浅析贝叶斯分类方法在手机垃圾短信过滤系统中的应用

论述了贝叶斯分类方法在手机垃圾短信过滤系统中的应用,利用该方法对短信内容进行分类识别,从而实现对垃圾短信的有效过滤,最后对贝叶斯分类模型进行了结果分析与评估,证明该分类模型具有一定的现实可行性和可扩展性。     

克拉申的两个假设在高职英语听力教学中的运用

听力是英语教学中的一个重要环节,同时也是学生第二语言习得的一个薄弱部分.本文根据克拉申提出的"输入假设"(Input Hypothesis)和"情感过滤假设"(Affective Filter Hypothesis)理论,探讨其在高职英语听力教学中的运用,借此来提高学生的英语听力水平.     

Cystatin C—A novel marker of glomerular filtration rate: A review

Glomerular filtration rate is routinely assessed by measuring the serum markers such as urea nitrogen and serum creatinine. Although these markers are widely used to assess renal function but they do not perform optimally in certain clinical settings. There is thus a practical need for an easily automated alternative to plasma creatine, which would be more specific, sensitive and reliable from the analytical and clinical view point. Compared with the above endogenous markers, and time consuming laborious tests, Cystatin C facilitates the recognition of abnormal renal function in children, as its reference range is constant beyond the 1^st year of life. This review mainly focuses on the diagnostic performance of Cystatin C against other renal markers in the pediatric population and in specific subpopulations of patients.     

Krashen的二语习得理论与母语在外语课堂的使用

母语在外语课堂教学中的作用是外语教学研究中长期存有争议的问题。本文尝试将Krashen的输入假设、情感过滤假设与外语课堂母语的使用情况相结合,论证大学外语课堂适度使用母语有助于提供可理解性输入,降低学生的情感过滤,从而增加学生对所输入知识的吸入。     

Comparing age-wise reference intervals for serum creatinine concentration in a “Reality check” of the recommended cut-off

An increase in the communication within the healthcare services, both nationally and internationally, has strengthened the need for harmonization of measurements and reference intervals in laboratory medicine. In the present report, the calculated reference interval for serum creatinine (sCr) levels of healthy normal individuals (n=1121) in different sex and age groups are compared with the established interval. The calculated reference interval for sCr level was 0.4–1.3 mg/dL and 0.6 to 1.3 mg/dL in the age groups of 21–40 and 41–60 years respectively. The difference between the mean sCr values in total males and total females (age range 21–60 years) was statistically significant (p<0.0001); When male and female subjects were analyzed age-group wise, the data showed a significant difference in mean sCr values (p<0.0001) in three age groups (21–30, 31–40 and 41–50 years) however, in older age group (51–60 years), the difference was non-significant (p=0.07). The reference ranges were 0.7–1.3 and 0.4–1.0 mg/dL for males and females respectively where the lower limit was 0.1–0.2 units less than that of standard limits. An increase in the mean value of sCr was observed particularly in females with an increase in age. Hence it is of interest to validate an age specific reference ranges for sCr in our population.     

过滤处理对再生铝铸造性能的影响

过滤是铝熔体净化的一种重要方式,通过过滤处理,可以对铝熔体的铸造性能产生显著影响。本文以废铝合金门窗为主要材料,经熔化后,研究过滤处理对其流动性、裂纹倾向等铸造性能的影响。通过实验研究得出：通过过滤处理,可以显著改善熔体的流动性;同时,过滤处理下的试样,裂纹倾向不明显,而且过滤处理还有明显的除气效果。     

一项提高微絮凝效果的技术--直接过滤中石英砂滤料的改性

分别经酸液,碱液和先酸液后碱液浸泡改性的混合石英砂滤料,应用于低浊度低色度原水的微絮凝一直接过滤的饮用水处理.研究表明三种改性对过滤效果的改善呈现先酸后碱液>碱液>酸液>未改性的顺序.过滤前后各项水质指标改善为除色率≈λ254去除率>截污量>除铝率≥除浊率.是石英砂改性的一种值得进一步探究的新办法.     

网络安全与对未来防火墙技术的展望

虽然防火墙是目前保护网络安全的有效手段,但也有明显不足。该文通过对现有防火墙技术的弱点和局限性分析,提出了未来防火墙技术的发展趋势。     

A study of the interaction between ropranolol and NSAIDs in protein binding by gel filtration method

Drug protein binding phenomena can lead to some interesting drug—drug interactions when one drug displaces another in the binding site. Studies of protein binding are conducted by several methods including equilibrium dialysis, ultra-filtration and chromatographic methods. Gel filtration is a simple chromatographic method in protein binding studies. Propranolol binds to plasma proteins by 90%–95% in circulation system and other drugs with high protein binding may displace it. In this study protein binding of propranolol has been studied using gel filtration to Bovine Serum Albumin (BSA) alone and in the presence of Acetyl salicylic acid (ASA), Indomethacin and mefenamic acid has been studied using gel filtration method. The results indicated that ASA decreased protein binding of propranolol by 20% to BSA and other drugs did not displace propranolol from the binding site. Therefore, ASA may alter pharmacological effects of propranolol.