In order to improve the accuracy of classification with small amount of motor imagery training data on the development of brain-computer interface (BCD systems, we proposed an analyzing method to automatically select the characteristic parameters based on correlation coefficient analysis. Throughout the five sample data of dataset IV a from 2005 BCI Competition, we utilized short-time Fourier transform (STFT) and correlation coefficient calculation to reduce the number of primitive electroencephalogram dimension, then introduced feature extraction based on common spatial pattern (CSP) and classified by linear discriminant analysis (LDA). Simulation results showed that the average rate of classification accuracy could be improved by using correlation coefficient feature selection method than those without using this algorithm. Comparing with support vector machine (SVM) optimization features algorithm, the correlation coefficient analysis can lead better selection parameters to improve the accuracy of classification.
Algorithms ; Brain-Computer Interfaces ; Discriminant Analysis ; Electroencephalography ; Fourier Analysis ; Humans ; Support Vector Machine

Trastuzumab combined with chemotherapy improves overall response rate in women with HER2-overexpressing breast cancer.However,therapeutic resistance to trastuzumab typically occurs after several months of starting therapy and overall survival does not improve significantly.Studies have reported that the potential mechanisms of resistance to trastuzumab are mainly related to the signal pathway activation from receptor tyrosine protein kinases outside of the HER family and the amplification of the PI3K-AKT pathway.Novel target therapies such as tyrosine kinase inhibitors,PI3K inhibitors are approved as substitutes for the treatment of HER2-overexpressing breast cancer,but the response to each single-agent tends to be short-lived.Several large randomized adjuvant trials have showed that novel molecular targeted therapies combinations will markedly limit or eventually abrogate acquired resistance to primary trastuzumab therapy.

We observed the catabolic characterestics of in vitro prepared nonenzymatically glucosylated low density lipoprotein (glcLDL) in mouse peritoneal macrophages (M?) and human monocyte line (U_(937); and found that glcLDL did not stimulate the increase degradation of glcLDL significantly nor did the accumulation of glcLDL cholesterol in mouse peritoneal M?. However the degradation of glcLDL by U_(937) cells was positively proportional to the concentration of glcLDL. The pre-treatment of U_(937) cells with 12-O-tetradecanoylphorbol 13-acetate (TPA) increased the degradation of glcLDL and was also positively proportional to the concentration of glcLDL. The relationship between these phenomena and the accelerated developement of atherosclerosis in diabetes mellitus was discussed.

Objective To develop the severity score of pediatric hand foot and mouth disease (HFMD),guide health care providers in the early detection and intervention of critical ill cases,in order to improve the survival rate and reduce the incidence of complications and mortality.Methods Based on PCIS,the severity score of HFMD in children was designed by adding fever and nervous system damage symptoms,which was the common symptoms of severe cases.The data of the cases who admitted in April 2008 to November 2010 (group A,88 cases) was retrospectively analyzed to evaluate the validity and credibility of the score.The score were prospectively applied to all of the HFMD cases who admitted from May 2011 to October 2013(group B,118 cases),delivering corresponding treatment and care measures based on scoring result as well.At last the outcome of the two groups was compared.Results It exhibited quite good consistency between the scores and the clinical condition of patients with HFMD.The general information of two groups was not significantly different,but the survival rate,the incidence of neurological sequel and the mortality between two groups were significantly different by x2 test.Conclusions The score can objectively and accurately assess the severity of HFMD in children.Clinical application of this scoring method to assess the children with HFMD can identify critical ill cases as early as possible.Corresponding intervention delivering in time may improve the outcome.It is proved to have positive clinical value to increase the survival rate,decrease the incidence of neurological sequel and the mortality of critical ill HFMD cases,and is worthy of clinical application in pediatric department.

84 Cases were treated in the period Aug. 1989- Aug. 1994 with self-formulated Qilu Decoction with a total effective rate of 88. 10%. The difference as compared with that of western drug Propafenone was significant (P

Objective To explore the feasibility of la pa roscopic total extraperitoneal hernia repair without the use of the balloon diss ector. Methods Laparoscopic total extraperitoneal hernia repai r using no balloon dissector was completed in 10 cases of groin hernia from Nove mber 2003 to April 2004, including 7 cases of indirect inguinal hernia, 1 case o f occult indirect hernia combined with direct inguinal hernia, and 3 cases of di rect inguinal hernia (1 of which was recurrent hernia). Results All the 10 operations were successful. The mean operation time was 69.5 min, t he mean blood loss was 11 ml, the mean postoperative hospital stay was 2.1 days , and the mean duration to normal activities, 5.2 days.Complications included 1 case of disassociated inferior epigastric artery, 1 case of operation in wrong anatomic layer, and 1 case of laceration of the peritoneum, respectively. Follow -up observations for 1~6 months found no recurrence and neuropathic pain. Conclusions Laparoscopic total extraperitoneal hernia repair without the use of the balloon dissector is feasible, safe and effective.

Objective To discuss the feasibility of laparoscopic closure of the internal ring and high ligation of the hernial sac in children with indirect inguinal hernia.Methods Laparoscopic closure of the internal ring and high ligation of the hernial sac was conducted in 21 children with indirect inguinal from January 2003 to December 2004 in this hospital.A 5-mm 30? laparoscope was introduced through the umbilicus.The internal ring and the posterior crus(PC) on the side of hernia were identified.A 3-mm dissection forceps was placed on the midline between the umbilicus and pubic symphysis.At the skin projection of the internal ring on the side of hernia,a round-tip needle with 3-0 Prolene suture grasped by a regular needle holder was passed directly into the abdominal cavity to suture the posterior crus and then penetrate out of the abdomen via the roof of the internal ring through the musculoaponeurotic arch of the transversus abdominis.Then the Prolene suture was cut off,and passed by using the Endoclose device into the extraperitoneal cavity at the skin projection of the internal ring.The dissection was continued from without outward around the sac to encircle the neck and an extracorporeal high circumferential ligation of the sac was finished.Results The operation was successfully completed in all the 21 cases.The operating time was 16~50 min(mean,32.9 min),the postoperative duration in hospital was 1~2 d,and the time to normal activity,1~4 d(mean,1.4 d),respectively.No postoperative bleeding,hematoma of scrotum,or incisional infection occurred.Follow-up checkups in the 21 cases for 1~24 months(mean,15 months) showed no recurrence.Conclusions Laparoscopic closure of the internal ring and high ligation of the hernial sac is a novel,feasible,reliable and effective herniorrhaphy for the treatment of pediatric indirect inguinal hernia.

Objective To explore the value of endoscopic duodenal feeding tube placement in severe coma patients with endotracheal tube by tracheostomy. Methods 28 patients, who suffered from severe coma with endotracheal tube by tracheostomy, received endoscopic duodenal feeding tube placement. Results Endoscopic duodenal feeding tube placement in all 28 patients was successful, and complications such as tube blocking or dropping occurred only in one patient. The average time of placing duodenal feeding tube was 16 min. Conclusion Endoscopic duodenal feeding tube placement was an effective, simple,convenient and safe way to set up enteral nutrition for severe coma patients with endotracheal tube by tracheostomy.

Objective To evaluate the efficacy and safety of contact endoscopic argon plasma coagulation(APC) for treating protuberant erosive gastritis. Methods 63 patients with protuberant erosive gastritis were randomly divided into groups A and group B, which were treated with non-contact and contact APC, respectively. The efficacy and safety were compared between the two groups. Results There was no significant difference between group A and group B in the efficacy and complication frequency. The curative rates in group A and B were 96.8% and 96.9%, respectively, and only 3 patients had abdominal pain or distension 1 to 3 days after operation, and disappeared within 3 to 7 days after treatment in each group. The numbers of ineffective operation in groups A and B were 284 and 96, respectively. The duration of operation in groups A and B was 11 min and 38 sec,7 min and 22 sec, respectivley. The numbers of accidental injury in group A and B were 137 and 58 times, respectively (all P

Objective To evaluate the application of intraoperative endoscopy during the emergency exploratory laparotomy in the patients with acute massive small intestinal bleeding.Methods Twenty-six patients with acute massive small intestinal bleeding were examined by intraoperative endoscopy during the emergency exploratory laparotomy and the clinical data were analyzed.Results The hemorrhagic reasons were clarified in 25 patients(96.2%) through the application of intraoperative endoscopy.Of the 25 patients,the results showed that 2 cases were with duodenal leiomyoma,1 case duodenal Dieulafoy' disease,5 cases small bowel leiomyoma,2 cases small bowel leiomyosarcoma,2 cases ileum lymphoma,3 cases ileum ulcer,4 cases small bowel cavernous hemangioma,5 cases small bowel arteriovenous dysmorphosis and 1 case pancreaticojejunostomy cut bleeding.The average examination time was 15 min and no complications related to intraoperative endoscopy occurred in all patients.Conclusion The application of intraoperative endoscopy,which may increase the detection rate,is efficient and safe during the emergency exploratory laparotomy in the patients with acute massive small intestinal bleeding.