Helium ion irradiation at 350℃was performed to study equilibrium segregation and radiation-induced segregation(RIS)of Cr at grain boundaries in reduced activation ferritic/martensitic steels.Cr concentration at grain...Helium ion irradiation at 350℃was performed to study equilibrium segregation and radiation-induced segregation(RIS)of Cr at grain boundaries in reduced activation ferritic/martensitic steels.Cr concentration at grain boundary was measured by scanning transmission electron microscopy with an energy-dispersive spectrometer.The measured Cr concentration at grain boundaries in heat treated zone was 11.7 and 12.8 wt.%in irradiated zone,respectively,which matched well to the calculated results from Mclean and modified Perk model.Equilibrium segregation and RIS of Cr mechanisms were theoretically analysed.The analysis indicates that as temperature rises,equilibrium Cr segregation decreases monotoni-cally,while RIS of Cr has a bell-shape profile,which increases first and then decreases.It is also shown that at low and high temperatures,equilibrium segregation of Cr is higher than that of RIS;at intermediate temperatures,equilibrium Cr segregation is lower than RIS.展开更多
Purpose： The aim of this paper is to measure the success of HISs （hospital information systems） in Bahrain from their end user’s perspectives. Methodology： a quantitative design using a questionnaire based on...Purpose： The aim of this paper is to measure the success of HISs （hospital information systems） in Bahrain from their end user’s perspectives. Methodology： a quantitative design using a questionnaire based on the DeLone and McLean Information System Success Model （2003） was employed to examine the key determinants comprise of SQ （system quality）, IQ （information quality）, SerQ （service quality） as the independent variables and their effect on the US （user satisfaction）, U （system use） and the perceived NB （net benefits） as the success measures. There are 324 respondents consisting of doctors, nurses, technicians, pharmacists and admin staff of hospitals. Data were analyzed using SPSS. Findings： SQ, IQ and SerQ are significantly positively related to US and U, and the two later are in turns significantly positively related to the perceived NB out of the system to both users and organizations. Research implications： the research reflects the experience of using innovative healthcare technologies in the Middle East and its results show the importance of improving the systems technical quality to ensure more satisfied users, more utilized technologies and to reach the optimal purpose of implementing these systems and reap out their prospected benefits. Moreover, sufficient training and full dependency on the systems are required to get more confident users and reduce the daily work load.展开更多
文摘Helium ion irradiation at 350℃was performed to study equilibrium segregation and radiation-induced segregation(RIS)of Cr at grain boundaries in reduced activation ferritic/martensitic steels.Cr concentration at grain boundary was measured by scanning transmission electron microscopy with an energy-dispersive spectrometer.The measured Cr concentration at grain boundaries in heat treated zone was 11.7 and 12.8 wt.%in irradiated zone,respectively,which matched well to the calculated results from Mclean and modified Perk model.Equilibrium segregation and RIS of Cr mechanisms were theoretically analysed.The analysis indicates that as temperature rises,equilibrium Cr segregation decreases monotoni-cally,while RIS of Cr has a bell-shape profile,which increases first and then decreases.It is also shown that at low and high temperatures,equilibrium segregation of Cr is higher than that of RIS;at intermediate temperatures,equilibrium Cr segregation is lower than RIS.
文摘Purpose： The aim of this paper is to measure the success of HISs （hospital information systems） in Bahrain from their end user’s perspectives. Methodology： a quantitative design using a questionnaire based on the DeLone and McLean Information System Success Model （2003） was employed to examine the key determinants comprise of SQ （system quality）, IQ （information quality）, SerQ （service quality） as the independent variables and their effect on the US （user satisfaction）, U （system use） and the perceived NB （net benefits） as the success measures. There are 324 respondents consisting of doctors, nurses, technicians, pharmacists and admin staff of hospitals. Data were analyzed using SPSS. Findings： SQ, IQ and SerQ are significantly positively related to US and U, and the two later are in turns significantly positively related to the perceived NB out of the system to both users and organizations. Research implications： the research reflects the experience of using innovative healthcare technologies in the Middle East and its results show the importance of improving the systems technical quality to ensure more satisfied users, more utilized technologies and to reach the optimal purpose of implementing these systems and reap out their prospected benefits. Moreover, sufficient training and full dependency on the systems are required to get more confident users and reduce the daily work load.
