提出了一种利用PCAuto组态软件和Matlab开发中央空调自动控制系统仿真软件的方法,并介绍了其实现过程。仿真界面由PCAuto实现,模型计算用Matlab完成,SQL SERVER 2000作为PCAuto和Matlab的通信桥梁,解决了DDE通信中数据交互量小,且多用...提出了一种利用PCAuto组态软件和Matlab开发中央空调自动控制系统仿真软件的方法,并介绍了其实现过程。仿真界面由PCAuto实现,模型计算用Matlab完成,SQL SERVER 2000作为PCAuto和Matlab的通信桥梁,解决了DDE通信中数据交互量小,且多用户冲突不易解决的矛盾,实现了基于B/S和C/S双重结构的虚拟网络实验系统。展开更多
Objective: the effect of preservation time and temperature of whole blood samples on the results of blood routine test. Methods: In this study, the experiment was carried out from December 2018 to December 2019. In ou...Objective: the effect of preservation time and temperature of whole blood samples on the results of blood routine test. Methods: In this study, the experiment was carried out from December 2018 to December 2019. In our hospital, 60 cases of healthy subjects were randomly selected as study samples for the experiment. Three blood samples were taken from the patients and stored at different temperatures (4 C 25 C 32 C) for 4 hours, 12 hours and 24 hours. The effects of different temperature and preservation time on blood routine test results were compared. Result: after four hours of storage, distribution density of red blood cells was higher than that of the reference group at 25°C 、32°C. Differences between groups were significant (P<0.05). After 12 hours of storage, hemoglobin concentration were lower than those in the reference group at 25°C, P value <0.05. After 24 hours of storage, hematocrit was higher than in the reference group at 25°C. Differences between groups were significant (P<0.05). Conclusion: The different preservation time and temperature of whole blood samples will affect the experimental results. To improve the accuracy of the experiment, all tests should be completed within two hours of blood collection.展开更多
文摘提出了一种利用PCAuto组态软件和Matlab开发中央空调自动控制系统仿真软件的方法,并介绍了其实现过程。仿真界面由PCAuto实现,模型计算用Matlab完成,SQL SERVER 2000作为PCAuto和Matlab的通信桥梁,解决了DDE通信中数据交互量小,且多用户冲突不易解决的矛盾,实现了基于B/S和C/S双重结构的虚拟网络实验系统。
文摘Objective: the effect of preservation time and temperature of whole blood samples on the results of blood routine test. Methods: In this study, the experiment was carried out from December 2018 to December 2019. In our hospital, 60 cases of healthy subjects were randomly selected as study samples for the experiment. Three blood samples were taken from the patients and stored at different temperatures (4 C 25 C 32 C) for 4 hours, 12 hours and 24 hours. The effects of different temperature and preservation time on blood routine test results were compared. Result: after four hours of storage, distribution density of red blood cells was higher than that of the reference group at 25°C 、32°C. Differences between groups were significant (P<0.05). After 12 hours of storage, hemoglobin concentration were lower than those in the reference group at 25°C, P value <0.05. After 24 hours of storage, hematocrit was higher than in the reference group at 25°C. Differences between groups were significant (P<0.05). Conclusion: The different preservation time and temperature of whole blood samples will affect the experimental results. To improve the accuracy of the experiment, all tests should be completed within two hours of blood collection.
