Prediction control research of cobalt lion concentration in Zinc hydrometallurgy based on NN and GM technique
Considering the strong non-linearity and large time delay of purification in zinc hydrometallurgy in purification process, a prediction model of cobalt concentration combining neural network (NN) and grey model (GM) are proposed. In the key part II of the purification, because of the harmful impurities cobalt ion concentration can not be on-line measured, and the testing results is two hours later before the production situation, it is mainly through the production of excessive addition of antimony salts and zinc to remove cobalt ions. Under the premise of deeply analysis of the process II of product and purification technique and the relevant factors, a control method was brought forward in this article, which adopts the same dimension grey prediction method to forecast cobalt ion concentration, and then uses a neural network technique to compensate the error of grey forecast. In the end of the article, two simulated experiments of the neural network grey model (NN-GM) and the least square support vector machine (LS-SVM) were compared. The results of the simulation and production practice has proved that the NN-GM model can be so better to predict the cobalt ion concentration values, that played guiding role for the operation process in optimize the antimony salt and zinc addition.
Feasibility of bone marrow stromal cells autologous transplantation for dilated cardiomyopathy
SummaryThe feasibility of bone marrow stromal cells autologous transplantation for rabbit model of dilated cardiomyopathy induced by adriamycin was studied. Twenty rabbits received 2 mg/kg of adriamycin intravenously once a week for 8 weeks (total dose, 16 mg/kg) to induce the cardiomyopathy model with the monitoring of cardiac function by transthoracic echocardiography. Marrow stromal cells were isolated from cell-transplanted group rabbits and were culture-expanded on the 8th week. On the 10th week, cells were labeled with 4,6-diamidino-2-phenylindole (DAPI), and then injected into the myocardium of the same rabbits. The results showed that viable cells labeled with DAPI could be identified in myocardium at 2nd week after transplantation. Histological findings showed the injury of the myocardium around the injection site was relieved with less apoptosis and more expression of bcl-2. The echocardiography found the improvement of local tissue movement from (2.12±0.51) cm/s to (3.81±0.47) cm/s (P<0.05) around the inject site, but no improvement of heart function as whole. It was concluded bone marrow stromal cells transplantation for dilated cardiomyopathy was feasibe. The management of cells in vitro, the quantity and the pattern of the cells transplantation and the action mechanism still need further research.
Just Wars: From Cicero to Iraq
Preface and Acknowledgements. Introduction -. PART I: MAPPING THE JUST WAR TRADITION. Chapter 1: Antiquity -. Chapter 2: The Middle Ages -. Chapter 3: Renaissance and Reformation -. Chapter 4: From Holy War to Enlightenment -. Chapter 5: Modernity and Beyond -. PART II: CONTEMPORARY ISSUES. Chapter 6: The Just War Tradition Today -. Chapter 7: Terrorism -. Chapter 8: Pre-emption -. Chapter 9: Aerial Bombing -. Chapter 10: Humanitarian Intervention -. Conclusion. Bibliography -. Index