In this paper are reported our studies on the time and frequency characteristics of wavelet transform, the EEG signals processing through wavelet transform, the EEG analysis and reconstruction results. The related EEG processing system design and implementation are given in detail. This system may be applied to EEG feedback research and EEG monitoring.

Objective To analyze and compare the curative effect of thoracic laparoscopy combined with resection of esophageal carcinoma and conventional three incision resection of esophageal carcinoma .Methods From January 2012 to January 2016,sixty-two patients received esophageal cancer resection in Shanxi Provincial Cancer Hospital were selected in the research.The patients were divided into laparoscopic group (28 cases) and traditional group(34 cases) according to surgical methods ,and they were treaded with thoracic laparoscopy combined with resection of esophageal carcinoma and three incision resection of esophageal carcinoma ,respectively.The amount of blood loss , the number of lymph node dissection ,the postoperative 1d flow,the ventilator use of 24h and the number of tracheotomy were recorded.The time of hospitalization,the time of closed drainage and the incidence of postoperative complications were recorded and compared between the two groups at discharge time.Results The operative time,amount of blood loss,drainage volume,drainage time and hospitalization time of the laparoscopic group were (3.22 ±0.64)h,(218.20 ± 45.42)mL,(235.67 ±42.15)mL,(3.32 ±1.81)d,(14.28 ±2.53)d,respectively,which were significantly lower than those of the traditional group [(4.52 ±1.11)h,(407.42 ±50.06)mL,(321.71 ±37.82)mL,(5.16 ±1.78)d, (17.35 ±4.38)d,t＝5.764,15.438,8.465,4.020,3.448,all P＜0.05].The incidence rates of pulmonary infection and atelectasis in the laparoscopic group were 3.57% and 0.00%,respectively,which were significantly lower than those in the traditional group (23.53% and 17.65%,χ2＝4.929,5.471,all P＜0.05).The ventilator -assisted breathing rate and postoperative tracheotomy rate of the laparoscopic group were both 0.00%,which were significantly lower than those of the traditional group (23.53%and 14.71%,χ2＝7.564,4.479,all P＜0.05).Conclusion It is safe and reliable to complete lymph node dissection and surgical treatment of thoracic laparoscopy combined with resection of esophageal carcinoma,and compared with conventional three incision resection of esophageal carcinoma it has the advantages of small trauma,low incidence rate of complication and fast recovery,which is worthy of further promotion.

Objective To explore the short-term efficacy of endovascular isolation treatment for type A aortic intramural hematoma(AIH)with pericardial effusion,and to discuss the endovascular isolation treatment strategy for type A AIH with pericardial effusion.Methods A total of 12 patients with type A AIH complicated by pericardial effusion,who were admitted to the First Affiliated Hospital of Hunan University of Traditional Chinese Medicine of China between February 2018 and November 2021,were enrolled in this study.Before surgery,the intima of the ascending aorta was intact in all patients,but a rupture at the proximal intima of the aortic arch or the thoracic descending aorta was detected.All patients received endovascular isolation treatment.Among them,4 patients received endovascular isolation treatment within one week after the onset of disease,and 8 patients received selective operation after receiving conservative treatment for one week.The patients were followed up for one year.Results Among the patients who received endovascular isolation treatment within one week after the onset of disease,one patient recovered smoothly,two patients developed type A dissection within 3 months after surgery,and one died early after surgery.All the 8 patients,who received selective operation after receiving conservative treatment for one week,recovered smoothly.Conclusion For patients with type A AIH complicated by mild to moderate pericardial effusion,selective endovascular isolation treatment after receiving the conservative treatment to alleviate the ascending aortic hematoma can achieve ideal therapeutic effect.