Objective To analyze multislice CT characteristics of intestinal obstruction transition zone caused by different patholo-gy.Methods 67 cases of intestinal obstruction were collected in our hospital.Multislice spiral CT scan combined with multi-plane re-organization (MPR)of the bowl obstruction transitional zone were analysed.Results Among 67 cases of intestinal obstruction,there were 28 cases of simple mechanical intestinal obstruction,1 7 cases adhesion intestinal obstruction,5 cases paralytic intestinal obstruc-tion,4 cases internal hernias and 4 cases mixed intestinal obstruction.Conclusion Intestinal canal transitional zone and arounding tis-sues of intestinal obstruction have certain characteristics for the same pathology which can be clearly displayed by multislice CT scan combined with MPR.

A paper similarity network was constructed in light of semantic similarity algorithm using the complex network processing package , igraph in R language , and analyzed by random walk-trap algorithm , label propagation algorithm, BGII algorithm, and Girvan-Newman algorithm, respectively.The accuracy and stability of these 4 al-gorithms were compared according to the golden standards and the D function for network community classification evaluation index, which showed that the accuracy and stability of random walk-trap algorithm were better than those of the other 3 algorithms and preconditioning of complex network was an important influencing factor for clustering .

Child ; Humans ; Laryngostenosis ; diagnosis ; therapy ; Tracheal Stenosis ; diagnosis ; therapy

Esophageal Diseases ; Humans ; Medicine ; Tracheal Diseases

Central Nervous System Diseases ; complications ; Humans ; Pulmonary Edema ; etiology

Objective To explore the methodology of choosing the volume and shape of the mammary implant.Methods The changes of the volume and shape were analyzed in 502 cases of breast augmentation,to find out how to select the volume and shape of the mammary implant.Results The thoracic width H was the most important factor of choosing width of the implant; the SN was the important factor of choosing the height of the anatomic implant; After setting the diameter and height of the implant,a bigger breast could be achieved by increasing the projection of implants.For those very thin females with flat chest, anatomic implants were the better choice. Conclusions Thoracic width,breast volume and other data are the most important factors in choosing the mammary implant.Round and anatomic mammary implants have their specific indications.

Objective To investigate calcification of cultured aortic medial cells in vitro and acceleration by 25 hydroxycholesterol or ? glycerophosphate. Methods Aortic medial cells were obtained by explantation, and the calcification was observed by von Kossa staining. Insoluble calcium precipitation in cellular layer was determined by biochemical method , and osteocalcin in the media was analyzed with radioimmunoassay. Results Two different types of primary cells were shown from culture: one with parallel cellular growth and being negative by von Kossa staining, the other cell type formed cellular nodules with positive von Kossa staining. After 28 days of cell passages, cell growth appeared no nodule formation. However, many cellular nodules and positive von Kossa staining were observed in the passaged cells treated with 25 hydroxycholesterol or ? glycerophosphate, and both insoluble calcium 〔(57 80?18 50)?g/pool, (67 50?15 30)?g/pool〕and osteocalcin 〔(0 886?0 063)?g/L, (0 895?0 061)?g/L〕in the medium were significantly increased than that of the untreated cells. Conclusions Cultured aortic medial cells could be divided into two subtypes, one with the characters of smooth muscle cells, the other with the micro vascular pericytes which could calcify the extracellular matrix. 25 hydroxycholesterol and ? glycerophosphate promoted the in vitro calcification, and osteocalcin secretion was increased in the process of calcification of aortic medial, suggesting that osteocalcin might participate in the aortic calcification.

Objective To establish a method for rapid determination of nitrate in air. Methods Nitrate in air was absorbed using Na2CO3-NaHCO3 solution and the content of nitrate in the absorption liquid was determined by ion chromatography. Results The detection limit of NO3- was 0.008 mg/m3 when the sampling volume of air was 100 L. The linear correlation coefficient was 0.999 6. The relative standard deviation of the method was less than 5% and the recovery rates was 92.0%-96.7%. Conclusion The method had good selectivity and was simple and rapid for the determination of nitrate in air.

Objective To analyze the volatile composition in the leaves of Sabina chinensis L. Ant. and Sabina chinensis L. Ant. cv. Kaizuca and to study their effects on bacteria. Methods GC-MS was employed in the analysis of volatile composition and four kinds of bacteria were used for testing the sterilization and bacteriostasis of the volatile oil. Results The main substance in volatile oil from the two kinds of plants, Sabina chinensis L. Ant. and Sabina chinensis L. Ant. cv. Kaizuca, was bornyl acetate and the percentage was 38.1% and 46.5% respectively. In addition, in the volatile oil from Sabina chinensis L. Ant. contained 24% of phellandrne and 12.4% of p-menth-l-en-4-o1, as for Sabina chinensis L. Ant. cv. Kaizuca, 30.0% of limonene and 7.9% of ?-pinene were contained. The volatile oil from Sabina chinensis L. Ant. had greater effects of bacteriostasis and sterilization on Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli compared with Sabina chinensis L. Ant. cv. Kaizuca. Conclusion Compared with Sabina chinensis L. Ant. cv. Kaizuca, the effects of sterilization and bacteriostasis of volatile oil from Sabina chinensis L. Ant. are much greater and with a larger spectrum of bacteria.

[Objective]To evaluate a preliminary outcome of volar surgical treatment of dorsally displaced fractures of distal radius with open reduction and internal fixation with T shape locking compression plate(TLCP).[Method]From Sept.2003 to Nov.2005,9 cases with dorsally unstable distal radius fractures were treated with open reduction and internal fixation with T-LCP.This study involved 3 males and 6 femals with an average age of 63.5 years(ranged from 52 to 74 years old).According to AO classification: 2 cases of types B2;1 case of type B3;2 cases of type C1;3 cases of type C2;1 case of type C3,all of them were closed fractures of distal radius.The fractures of 9 cases were fixated with T-LCP by volar approach and dorsal soft tissues were not dissected during the operation.The Osteosets and the artificial bone substitute were implanted into bone defects if they were large enough.[Result]Nine cases were followed up for 6 to 17 months and the average time was 10.7 months.The X-ray pictures showed that unions have been achieved in all patients and a mean healing time was 7 weeks.The Osteosets were implanted into large bone defects in one case.No complication was found as infection,non-union,loosing of nails,syndrome of wrist,and medium neuritis.The functional recovery was achieved from 6 to 29 weeks with an average time of 12.5 weeks after operation.Passive wrist motion,active finger motion and forearm rotation were encouraged immediately after surgery.Active wrist motion was suggested in 7 days postoperatively.The clinical outcomes were evaluated according to modified Mcbide grading system.There were 7 excellent,1 good and 1 fair,the satisfactory rate was 88.9%.[Conclusion]The volar fixation of T-LCP for dorsally displaced fractures of distal radius has a good clinical outcome.It allows the patients to begin early exercise.