Objective To investigate the biomechanical changes of internal maxillary distraction with fixation between cleft palate.Methods Three-dimensional FEM models of LeFort Ⅰ osteotomy and soft tissue in CLP maxillary complex were established.Two different conditions were simulated:one was the cleft palate connected by a titanium plate,and the other was the cleft retained.Internal midface distraction which applied in clinic were simulated.Fixation points of the distraction devices on the LeFort Ⅰ osteotomy complex were advanced by 10 mm in the direction of frontage.Biomechanical changes for different conditions were investigated by means of finite element analyses.Results LeFort Ⅰ osteotomy of maxillary complex area in CLP was advanced.Constrictions occurred in alveolar crest and palate,when the cleft was retained.Constriction of alveolar crest and palate was not obvious,when the cleft palate was connected by a titanium plate.There were no differences between sagittal and vertical displacement to internal distraction in LeFort Ⅰ osteotomy.Clockwise rotation occurred in vertical direction.Conclusions Internal maxillary distraction with fixation between cleft palate could avoid constriction of alveolar crest and palate.It provides the options and reference to the surgical plans.

Body-surface electrogastrogram signals can be adopted in studies of gastrodynamics characteristics and diagnoses of functional gastric diseases. Fundamental theory of denoise by wavelet introduced, wavelet transfer is applied to the denoise of body-surface electrogastrogram signals. The high-frequency noise is eliminated through wavelet, and thus the SNR and the resolution ratio of the signal are increased.

Objective To evaluate the orthodontic effect of surgery on mixed dentition period class Ⅲ malocclusion and to investigate the effective therapeutic method of the skeletal class Ⅲ malocclusion.Methods A total of 20 patients aged 8.5 to 9.1 years with early mixed dentition class Ⅲ skeletal malocclusion.The treatment was divided into two phases.During the first phase,the entire stuffy group was treated with a bonded maxillary expansion and protraction.During the second phase,the entire study group received multiple loop edgewise arch wire (MEAW) treatment until an ideal occlusion relationship achieved.Comparison of the pre-and post-orthodontic treatment cephalometric radiographs had been done after maxillary protraction and MEAW were applied for patients.Results In the 20 patients after orthodontic treatment,Class Ⅲ skeletal facial profile was improved,the retraction of anterior teeth was obvious,and there were significant changes in dentition; the profile of soft tissue and satisfactory occlusion relationship were significantly improved,as compared with the changes between pre-treatment and post-treatment.Conclusions Skeletal Ⅲ malocclusion in early mixed dentition can be successfully treated.The results can be satisfied with improved class Ⅲ skeletal and molar relationship,high-angle and profile of soft tissue.

Multivariate time series problems widely exist in production and life in the society. Anomaly detection has provided people with a lot of valuable information in financial, hydrological, meteorological fields, and the research areas of earthquake, video surveillance, medicine and others. In order to quickly and efficiently find exceptions in time sequence so that it can be presented in front of people in an intuitive way, we in this study combined the Riemannian manifold with statistical process control charts, based on sliding window, with a description of the covariance matrix as the time sequence, to achieve the multivariate time series of anomaly detection and its visualization. We made MA analog data flow and abnormal electrocardiogram data from MIT-BIH as experimental objects, and verified the anomaly detection method. The results showed that the method was reasonable and effective.
Data Interpretation, Statistical ; Electrocardiography ; Humans ; Image Interpretation, Computer-Assisted ; Pattern Recognition, Automated

Based on the field questionnaire survey in different grade undergraduates in some medical colleges , this paper summarized the main performance of network moral abnormality in medical college students , and further analyzed the internal and external causes , thus put forward the countermeasures of strengthening medical college students′network moral education: innovate moral education methods and improve the moral quality of college students;strengthen the network legal system propaganda education , enhance the students′self -discipline con-sciousness;play a role of main channel and enhance the actual effect of network moral education ;meet the require-ments for the internet age and the construct a new administrative team; strengthen the position consciousness , es-tablish network moral education platform;strengthen the guidance function , carry out various kinds of network mor-al education.

Objective To evaluate the diagnostic value of velocity parameters of Tardus-Parvus for the detection of renal artery stenosis ( RAS) ( diameter reduction ≥50%) and to determine the useful cutoffs for these parameters .Methods A study group was composed of 221 renal arteries that were detected Tardus-Parvus by color Doppler flow imaging and were referred to abdomino-aorto-re-nal arteriography afterwards .Five Doppler parameters including the peak systolic velocity ( PSV ) , end-diastolic minimum velocity (EDV), resistance index (RI), acceleration time (AT), and accelerated velocity (AC) from each location including renal aorta ( MRA) , segmental artery ( SRA) , interlobar artery ( IRA) , and arcuate artery ( ARA) were archived and compared among the differ-ent groups .Renal artery angiography showed arterial canon reduced 50% or higher RAS .Arteries were considered stenosed on renal arteriography if there was a diameter reduction of greater than 50%.Statistical analysis to determine the best parameter for predicting a RAS was performed with the receiver operating characteristic ( ROC) curves.The sensitivity, specificity, and negative and positive predicting values at various cutoffs were calculated .Results Renal artery stenosis degree was less than 50% in 16 cases, 50%~99%in 197 cases, completely occluded in 2 cases, and no stenosis in 6 case by renal arteriography .For RAS with inner diameter re-duction of 50%or more, the ROC curve analysis showed renal artery flow velocity had a good sensitivity and specificity , 50%~99%of the RAS had optimal threshold value in PSV 20 cm/s, EDV 10 cm/s, RI 0.50, AT 0.09 s, and AC 1.5 m/s2.Conclusions Tardus-Parvus had high specificity and sensitivity for diagnosis of stenosis rate in more than 50% of the RAS, low sensitivity for the narrow degree in 0~49%, and no clinical value for the renal artery occlusion .

Objective To understand perinatal health care and demand status, and explore the influence factors of perinatal health in Jinzhou area. Methods Randomly investigate 996 mothers from three hospital in Jinzhou. Results Seeking pregnancy health service demand rate: general hospital of obstetrics and gynecology accounted for 52.2%(520/996), maternity hospitals accounted for 39.5%(393/996), family planning services accounted for 8.3% (83/996). Good crowd in pregnancy cognition, > 30 65.3% (297/455), 30 years old or less accounted for 34.7% (158/455). Medical personnel in maternal knowledge acquirement accounted for 33.2% (331/996), pregnant women school training accounted for 23.9% (238/996), network way accounted for 16.2% (161/996), the relatives and friends accounted for 10.7% (107/996), books accounted for 10.8% (108/996), the other way accounted for 5.1% (51/996).The related factors of postpartum depression are marital status, antenatal education, the way of breastfeeding. Conclusions The family planning service has not fully played its efficiency. Women under t he age of 30 need to enhance conciousness about health care before pregnancy. The network platform still has space to play education function. It′s necessary that puerperal nursing routine should add postnatal depression questionnaire in the future.

Objective To evaluate CT findings of urinary obstruction caused by ureteral diseases.Methods CT findings in 157 cases with ureteral disease, proven surgically and pathologically were retrospectively reviewed.Results 27 cases of ureteral neoplasms, 12 casesof ureteritis, 10 of ureteral tuberculosis, 90 of ureteral stones, 3 of ureteral polyps, 3 of retroperitonium fibrosis and 12 cases ofretroperitonium or pelvic neoplasms involving ureter were included. Conclusion Spiral CT is of high accuracy in determining the natures and localizations of ureteral diseases.

At the 30th anniversary of the establishment of Journal of Guangzhou University of Traditional Chinese Medicine, we reviewed the development and innovation of the Journal during the 30 years, discussed the special feature of the Journal and the publishing thoughts, and put forward the development plan. By abiding to showing the characteristics of traditional Chinese medicine, keeping pace with the academic advancement, and following the editing standard strictly, the Journal has obtained the social approval and academic position for its growth from a small-scale and unknown periodical to a bimonthly, normalized and high-quality journal.

Objective To explore the correlation between the moving angle of elbow joint and surface electromyogram signal(sEMG)activities of biceps and triceps.Methods The eigenvalue of sEMG during elbow joint moving under constant load were calculated with means of root mean square(RMS)and integrated electromyogram(iEMG)in time domain.Results The experimental results showed that both the chavacteristics of RMS and iEMG for biceps differed from those of triceps.The sEMG activities of biceps increased with the increment of elbow joint angle,while those from triceps reached to the maximum values when elbow joint angle was 90?.Furthermore,the sEMG activities of triceps at the elbow angle of 45? was similar with that when elbow angle was 135?.Conclusion The sEMG from biceps and triceps can reflect the moving angle of elbow joint under constant load.