2009-2011年渭南市生活饮用水水质检测结果分析

目的 了解渭南市生活饮用水卫生状况,探讨影响水质安全的主要因素,为相关部门制定改善措施提供科学依据.方法按照《生活饮用水标准检验方法》(GB/T 5750-2006)进行检验,按照《生活饮用水卫生标准》(GB/T 5749-2006)进行评价.结果 3年共检测生活饮用水618份,合格样品210份,合格率34.0％.所检项目中微生物指标合格率最低,仅为36.0％.2009-2011年水样合格率分别为26.6％、32.1％、42.8％,差异有统计学意义(x2=12.28,P＜0.01).结论 渭南市生活饮用水水质合格率较低,受微生物污染严重,必须加强对饮水水源的卫生防护,加强水质沉淀、净化和消毒处理,确保城镇居民饮水安全.     

急性阑尾炎的CT分级对外科术后病理结果预测分析

目的：探究CT分级方法对急性阑尾炎外科术后病理结果预测价值。方法：选取来本院急诊科就诊疑似急性阑尾炎的患者73例为临床研究对象，所有患者接受多层螺旋CT腹部扫描并进行CT分级，24h内均接受开腹手术治疗，摘取阑尾组织作病理学检查作为本病的准确诊断，通过统计学方法分析CT分级的诊断方法是否对急性阑尾炎外科术后病理结果预测有明确诊断价值。结果：所有73例患者共有39例患者诊断为急性阑尾炎，对应CT分级中3级及以上阳性诊断率较高；急性阑尾炎CT分级的Roc分析，曲线下面积（AUC）为0.946，具有明显差异性（P〈0.05），选择截断值为3，故临床应以CT分级3级及以上患者诊断为急性阑尾炎。结论：CT分级方法能准确预测急性阑尾炎外科术后病理结果，可作为临床急性阑尾炎诊断标准。     

Cholera‐schistosomiasis coinfection dynamics

The present work investigates the coinfection dynamics of the cholera and schistosomiasis diseases. The steady states of the model are examined. We obtain results for the model in detail and present the stability results whenever the basic reproduction number is less than unity ( ). For each submodel, the existence of backward bifurcation is presented and for the coinfection model. Furthermore, we formulate an optimal control problem with an appropriate set of control variables. The optimal control problem and the associated results are derived and discussed. The optimal control problem and the suggested controls are utilized to obtain optimal control characterizations. Numerical results are presented by choosing various optimal control strategies for the early elimination of both infections from the population. It is suggested that appropriate uses and application to the population could significantly reduce the infection. Therefore, based on our findings, we suggest to the public health department that the only possible cost‐effective strategy for the elimination of schistosomiasis and cholera coinfection is the combination of both diseases' preventive measures and the treatment of schistosomiasis.     

One-year clinical results with actarit—a preliminary report

Abstract

The effectiveness and safety of 1-year treatment with actarit were evaluated in patients with rheumatoid arthritis. Treatment was continued for 1 year or longer in 18 of the 34 patients. Early improvement in morning stiffness, grip strength, joint score and the Lansbury’s index were observed. Improvement in 1-h eythrocyte sedimentation rate was observed at the 12-month assessment. IgG was decreased at the 12-month assessment. Obvious improvement in C-reactive protein was not seen through the trial. No abnormal findings were noted in routine blood tests. Adverse reactions of special note were skin eruption in one patient and digestive symptom in one patient. However, no serious adverse reactions were observed.     

Our Midterm Results of the Birmingham Hip Resurfacing With and Without Navigation

We reviewed 148 consecutive hip resurfacings in order to assess the clinical outcomes of the BHR at midterm follow-up and to compare the accuracy of the navigation in the positioning of femoral component. We retrospectively analyzed 85 hips using the conventional jig to implant the femoral component and we prospectively followed 63 hips operated on by navigation. At a mean follow-up of 50.54 months, the Harris hip score improved significantly from 44.66 preoperatively to 98.45 postoperatively without any differences between the groups. Radiologically, we classic navigated group. Our clinical outcomes are excellent at midterm follow-up and the navigation definitely improves the implant position in both planes.