黔产阴地蕨的化学成分预试分析

用水、乙醇和石油醚对黔产阴地蕨进行提取,根据颜色反应及沉淀反应初步判断所含化学成分。结果表明:阴地蕨中含有皂苷、酚类、糖、多糖、有机酸、鞣质、蛋白质、香豆素、内酯、强心苷、黄酮、挥发油、甾体和三萜类等化学成分;不含生物碱和油脂。

黔产五香血藤的成分预试分析及理化鉴定

五香血藤为贵州省常用的民族、民间草药。经鉴定黔产五香血藤药材主要来源有两种：一为五味子科植物铁箍散schisandra propinqua（Wall.）Baill．var．sinesis Oliv．的干燥根．用其根及叶入药。能祛风活血，解毒消肿。根治风湿麻木，跌打损伤，胃痛，月经不调，血栓闭塞性脉管炎。叶治疮疖，毒蛇咬伤，外伤出血。

Analysis of pre-crack kinking and delamination in terms of SLB test of honeycomb sandwich structure

The flatwise tension(FWT) and single leg bending(SLB) tests were used to investigate the fracture behavior of honeycomb sandwich specimens.In the FWT test,only the interlaminar delamination was observed.The test results show that the interfacial peel strength is higher than the interlaminar peel strength.In terms of SLB experiment,a new fracture mode was found,namely IKP(initiation of interlaminar delamination,kinking into facesheet and propagation of interlaminar delamination).The virtual crack closure technique was applied to separate the values of Mode I and Mode II components of the strain energy release rate in SLB experiment.The finite element analysis result shows that the Mode I strain energy release rate is higher than the Mode II strain energy release rate.To simulate the failure of SLB test of honeycomb sandwich specimens,a new computational model based on the Tsai-Hill failure criterion and the cohesive zone model is proposed.In comparison with experimental results,it can be concluded that the computational model can validly simulate the IKP of a honeycomb sandwich structures with reasonable accuracy.

Present and future of prophylactic antibiotics for severe acute pancreatitis

AIM: To investigate the role of prophylactic antibiotics in the reduction of mortality of severe acute pancreatitis (SAP) patients, which is highly questioned by more and more randomized controlled trials (RCTs) and metaanalyses. METHODS: An updated meta-analysis was performed. RCTs comparing prophylactic antibiotics for SAP with control or placebo were included for meta-analysis. The mortality outcomes were pooled for estimation, and re-pooled estimation was performed by the sensitivity analysis of an ideal large-scale RCT. RESULTS: Currently available 11 RCTs were included. Subgroup analysis showed that there was significant reduction of mortality rate in the period before 2000, while no significant reduction in the period from 2000 [Risk Ratio, (RR ) = 1.01, P = 0.98]. Funnel plot indi-cated that there might be apparent publication bias in the period before 2000. Sensitivity analysis showed that the RR of mortality rate ranged from 0.77 to 1.00 with a relatively narrow confidence interval (P < 0.05). However, the number needed to treat having a minor lower limit of the range (7-5096 patients) implied that certain SAP patients could still potentially prevent death by antibiotic prophylaxis. CONCLUSION: Current evidences do not support prophylactic antibiotics as a routine treatment for SAP, but the potentially benefited sub-population requires further investigations.

Experimental and analytical studies on the deformability of a precast RC shear wall involving bolted connections

To study the deformability and ductility of an innovative precast shear wall joined by bolted connections,experimental tests were conducted on two test walls under monotonic and cyclic loading,respectively;subsequently,theoretical analysis was performed on the deformation performance of the shear wall assembly.The test results confirmed the favorable deformability and ductility of the specimens.The top displacement of the shear wall assembly was analytically decomposed into several constituent parts,the theoretical formulae of which were subsequently deduced.The compositional analysis demonstrated that the top displacement of the test wall was primarily induced by the elastic deformation of the upper wall panel(UWP),the relative slippages within the bolted connections,and the flexural deformation within the plastic region of the UWP,while the constituent part contributed by the deformation in the connecting steel frame can be neglected.

Predictors of functional outcome after hanging injury

Purpose： Suicide becomes a serious problem in today＇s society and hanging is a common method of suicide. We want to find the factors which can predict the final functional outcomes of these cases. Methods： All patients who presented to Accident and Emergency Department （ED） of the National Cheng Kung University Hospital from 1st January 2005 to 31th December 2013 with a hanging injury were included in this study. All cases were divided into good outcome group and bad outcome group according to Glasgow Outcome Scale （GOS）. Data was analyzed by Mann-Whitney test and chi-square test. Results： Glasgow Coma Scale （GCS） 〈 3, pupil dilation and no pupillary light reflex both at the scene and ED were the factors to indicate poor functional outcome. Out-hospital cardiac arrest （OHCA）, acidosis （pH 〈 Z2） and the need for intubation once arriving at ED were also related to poor functional outcome. OHCA cases all had poor functional outcome, Conclusion： GCS, pupil size, pupiUary light reflex, OHCA and acidosis are useful as prognostic factors. GCS= 3 lead to a very poor outcome. However, the functional outcome seems good in patients with GCS〉3. There parameters can help to predict the outcome before treatment.