday.
