Objective:To establish a method for the uncertainty evaluation of the determination of benzoic acid. Methods: The content of benzoic acid was determined by acid-base titration. By constructed mathematics model, the source of the measurement uncer-tainty was analyzed, and the uncertainty components were quantized and combined. Results:The expanded uncertainty of benzoic acid was 0. 36% and the results were expressed as(99. 99 ± 0. 36%,k=2). Conclusion:The mathematics model is reasonable and relia-ble,and can be used in the uncertainty evaluation of content measurement of benzoic acid.

Objective To explore the effect of seminar applied in instruction of Introduction of Nursing Science for advanced vocational nursing students.Methods A total of 246 advanced vocational nursing students admitted in 2013 from class 1 to class 5 were named as the control group,who received traditional teaching method.Meanwhile a total of 252 advanced vocational nursing students admitted in 2013 from class 6 to 10 were set as the experimental group,and were given seminar teaching.We adopted California Critical Thinking Dispositions Inventory Scale,Academic Self-efficacy Scale and an anonymous questionnaire for teaching satisfaction.Theoretical examination was used to be final evaluation.Results The scores of theoretical examination in the experimental group were higher than that of the control group.The scores of critical thinking ability and academic self-efficacy of the experimental group were higher than those of the control group,with a significant difference.The result of the anonymous questionnaire showed that the experimental group showed a higher satisfaction degree with seminar teaching method.Conclusions Seminar teaching method applied in Introduction of Nursing Science is feasible and effective,which is better than traditional method in improving critical thinking ability,academic self-efficacy and teaching satisfaction.

AIM:To analyze the clinical significance of axial length, diopter and retinal nerve fiber layer thickness in hyperopia children with anisometropia amblyopia. ·METHODS: From January 2015 to January 2017 in our hospital for treatment, 103 cases, all unilateral, were diagnosed as hyperopia anisometropia amblyopia. The eyes with amblyopia were as experimental group ( 103 eyes), another normal eye as control group (103 eyes). We took the detection with axial length, refraction, foveal thickness, corrected visual acuity, diopter and the average thickness of retinal nerve fiber layer. ·RESULTS: Differences in axial length and diopter and corrected visual acuity were statistically significant between the two groups (P<0. 05). The two groups had no significant difference in retinal nerve fiber layer thickness (P>0. 05). There was statistical significance difference on the foveal thickness (P<0. 05). There was a negative correction correlation between the visual acuity, axial length with foveal and peripapillary nerve fiber layer thickness, but no significant difference in correlation ( P>0. 05 ). The positive correlation between diopter with nerve fiber layer thickness of foveal and around the optic disc were no statistically significant difference (P>0. 05). ·CONCLUSION:Retinal thickness of the fovea in the eye with hyperopic anisometropia amblyopia were thicker than those in normal eyes;the nerve fiber layer of around the optic disc was not significantly different between the amblyopic eyes and contralateral eyes. The refraction and axial length had no significant correlation with optic nerve fiber layer and macular foveal thickness.

Objective To study the effect of juvenile non-incarcerated oblique inguinal hernia on the development of testis and spermatic cord.Methods The volume of the testis was measured with B-ultrasound in normal and patient children.All patients were surgically treated and the spermatic veins were examined during operation.The patients were followed up for measuring the testicle volume at 3 months,6 months and 6 ～ 12 months after operation.Results Testicle volume on healthy side was larger than the involved side in patient group (P ＜ 0.05).There were still obvious differences between the two sides after 6 months(P ＜ 0.05).No significant difference was found after 6 ～12 months (P ＞ 0.05).Conclusion Non-incarcerated oblique inguinal hernia has effected on the spermatic cord and testicles,which need timely treatment.

Training mechanism reform was introduced in Chinese universities recently.It is a very useful attempt in the field of graduate education,in line with the trend of the international practice of graduate education.The core content of this reform is to build the research leading tutorial system and projects oriented grant-in-aid program.The intention of this reform is to mobilize the enthusiasm of both the instructors and graduate students effectively,who play key roles in the reform.In this paper,the author analyze the the difficulties and problems encountered in building up the instructor finance grantin-aid program,such as the inadequacy of instructors,involvement in policymaking,thecommercializationtendency of the teacher-student relationship,and the intensifying imbalance among different disciplines.The autor also proposes some countermeasures as preliminary solution.

Objective To investigate the efficacy and safety of uterine brace suture technique in the treatment of postpartum hemorrhage caused by uterine inertia.Methods 63 cases of postpartum hemorrhage of cesarean section were divided into two groups.33 patients treated with uterine brace suture technique severd as the research group.30 patients treated with traditional technique for postpartum hemorrhage of cesarean section were recruited as the control group.Operation time,hemorrhage volume,puerperal morbidity and therapeutic efficacy between the two groups were compared.Results Operation time was(53.31 4±10.61)min in the research group,and(76.16±13.73)rain in the control group,respectively.There were(601.00±162.36)ml of hemorrhage volume in the research group,and(1 063.33±320.10)ml in the control group,respectively.No case with hysterectomy in the research group,however 5 cases were treated with hysterectomy in the control group.There were 2 cases of puerperal morbidity in the research group,and 9 cases in the control group,respectively.The differences were statistically significant in operation time,hemorrhage volume,puerperal morbidity and therapeutic efficacy between the research group and the control group(t=7.428,7.121,χ2=4.698,all P＜0.05).Conclusion Uterine brace suture technique is one of effective treatment for postmnurn hemorrhage caused by uterine inertia,particularly useful because of its simplicity of application and relative safety.It Was worthy to be popularized in primary hospitals.

Objective To compare three methods of general anesthesia and spinal anesthesia in elderly patients with induction and recovery characteristics.Methods 100 patients undergoing urethral operation patients over 60 years were used to test.According to the different anesthesia methods,they were divided into propofol and propofol ( P-P) ,propofol,isoflurane,desflurane and propofol ( P-I)-( P-D) cases,each group in 25 cases,by ventani (1-2μg/kg IV) and propofol (1.0-2.0mg/kg IV) induced anesthesia respectively,and with 70% N2 O oxygen and injection of propofol [75-150μg/(kg· min)] or isoflurane[0.7%-1.2% of desflurane (breath) or breath 1%-4%] ,maintain anesthesia.After induction they were went on with laryngeal mask ventilation, maintain autonomous breathing.In the spinal anesthesia group(S),1.5 lidocaine ML were intrathecal injection by dissolved in 10%glucose. Results To compared with spinal anesthesia (9.3 ±3.4) min,propofol induced anesthesia method was relatively simple and induce faster (P<0.01).P-P,P-I and P-D group anesthesia induction time was (4.6 ±1.7)min,(4.7 ± 2.2)min and (3.8 ±1.4)min.In the induction period,patients in group S were higher aortic pressure and heart rate. 3 general anesthesia patients were similar to the time in induction of anesthesia,extubation and orientation patients in group S were lower(P<0.05),but the recovery was longer (P<0.01).The P-P and P-D group,Digit Symbol Sub-stitution Test( DSST) scores returned to baseline levels of time slightly shorter than that of group P-I.patients with dif-ferent methods of anesthesia had the same with postoperative nausea, somnolence, anxiety and coordination. Conclusion Induction and recovery time can be shortened in the elderly patients by using propofol and desflurane has no side effects.Therefore this method is suitable for elderly patients with transurethral operation using.

As an important policy, the multiple-site physician practice system is expected to promote the flow of physicians and optimize the distribution of health resources, though it is difficult to enforce in practice. From the perspective of institutional change, the fundamental reason lies in path dependence existing in system, organization and mindset:First, the government regulation system has a strong inertia to restrict the flow of physicians, and the multiple-site physician practice lacks the unity of legitimacy and rationality. Secondly, fierce competition between hospitals and the distribution pattern of rights and responsibilities between hospital and physician cause the hospitals to oppose multiple-site physician practices. Third, the stability tendency in mind and the desires for profit restrain the flow of physicians. Therefore, the institutional change of the multiple-site physician practice requires improvements in three aspects:the innovation of government systems to unlock the multiple-site physician practice must be accelerated to realize the unity of legitimacy and rationality;a change is needed in the operation logic of hospitals to control the profit incentives and management of practices by contract;the thought-pattern of physicians must be changed to con-front the proper demand for interests and build innovative incentive mechanisms.

After a description of the development of massive MOOC in domestic biomedicine and its characteris-tics, the major advantages and disadvantages of MOOC were analyzed in aspects of its copyright , guiding role of teachers, course experiments, and independent study of students, the application of MOOC in medical libraries was elaborated with 4 suggestions put forward for the development of MOOC in medical libraries.

0.1).Of the severity of bronchial asthma,56 patients were degree first,21 degree second,4 degree third,and 1 degree fourth.Of the classification of allergic rhinitis,65 patients were intermittent and 17 persistent.Of the severity of allergic rhinitis,63 patients were mild and 19 moderate-severe. Conclusion:There are correlation between clinical characteristics of allergic rhinitis and bronchial asthma.Their classification and severity are highly coherent.