The questionnaire investigation showed that the clinicians in Sichuan Province have a rather good cognition of medical information with a strong desire for medical information.However, measures should be taken to alleviate the contradictions between their information need and access ability, and excellent medical information service should be provided for them at a low cost .

Objective To discusse the fouling mechanism of 0.2 ?m Al_2O_3 ceramic membrane in the microfiltration of Qiju Dihuang Pill aqueous extract. Methods Qiju Dihuang Pill aqueous extract was microfiltered in this experiment. The distributions of filtration resistance were studied according to the Darcy-Poiseuille principle. The substance of deposit on the membrane surface was analysed by Fourior transform infra-red spectrum and particle diameter analysis. The characteristic of the surface and cross section of the polluted membrane was observed by SEM. Results The filtration resistance was mainly concentrated on the surface of deposit resistance, the membrane itself and the concentration polarization resistance were less important, and the pore blocking resistance was the least important. Moreover, this result was proved by SEM analysis. The molecule of the fouling substance mainly contained peptid, carbonyl, and hydroxy bonds by IR. The particle size distribution of the deposit substance on the polluted membrane surface: The particle radius taking a larger percentage in volume concentrated in 18.267 ?m around, while the particle radius taking a larger percentage in quantity concentrated in 0.424 ?m around. Conclusion Study on the fouling mechanism of the membrane in the microfiltration provides a great significant guidance for exploring the effective measure of relieving the reduced membrane flux and the appropriate cleaning procotrol.

Objective To discuss the fouling mechanism of ceramic membrane in the microfiltation of extract of Qijudihuang Wan and obtain the effective cleaning method. Method The extract of Qijudihuang Wan was microfilted in this experiment, and the distributions of filtration resistance were studied according to the Darcy-Poiseuille principle. The characteristic of the surface and section of the polluted membrane was analysed by SEM also. Result ①For the main body, the filtration resistance is mainly decided by the deposit resistance, the membrane itself and the concentration polarization resistance are less important, and the pore blocking resistance is least important. Moreover, this result is proved by the analysis of SEM. ②The effective four-step cleaning procotrol, which can almost recover original membrane flux, is achieved by three cleaner, including ultrasound, NaOH solution and HCl solution. Conclusion Based on the different fouling mechanism, the appropriate cleaning method can be obtained. This provides great significance for the application of the industrialized manufacture.

AIM: To discuss the fouling mechanism of 0.2 ?m Al_2O_3 ceramic membrane in the microfiltation of extraction of Qijudihuang Pills, and obtain the effective cleaning procotrol. METHODS: The extract of Qijudihuang Pills microfiltered and the distributions of filtration resistance were studied according to the Darcy-Poiseuille principle. The characteristic of the surface and section of the polluted membrane were analysed by SEM also. RESULTS: ① For the main body, the filtration resistance was mainly decided by the deposit resistance, the membrane itself and the concentration polarization resistance were less important, and the pore blocking resistance was minimum. Moreover, this result was proved by the analysis of SEM. ② The effective four-step cleaning procotrol, which could almost recover original membrane flux, was achieved by three cleaner, including ultrasound, NaOH solution and HCl solution. CONCLUSION: Based on the different fouling mechanism,the appropriate cleaning procotrol can be obtained. This provides great significance for the application of the industrialized manufacture.

AIM: To discuss the fouling mechanism in 0.2 ?m Al_2O_3 commie membrane microfiltation of Tangkeqmg Compound water extract. METHODS: The total filtration resistance and its distribution were used as indexes to study the effect of pore size and materials of ceramic membrane on membrane fouling in clarification. SEM (scanning electronic microgragh) technology was used to study the microstructure of surface and section of new membrane and contammted membrane and physica and chemical examination were done on the fouling substances on the membrane surface. RESULTS: The pore size and materials of membrane affected the total filtration resistance and its distribution in clarification. The results of filtration resistance dislribution and SEM suggested that the fouling of 0.2 ?m Al_2O_3 membrane mainly lied on the surface. The contaminations on membrane surface were mostly the substances holding function groups, such as C=O, CO-NH and C-O-C. According to volume percentage, the semidiameter of contaminations on the membrane was mostly around 23.738 ?m. However, according to quantity percentage, the semidiameter of contaminations on the membrane was mostly around 0.521 ?m. CONCLUSION: Study on the fouling mechanism of the membrane is of great significance for looking for the effective measures for relieving the downward trend of the membrane flux and for the appropriate membrane cleaning in the clarification of Tangkeqing Compound extract using 0.2 ?m Al_2O_3 ceramic membrane.

Objective To study the distribution of filtration resistance in AL2O3(0.2 ?m) ceramic membrane microfiltration of Tangkeqing water extract,obtain the effective membrane cleaning methods,and enrich the theory of ceramic membrane cleaning technology.Methods The filtration resistance and its distribution were got with the filtration model of the Darcy-Poiseuille principle which was modified by M.MDa-Cin,etc.Meanwhile,The microstructure of fouled membrane surface and cross-section was analyzed by SEM.Results The main parts of filtration resistance lay in deposit layer and concentration polarization layer with the ratio of 52.5% and 34.4%,respectively.However,the membrane itself and the pore blocking were in the fewer ratios of 8.8% and 4.3%,respectively.The result was in accordance with that of SEM.The fouled AL2O3 membrane was cleaned with low-pressure tap water and ultrasonic wave successirely.Conclusion The appropriate cleaning means are chosen based on the filtration resistance,which can provide good instructions for the industrialized production.

Objective The purpose of this study was to evaluate the disinfection effectiveness and properties of acrylic resin via microwave irradiation. Methods Forty acrylic resin base dentures fabricated in a standardized procedure were chosen and divided into Group A,B,C and D randomly. Group A,B and C were immersed in 200ml distilled water and submitted to microwave irradiation at 700W for 3,4,5 minutes individually. Group D was used as positive control. Bacteria specimens from each group were got for culture and numbers were calculated. Then the four groups were tested for the flexural strength and impact strength by universal test machine before and after microwave irradiation sterilization. Results The germicidal ratio of Group B was more than 90% ,while the ratio of group C was 100%. There was no significant difference in flexural strength and impact strength between group C and group D. Conclusions Microwave irradiation for 5 minutes at 700W produced sterilization of dentures contaminated with all bacteria whereas the denture strength is not affected. Microwave irradiation at 700W solution for 5 minutes was effective to sterilize acrylic resin base dentures.

OBJECTIVE: To present our experience of manipulation under general anesthesia for treating postoperative hip joint stiffness in children.METHODS: 193 children (226 hips) with postoperative joint stiffness were retrospectively studied at the Department of Pediatric Orthopaedics, Shengjing Hospital, China Medical University from January 1978 to December 2005, comprising 53 males and 140 females, aged 1-14 years old. 226 hips with postoperative stiffness from open reduction of developmental dysplasia of the hip (DDH) (155 cases with 188 hips) and capsulotomy for hip sepsis or tuberculosis (38 cases with 38 hips) were retrospectively reviewed. All patients laid on the surgical table supinately under general anesthesia. The assistant fixed the pelvic with palms. The operator manipulated the hip joint with 3 steps: flexed hip joint slowly and gently to 110°-120° or more; then abducted and externally rotated hip joint; adducted and internally rotated the hip. Then 3-step passive manipulation was repeated for once at least. As soon as the patient waked from general anesthesia, Continuous passive motion was applied for the affected hip with the range of motion increasing daily for 1-2 weeks. They were followed averagely 15 months (6-24 months) to evaluate the promoted range of motion in flextion-extension and adduction-abdduction.RESULTS: 186 hips (82.3%) succeeded in manipulation in addition to 34 failure hips (15%) and 6 hips (2.7%) with femoral neck fracture. The successful rate, promoted range of motion in group of ≤6-year-old and group of ≤12-month-duration from primary surgery were significantly higher, femoral neck fracture rate was less than those in group of >6 years of age and group of >12-month-duration from primary surgery.CONCLUSION: Passive manipulation under general anesthesia is a safe, uninvasive and effective method in treating postoperative hip stiffness in children. Younger age (≤6 years) and less duration from the primary surgery (≤12 months) would yield better result.

Objective To investigate the fall-related knowledge and behaviors and ways after injury by chief caregivers of inpatients with neurological disease.Method We designed a questionnaire of fall-related knowledge,behaviors and ways after injury and used it among 208 chief caregivers of inpatients with neurological disease.Results On fall-related knowledge,the three items with the lowest scores about fall-related knowledge included fall-related medicine,postural hypotension and abnormal excretion.Of fall-prevented behaviour score,the lowest 3 items were three steps for getting up,placing things correctly and using wheelchair protection derive.Of the inquiry and fall measures score,the lowest 3 item were helping the patient up,observation and prevention after fall.There were significant differences in the total scores on education,time for taking care of the patients,history of fall and health education on fall (P＜0.05).The scores of those with education of senior middle school,college or above were significantly higher than those with education of junior middle school or lower (P＜0.001).The following time for taking care of the patients were compared with statistics significant:＜1month and 3～6 month,＜1month and ＞6 months,1～3 months and 3～6 months (P＜0.001).Conclusion The caregivers of the patients with neurological disease are short of knowledge in fall-related knowledge,normal behaviors and should carry out individualized health education to them.

Objective To explore the value of PET-CT and CT in the assessment after radiofrequency ablation (RFA) in lung cancer.Methods Eighteen patients were randomly divided into short-term group ( 8 cases) and long-term group ( 10 cases).Patients in short-term group received PET-CT and CT examination within 10 days after RFA therapy,whereas those in long-term group got PET-CT and CT examination within 2 months after RFA therapy.The value of PET-CT and CT after RFA therapy through the result of the image was compared between two groups.Results All patients were classified as stable disease in CT,while in PET-CT assessment,33.33％ (6/18) of the patients presented complete remission and 66.67％ (12/18)presented partial remission.37.50％ (3/8) of short-term group presented complete remission,62.50％ (5/8) of short-term group presented partial remission.30.00％ (3/10) of long-term group presented complete remission,70.00％(7/l0) of long-term group presented partial remission.Conclusion PET-CT is superior to CT in the assessment of the effectiveness of RFA therapy,and there is no difference between short-term and long-term PET-CT examination,therefore early PET-CT is more with clinical significance.