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.

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The enrichment of plamitic acid at sn-2 position of triglyceride in human milk improves a high efficiency of fatty acid absorption,softer stools and prevention of calcium malabsorption in infants.Meanwhile,it increases early bone mineralization and development,adjusts the composition of the intestinal microflora.It also may lower the extent and severity of intestinal inflammation after injury and modulate early infant crying.

Objective To study the copulation of the abnormal level of maternal serum-free β-human chorionic gonadotropin ( β-hCG ) during second-trimester pregnancy and adverse pregnancy outcome.Methods Two hundred and nine pregnant women in second-trimester pregnancy were detected serum β-hCG and followed up ti11 delivery.The correlation of the abnormal level of serum β-hCG and adverse pregnancy outcome were observed.Results In 209 pregnant women,the level of serum β -hCG of 105 cases were over standard [(84.9 ± 11.6) kU/L](over standard group),while the level of the rest 104 cases were (18.6 ± 1.3) kU/L within normal range (normal group).The incidence rate of gestational hypertension,premature deliwery,premature rupture of membranes and suffocation of new born infants in over standard group were all higher than those in normal group [14.3％(15/105 ) vs.0,18.1％(19/105) vs.2.9％ (3/104),11.4％(12/105) vs.0,29.5％(31/105) vs.0,P＜0.05].Conclusions The abnormality of serum β -hCG of women in second-trimester pregnancy can reflect the placenta dysfunction and it is a signal of adverse pregnancy outcome.Therefore,detecting the level of serum β -hCG is useful for preventing adverse pregnancy outcome.

Dextrocardia is formed by the disruption of the normal left-right (L-R) asymmetry of the thoracoabdominal organs.Asymmetric expression of Nodal,Pitx2,Cited2 have affected L-R asymmetry of vertebrate significantly,and generated dextrocardia,mesocardia,ectopia cordis,heterotaxy and so on.Dextrocardia is often accompanied by congenital cardiac malformation.Therefore,it is so difficult to be treated that it has poor prognosis.This paper reveiws the molecular mechanism and it's regulation of dextrocardia for proceeding the genetic diagnosis and early intervention of dextrocardia sequentially in order to improve the survival rate and life quality of patients.

ObjectiveTo observe the effect of toosendanin on proliferation and apoptosis of human hepatoma cell line HepG2 cells,and to study the mechanism.MethodsHuman hepatocellular carcinoma HepG2 cells were randomly divided into control group(group A) does not add any medication,the observation group(group B) joined TSN 80mmol/ml,cultured cells for 24,48,72 hours.HepG2 cells proliferation inhibition rate was measured by MTT; Hepatocellular carcinoma HepG2 cell cycle and apoptosis rate was deteded by flow cytometry.ResultsTECAN determination revealed two groups of hepatocellular carcinoma cell proliferation had statictical significance ( x2 =5.33,P ＜0.05 ) ;flow cytometry revealed two groups S,G0/G1,M/G2 phase of the cell rate ( t =6.31,6.26,6.56,all P ＜0.05 ),apoptosis rate had significant difference ( x2 =6.15,P ＜ 0.05 ).ConclusionToosendanin could obviously inhibit the proliferation of HepG2 cells,and induce apoptosis of tumor cells.

Objective Discusses TT3,FT3,TT4,FT4 and TSH the value which examines in the thyroid gland disease patient;analysis thyroid gland disease patient TT3,FT3,TT4,FT4 and TSH change situation.Methods analyzes my hospital 200 example thyroid gland disease patients,and selects the normal adult 50 examples to take the control group.analytic method to each group of examination thyroid function,and carries on the comparison to the group various targets'examination value.Results primary hyperthyroidism group T3,T4,FT3,FT4 were higher than normally,the hypothyroidism group T3,T4,Fr3,FT4 to be lower than normally.The TSH content primary hyperthyroidism group was lower than normally,the hypothyroidism group to be higher than normally obviously.Compares its difference with the control group to have statistics significance.hyperthyroidism group its diagnosis coincidence rate FT3 was 96%,TSH was 96%,T3 was 92%,FT4 was 90%,T4 was 88%.The hypothyroidism,the diagnosis coincidence rate respectively was:TSH was 100%,FT4 was 93%,T4 was 90%,FT3 was 77%,T3 was 70%.Conclusion FT3,T3,TSH the significance are big in the hyperthyroidism diagnosis;FT4,T4,TSH the significance are big in the hypothyroidism diagnosis.

Objective To investigate the effect of butylphthalide combined with nimodipine in the treatment of vascular cognitive impairment.Methods 160 patients with vascular cognitive impairment were divided into the control group and the observation group according to treatment methods,80 cases in each group.The control group was treated with nimodipine,and the observation group was given butylphthalide combined with nimodipine treatment.The therapeutic effect and cognitive function were compared.Results The obvious effective rate of the observation group was 58.75 ％ (47/80),which was significantly higher than that of control group 45 ％ (36/80) (P =0.03).After treatment,MoCA score of the observation group was (24.83 ± 9.48),which was significantly higher than that of the control group(21.64 ±9.52) (P =0.04).ADL score of the observation group was(58.31 ± 11.27),which was significantly higher than(53.28 ± 10.32) of the control group (P =0.04).After treatment,directional force,visual spatial and executive function,delayed memory and attention of the observation group were higher than those of the control group (P =0.03,0.02,0.04,0.02).Conclusion Butylphthalide combined with nimodipine in the treatment of patients with vascular cognitive impairment has good effect.