Objective To Cenderstand the sanitation status of secondary drinking water supply system of public places. Methoods The sanitation of secondary drinking water supply system was investigated by on_site survey method and the sanitary quality of water samples were determined. Results The over_standard rates contents of Fe and total coliformz of water samples of secondary water supply system significantly increased compared with the related levels of tap water of municipal water supply. The unqualified rate of free residual chorine of water sample from secondary water supply system reached 54.55%. Conclusions The equipments for secondary water supply were obsolete and unretional design. The sanitary quality of secondary water supply was also affected by geological structure easily.

Objective To gain more pathophysiolgic knowledge about acute obstructive hydrocephalus and to explore its rapid and effective treatment by establishing canine acute obstructive hydrocephalus model.Methods Acute obstructive hydrocephalus model was established by injecting cyan-acrylic gel glue into the fourth ventricle via posterior fosse craniotomy in 9 male adult mongrel dogs.At the same time,lateral ventricle catheterization were performed and were fixed on the scalp to connect reservoir bag so that the changes of intracranial pressure (ICP) could be measured dynamically,and the changes of neurological function were observed.Results Acute obstructive hydrocephalus model was successfully established in 6 of the total 9dogs.ICP was (48.2 ± 6.1 ) cm H2 O at 48 hours after the injection and was (56.4 ± 5.7 ) cm H2 O at 72 hours after the injection,it increased 392％ and 459 ％ respectively.And the ICP after injection was significantly different(P ＜ 0.01 )compared with that before injection (12.3 ± 3.1 )cm H2O.Conclusion The establishment of acute obstructive hydrocephalus model has high success rate,and is easy to reduplicate; ICP could be measured dynamically and also could be reduced by releasing CSF;Thus,ventricular drainage is the most rapid and effective treatment for acute obstructive hydrocephalus.

Olive oil is one of the important byproducts in agriculture. It is rich in oleuropein, which can be hydrolyzed into several bioactive phenolic compounds, including hydroxytyrosol (HT).There are many literatures have been confirmed that HT has significant pharmacological effects in the anti-inflammatory, anti-virus, regulation of metabolic disorders and treatment of degenerative diseases. However, HT has severe instability in vivo and in vitro. It is a challenge how to improve its stability through structural transformation or utilization of pharmaceutical means to processing. This paper will focus on biological activity of HT and its stability improvement, and provid some new ideas for expanding the research and promoting the development of HT in the field of Medicine.

Objective To explore the value of automated functional imaging(AFI)in predicting coronary artery stenosis in patients without ventricular wall motion abnormalities.Methods A total of 40 patients without ventricular wall motion abnormalities under two-dimensional echocardiography and confirmed coronary artery heart diseases(CHD)(coronary stenosis≥70％)by coronary angiography(CAG)at the Xinxiang Central Hospital from July 2018 to September 2019 were selected as the research subjects.The detection rates of coronary artery stenosis ≥70％by AFI and CAG were compared.With reference to CAG as the gold standard,the predictive value of AFI for coronary artery stenosis ≥70％was evaluated.Results There was no significant difference in the detection rates of coronary artery stenosis ≥70％by AFI and CAG(x2=1.667,P＞0.05).The predictive efficacy of AFI for coronary artery stenosis ≥70％was as follows:a sensitivity of 100％,a specificity of 63.6％,the positive predictive value of 69.2％,the negative predictive value of 100％,and an accuracy of 80％for predicting stenosis ≥70％in the left anterior descending artery;a sensitivity of 56.2％,a specificity of 91.6％,the positive predictive value of 81.8％,the negative predictive value of 75.8％,and an accuracy of 77.5％for predicting stenosis ≥70％in the left circumflex artery;a sensitivity of 95.6％,a specificity of 47.0％,the positive predictive value of 70.9％,the negative predictive value of 88.0％,and an accuracy of 75.0％for predicting stenosis ≥70％in the right coronary artery;the overall sensitivity of 85.9％,the overall specificity of 69.8％,the overall positive predictive value of 72.0％,the overall negative predictive value of 84.6％,and the overall accuracy of 77.5％.Conclusion AFI can provide a sensitive,objective,non-invasive,and inexpensive examination method for the early clinical forecast of coronary artery stenosis.