Consider a three-dimensional system having an invariant surface. By using bifurca- tion techniques and analyzing the solutions of bifurcation equations, the authors study the spacial bifurcation phenomena of a k multi...Consider a three-dimensional system having an invariant surface. By using bifurca- tion techniques and analyzing the solutions of bifurcation equations, the authors study the spacial bifurcation phenomena of a k multiple closed orbit in the invariant surface. The su?cient conditions of the existence of many closed orbits bifurcate from the k multiple closed orbit are obtained.展开更多
Objective: To explore the characteristics of closed abdominal injury in pregnancy women and its treatment.Methods: The clinical data of 37 pregnancy patients with closed abdominal injury treated in our hospital from J...Objective: To explore the characteristics of closed abdominal injury in pregnancy women and its treatment.Methods: The clinical data of 37 pregnancy patients with closed abdominal injury treated in our hospital from June 1993 to June 2003 were collected and analyzed.Results: All the 37 patients were treated with operation. Among them 2 early pregnancy patients with intestinal rupture and 1 patient with retroperitoneal hematoma were treated under laparoscope; in other 34 pregnancy patients laparotomy was performed. Of the 34 patients 8 used cesarean section because premature separation of placenta and enlarged womb interrupted the management of intra-abdominal organ injury. In the 37 patients 33 ( 89.1%) were cured, 4 ( 10.8%) die, postoperative complication rate was 16.2% (6/37). Two patients ( 5.4%) suffered from abdominal cavity infection, 3 ( 8.1%) from pulmonary infection, and 1 ( 2.7%) had multi-organ failure.Conclusions: For pregnancy patients with closed abdominal injury, besides obsteric diseases intra-abdominal injury should be given much attention. Accurate diagnosis and timely treatment can gain the time to save the life of both mother and fetus.展开更多
基金Project supported by the Ministry of Education of China (No.20010248019, No.20020248010) and theNational Natural Science Foundation of China (No.10371072).
文摘Consider a three-dimensional system having an invariant surface. By using bifurca- tion techniques and analyzing the solutions of bifurcation equations, the authors study the spacial bifurcation phenomena of a k multiple closed orbit in the invariant surface. The su?cient conditions of the existence of many closed orbits bifurcate from the k multiple closed orbit are obtained.
文摘Objective: To explore the characteristics of closed abdominal injury in pregnancy women and its treatment.Methods: The clinical data of 37 pregnancy patients with closed abdominal injury treated in our hospital from June 1993 to June 2003 were collected and analyzed.Results: All the 37 patients were treated with operation. Among them 2 early pregnancy patients with intestinal rupture and 1 patient with retroperitoneal hematoma were treated under laparoscope; in other 34 pregnancy patients laparotomy was performed. Of the 34 patients 8 used cesarean section because premature separation of placenta and enlarged womb interrupted the management of intra-abdominal organ injury. In the 37 patients 33 ( 89.1%) were cured, 4 ( 10.8%) die, postoperative complication rate was 16.2% (6/37). Two patients ( 5.4%) suffered from abdominal cavity infection, 3 ( 8.1%) from pulmonary infection, and 1 ( 2.7%) had multi-organ failure.Conclusions: For pregnancy patients with closed abdominal injury, besides obsteric diseases intra-abdominal injury should be given much attention. Accurate diagnosis and timely treatment can gain the time to save the life of both mother and fetus.
