蒸发器的设计、安装及试压

双效蒸发系统在安装过程中,由于设备庞大超重,无法进行水压试验,因此本设计通过工艺参数调整,将压力容器操作改为常压容器操作,进行了气密性试验．验证了设备的安全可靠性。     

Testing of adhesion of thin films to substrates

The results of the measurement of the adhesion strength of thin films or coatings to substrates are often influenced by system parameters that may be influenced by preparation of the specimen for testing or by deposition of the film itself. In this paper, the scratch, pull, and peel tests are analyzed in terms of criteria for film/coating removal and for the effects of system parameters such as film hardness and ductility, film thickness, substrate hardness, etc.     

Curtailed versions of randomized binomial tests

Consider a fixed sample size uniformly most powerful test of H_o: p ≤ p_o versus H₁ : p > p_o, where p is a Bernoulli parameter. If the test is non randomized, an optimally curtailed version stops sampling as soon as the final decision is certain. If the test is andomized, the optimal curtailment procedure is more complex. This paper gives a Simple, complete characterization of weakly admissible curtailments of such randomized tests.     

涂膜硬度及其测定方法

简要介绍了国家相关标准中铅笔硬度、摆杆硬度、压痕试验、划痕试验规定的漆膜硬度测定方法及其注意事项。     

钢/玻璃钢耐腐机车容器界面力学性能试验研究

本文针对机车用钢/玻璃钢复合容器提出了冷弯、弯曲性能及疲劳性能试验,以考察钢/玻璃钢界面处的性能.试验结果表明界面性能能满足使用要求,并测定了容器受冲击时界面不脱壳的冷弯角度.     

一种用于快速评价防腐体系效果的半定量挑战性试验方法及试验结果分析

介绍了一种半定量微生物挑战性试验方法（kokotest）,该方法选取了7株细菌．1株酵母菌．2株霉菌作为试验菌株,对防腐剂组成为：0．0095％甲基异噻唑啉N（MIT）、0．2％对羟基苯甲酸甲酯（MP）、0.1％对羟基苯甲酸丙酯（PP）的3款产品进行防腐效能检测,同时采用美国药典方法（USP方法）和国际化妆品、香精和洗涤剂协会方法（CTFA方法）进行验证,通过28天的试验,我们发现该挑战性试验方法试验结论可靠,可行性好,操作更为便捷。     

常用结构测试方法的介绍及其在玻璃中的应用

简要介绍了各种内部结构测试（XRD、IR、NMR）和表面结构测试方法（SEM＋EDS、AFM、XPS）的基本原理和测试内容，并举例介绍了这些测试方法在玻璃本体及镀膜中的实际应用。     

细胞毒性试验多孔平行数据异常值检验方法的比较

为了选取适合于对细胞毒性试验数据的异常值进行检验的方法、提高检测数据的可靠性,对常用的5种异常值检验方法的计算方法及判定原则进行了比较研究,并运用这5种异常值检验方法对同一组细胞毒性试验数据进行了分析。结果发现,拉依达准则计算简便,适合样本量较大时对异常值进行初筛;样本量较小时适合选取狄克逊准则、罗马诺夫斯基准则对数据中的异常值进行判定;从计算方法来看,肖维勒准则、格拉布斯准则、罗马诺夫斯基准则相似;对数据中异常值进行检出时,罗马诺夫斯基准则最为严格,肖维勒准则次之;狄克逊准则较适合于对多个异常值进行逐个检出。细胞毒性试验多孔平行数据属于小样本量数据,待检出的异常值不仅限于1个,选用狄克逊准则对细胞毒性试验多孔平行数据进行检验较为适宜。     

转矩流变仪混炼器和塑料挤出机的对比应用

采用RM-200智能转矩流变仪和小型实验用塑料挤出机进行PVC树脂流变及挤出对比试验,并分析了制品的性能及加工工艺条件。     

142例新生儿溶血病血清学检测结果分析

目的对本地区142名新生儿溶血病患者进行血清学检测,评价直接抗人球蛋白试验、游离抗体试验和抗体释放试验在该病诊断中的价值。方法对2005年1月~2007年6月各医院送检的高胆红素血症新生儿血液标本进行"三项试验"。结果142名新生儿溶血病患者中,血型分布规律为:B>A>AB>O,54.22%为B型,43.66%为A型,二者差异有显著意义。直抗试验阳性率为76.76%,释放试验阳性率为100%,游离试验阳性率为50.70%。释放试验阳性的A型患者中,抗-AB检出率为47.17%,B型患者中的检出率为53.03%,二者差异无显著意义。结论释放试验敏感度最高,是判定新生儿溶血病最有力的证据,在本地区,B型新生儿可能更易患新生儿溶血病。     

Dickey–Fuller, Lagrange Multiplier and Combined Tests for a Unit Root in Autoregressive Time Series

In this paper we investigate (augmented) Dickey–Fuller (DF) and Lagrange multiplier (LM) type unit root tests for autoregressive time series through comprehensive Monte Carlo simulations. We consider two sorts of null and alternative hypotheses: a unit root without drift versus level stationarity and a unit root with drift versus trend stationarity. The DF-type coef ficient tests are found to show the best overall performance in both cases, at least if the sample size is sufficiently large. How ever, it is also found that the DF and LM tests are roughly complementary with regard to their finite-sample power. We therefore consider combining these two types of unit root tests to obtain ( ad hoc 'but') 'robust' test procedures. Critical values for the proposed tests are provided     

影响涂层性能测试准确度的因素探讨

通过分析涂料测试过程中必须注意的几个问题,即影响涂料测试结果的几个因素,强调了严格按材料标准、工艺文件和试验方法操作是获得准确可靠检测结果的重要条件。     

Testing for Unit Roots in Monthly Time Series

This paper is concerned with tests for seasonal roots in monthly univariate time series processes. The paper extends the procedures and tables of critical values due to Beaulieu and Miron (Seasonal unit roots in aggregate U.S. data. J. Economet . 55 (1993), 305–28) to obtain tests which are similar ( exactly and a symptotically ) with respect to both the initial values of the process and the possibility of seasonal drifts under the seasonal unit root null hypothesis. We also develop test statistics which test simultaneously for a unit root at each frequency and for a unit root at each of the seasonal frequencies. Representations are derived for the limiting distributions of each of the test statistics proposed in this paper. We illustrate the practical usefulness of the proposed test statistics by a series of empirical applications     

振动磨混合时间对气体发生剂性能的影响研究

研究了振动磨不同研磨混合时间对安全气囊气体发生剂中各组分的混合均匀性和产品一致性的影响,此外,还通过气体发生剂与气体发生器匹配后进行的压力性能测试、火焰试验以及残渣试验,考查了振动磨研磨混合时间对气体发生剂性能的影响,为实际生产中振动磨研磨混合时间的确定提供了一定的参考依据。     

鲎试验检测土霉素注射液中细菌内毒素的方法

通过干扰试验探讨土霉素注射液对细菌内毒素试验的干扰情况和干扰性质,采用凝胶鲎试验对样品中的细菌内毒素进行检测,土霉素注射液在使用λ值为0.25EU·ml-1的鲎试剂时,其最大无干扰浓度为0.625 mg·ml-1,最小无干扰稀释倍数为320倍.所建立方法检查土霉素注射液的细菌内毒素可行.     

有机膨润土的制备

:对自制的有机膨润土做了凝胶实验、触变性实验 ,证明自制膨润土性能达到了国家标准     

不同试验方法对GFRP筋粘结强度的影响研究

基于拉拔和粱式试验，探讨了这两种试验方法对GFRP筋与不同种类混凝土(包括混凝土C30、掺纤维与不掺纤维的混凝土C50等)之间粘结强度的影响。研究表明，梁式试验的GFRP筋粘结强度稍低于拉拔试验的结果；混凝土强度等级以及是否掺加聚丙烯纤维对GFRP筋的粘结强度影响较小。     

无细胞百日咳疫苗中活性PT的保护作用

目的 比较经基因工程方法脱毒的无细胞百日咳疫苗(APV)中不同含量活性PT的保护作用。方法 用小鼠保护性试验(AMPT)评价不同含量活性PT疫苗样品的百日咳效力,组织胺致敏试验(HST)检测不同含量PT样品中PT活性。结果 含5ng活性PT的疫苗与不含PT的疫苗效力差异无显著意义;含50ng活性PT疫苗与不含和含5ng活性PT的疫苗效力差异有显著意义。用HST肛温测定法可以检测到含50ng活性PT的样品中PT活性。结论 AMPT适用于高度脱毒或基因工程脱毒的APV的效力检定,HST肛温测定法可以证实APV中PT的活性。     

Effect of contact at the interface on the compressive properties of fly ash-epoxy composites

Particulate composites based on polymer matrices generally contain fillers, especially those that are abundantly available and are cheaper. The inclusion of these, besides improving the properties, makes the system costwise viable. In the present study, fly ash was tried as a filler in epoxy. The filler particle surfaces were modified using three chemical surface treatment techniques in order to elicit the effect of adhesion at the interface on the mechanical properties of these composites. The compatibilizing of the filler with the use of a silane coupling agent yielded the best compression strength values. Scanning Electron Microscopy (SEM) has been used to characterize and supplement the mechanical test data.     

Cone-and-Plate Shear Stress Adhesive Test

A test geometry is described which will produce a state of essentially pure constant shear stress in an adhesive bond. The adherends are fabricated from two cylindrical elements, one with a convex conical end section and the other with a flat plate end section. The axes of these two cylinders are aligned and the two end sections are bonded together with the test adhesive. The adhesive test volume is a disk with conical indentation. An analysis of the state of stress in the adhesive, with torsional loading of the adherends, shows that a single component of shear stress is present and this shear stress is essentially constant throughout the adhesive volume for small values of the cone angular opening. The advantages of a constant shear stress adhesive test are many and one of the most significant is the ability to accurately measure in-situ material properties. Preliminary test results are reported.