Objective To study the characteristic cluster structure of good-quality natural drinking water.Methods The coupling 17 O NMR(nuclear magnetic resonance)FWHM(full width half maximum)was selected as the index to weigh the rel-ative average size of water cluster in liquid water.The 17 O NMR FWHM of water samples(nature water and artificial water)were measured by ARX400NMR spectroscopy.Results 17 O NMR FWHMs of21representative water samples were in the range of53-145Hz.Conclusion 17 O NMR FWHM of good-quality natural drinking water mainly lay from70to90Hz.

Objective To evaluate transoropharyngeal atlantoaxial reduction plate system (TARP) and its preliminary clinical effect. Methods The TARP system was designed to consist of a butterfly titanium alloy plate, self-locking screws, atlantoaxial reductor and other surgical instruments. The system was applied clinically to five irreducible atlantoaxial dislocations as a result of injury or congenital disorders. During the operation, the reduction was achieved through the combination of the plate and the atlantoaxial reductor after the transoropharyngeal brisement and decompression. Bone graft was implanted between the lateral atlantoaxial joints. Results The reduction mechanism of the TARP system was well designed. Its clinical application to five cases of irreducible atlantoaxial dislocation proved that TARP had the function of instant reduction and that the operation was feasible and had laudable effect. Conclusion TARP design is a novel strategy. Its operative procedure is simple and feasible. Both the instant reduction and stable fixation can be obtained during the operation. TARP is creative and has excellent prospect.

Objective　To observe the curative effect of adult ischemic necrosis of femoral head by intramedullary decompression and arterial pulse pressor infusion.Methods　82 patients with ischemic necrosis of femoral head were treated in the combined treatment of percutaneous intramedully decompression and pulse pressor five medicine combined infusion in target vessels using ZC-Ⅰ-discome.Results　By follow-up for 12～48 months,the painful in hip joint was alleviated and joint movement was also improved.The regenerative vessels and bone in femoral head and neek were obvious.Conclusion　This therapcutic methods is safe and superior to single interventional medicine treatment for ischemic necrosis of femoral head.

The theoretical basis, significance and feasibility of tutor system for undergraduates in medical informa-tion education were studied.It was considered that the tutor system for undergraduates is an effective means for training medical information talents as it can help the undergraduates to know what role they will play in itheir future po-sition and the professional knowledge they should master, ncrease their study interests and stimulate their study motives by providing the professional skill education service in an order form.The management model of tutor system for under-graduates was put forward according to the significant features of undergraduate course education and cross subjects, the various requirements of professional skills, and the low study motives in domestic medical information education.The problems to which attention should be paid in implementing the tutor system for undergraduates were elaborated .

Lack of teachers' participating enthusiasm is the main problem that the institutions of teaching and faculty development face during the promoting process of faculty development projects. In this study, service marketing triangle theory was applied to the project promotion of the institutions of teaching and faculty development, the service marketing triangle theory for the project promotion of the center for teaching and faculty development was established. Through the three aspects of outside marketing, internal marketing and interaction marketing, the promotion strategies of faculty development projects were proposed. The application of these strategies in promoting the faculty development projects will enhance the teachers' initiative and enthusiasm to participate in service projects, so as to push faculty development.

Objective To determine the relationship between excess iodine and the thyroid diseases. Methods The effects of excess iodine on rat thyroid and human thyroid cell were observed . Results All the rats in the experimmental group had diffuse colloidal goiter.With the increase of iodine levels,the relative and absolute weight of the goiter increased and revealed atypical abnormal hyperplasia as compared with the control group. The heights of thyroid follicular epithelial cells were decreased and the areas of thyroid follicular spaces were enlarged(p

Objective To observe the curative effect of adult ischemic necrosis of femoral head by intramedullary decompression and arterial pulse pressor infusion.Methods 82 patients with ischemic necrosis of femoral head were treated in the combined treatment of percutaneous intramedully decompression and pulse pressor five medicine combined infusion in target vessels using ZC-Ⅰ-discome.Results By follow-up for 12～48 months,the painful in hip joint was alleviated and joint movement was also improved.The regenerative vessels and bone in femoral head and neek were obvious.Conclusion This therapcutic methods is safe and superior to single interventional medicine treatment for ischemic necrosis of femoral head.

After the feasibility to reform the blended teaching model for health information management and its im-plementation were described , the reform of blended teaching model for health information management and its prob-lems were analyzed in terms of its model establishment , process implementation and effect assessment according to the target of professional training in Bengbu Medical College .

Objective To explore the relationship of different body mass index, waist circumference and serum lipid levels with essential hypertension among residents of Ningbo. And to explore the predictive value of BMI and WC (Waist Cir-cumference) for hypertension. Methods Adopting cluster sampling, 2 303 people (1 081 cases of hypertension and 1 222 people with normal blood pressure) were collected in the four townships of Ningbo City. We conducted questionnaires, physi-cal examination and blood lipid testing for all of subjects. WC group:WC≥85 cm in male or WC≥80 cm in female is central obesity, and the others are normal. BMI groups:BMI≥24 kg/m2 is overweight, and BMI<24 kg/m2 is normal. The relationship of BMI, WC and serum lipid levels with hypertension was analyzed by multivariate unconditional logistic regression model. The predictive value of BMI and WC for hypertension was analyzed by receiver operating characteristic (ROC) curve. Results WC, BMI, total cholesterol (TC), triglyceride (TG) and low density lipoprotein cholesterol (LDL-C) in hypertension group were higher than those in control group (P<0.01). And WC, BMI, TG, LDL-C is the impact factor for hypertension. The overweight rate and central obesity rate in hypertension group were higher than control group (P<0.01). TG and LDL-C level abnormality, overweight and central obesity were the risk factors of hypertension. As a risk factor of hypertension, over-weight with central obesity group is higher than overweight with normal waistline group, simple central obesity group and nor-mal group. In the area under the ROC curve, BMI is higher than WC in both male and female population. Conclusion WC, BMI, TG and LDL-C abnormalities were risk factors for hypertension, and BMI was a better predictive factor for hyper-tension than WC.

BACKGROUND:C2 transpedicle screw fixation for Hangman fractures has been paid more attention due to reliability and no loss of physiological function.However,there are lacks of biomechanical evidences for indication treatment because the fixation is single segmental.OBJECTIVE:To investigate the biomechanical stability of C2 transpedicle screw fixation for Hangman fractures.DESIGN,TIME and SEITING:This was a contrast study which was performed at the General Key Laboratory of Biomechanics,First Military Medical University of Chinese PLA from May to August 2004.MATERIALS:AO-universal titanium alloy transpedicle screw of 18 25 mm in length and 3.5 mm in diameter was adopted in this study.Six fresh C1-C4 cervical vetebrae samples were ordiually made into type Ⅰ,ⅡA,and Ⅱ Hangman fracture models.METHODS:After transpedicle screw fixation.Hangman fracture models were measured by non-destroyed style with spinal anterior flexion/posterior extension,left/right lateral curvature,and left/right axial direction.Loading/unlonding circulation was performed three times during each testing.Kinematics indicators were measured on the 3rd circulation.MAIN OUTCOME MEASURES:Spinal motor images at zero load and maximal load were obtained with laser photoscanning(0.1% in precision),and the corresponding systematic software was adopted to calculate 3D range of movement.RESULTS:The relative stability of type Ⅰ Hangman fracture models after C2 transpedicle screw fixation was 100.62%(inflexion),96.91%(posterior extension),99.19%(lateral curvature),and 97.12%(rotation)as compared to control group (P＞0.05).The relative stability of type Ⅱ Hangman fracture models after C2 transpedicle screw fixation was 47.84%(inflexion),21.29%(posterior extension),65.98%(lateral curvature),and 41.69%(rotation)as compared to control group (P＜0.05).CONCLUSION:Biochemical evaluation suggests that type Ⅰ and Ⅱ A Hangman fractures do fit for C2 transpedicle screw fixation,and the fixation may generate well physiological fixation or stability.However,stability of type Ⅱ Hangman fracture is poor,so it is not suitably adopted single transpedicle screw fixation.