化学反应速率实验的对比分析

化学药品消耗的多少直接影响到实验成本和环境污染。通过增加和减少任何一种反应物的浓度进行实验,并对结果进行分析。结果表明:选择KIO3和NaHSO3的反应,而且固定KIO3的浓度,增加或减少NaHSO3的浓度进行实验是最经济和最环保的。

喷气增焓与喷液冷却式空气源热泵在低温环境下实验数据对比及分析

对喷气增焓及喷液冷却式空气源热泵进行了热力学分析,并在低环境温度下对其制热性能进行了数据测试及对比研究,结果表明,随着室外环境温度在10℃~30℃之间下降时,两款热泵耗电量都在逐渐增加,制热量逐渐降低,喷气增焓空气源热泵机组相较喷液冷却式空气源热泵机组的COP下降有变缓趋势,当室外环境温度为-5℃时,喷气增焓热泵的COP为3.03,而喷液冷却式热泵降至2.66;在-20℃时,喷气增焓式热泵COP为2.15,喷液冷却式热泵COP已降至1.88;喷气增焓空气源热泵比喷液冷却式热泵性能提高大概13%左右。喷气增焓空气源热泵机组在低温环境下效率更高。

SO_2连续与瞬时采样监测的对比实验分析

采用实验对比分析的方法对近几年丹东市环境空气SO2 连续采样值比以前瞬时值低得较多现象进行了全面深入的探讨和研究。结果表明 ,点位从市中心外移、采样方式改变、进气通过不畅通和进气管有水等 ,都影响SO2

压力容器液相流体泄漏实验研究

目前,国内对压力容器液相泄漏理论分析较多,而实验研究较少。为了探寻其实际泄漏规律,建立了实际压力容器泄漏实验模拟系统,并进行了相关实验。数据分析表明,实验数据与理论计算的泄漏规律大致相同,只是泄漏速率的实验数据比理论计算值变化更快。

赤泥在防液态铝侵蚀涂层中的应用

为解决工业废料赤泥的回收利用,以赤泥为主要成分,根据惰性熔膜屏蔽保护机理,以各种氧化物在釉质层中所起的作用为依据,通过大量的筛选实验,选择合理的涂层成分与配比,研制出了一种新型的防液态铝侵蚀的赤泥涂料。通过腐蚀后基体的金相组织图与EDS成分分析、氧化失重对比分析和X射线衍射分析等手段,将所研发涂料与市面上已经投产使用的涂料作对比,发现所研发的涂料具有更好的防护性、稳定性和耐热性,并且原材料都是生活和工业中的废料,实现资源二次开发利用。

Experimental Study on the Dam-Break Hydrographs at the Gate Location

When studying the dam-break flow phenomenon,the basic hydrodynamic features of the dam-break flow at the gate location should be verified primarily.In this study,laboratory experiments were performed in a rectangular and horizontal flume with the same initial water head setting on the dry and wet downstream bed conditions.Water surface elevation was extracted through image analysis and validated by comparing with the data measured using a wave gauge.Temporal variation of the water surface elevation at the gate location,quantified in terms of high-speed video recorded images,can be divided into three stages,the sharp decreasing stage,the relatively steady stage,and the gradually decreasing stage.Applicability of several classic analytical solutions of the dam-break problem at the gate location was validated using present experimental data.Ritter's solution is effective for the dry bed condition while Stoker's solution could be applied to the wet bed case,and both are only applicable during the steady stage.Lin' solution reproduces the gate-site hydrographs well during both the relatively steady and the gradually decreasing stages,especially for the condition under which the down-upstream water depth ratio is smaller than 0.138.

Proficiency Testing in Analysis of Wine Products

The quality variety wines which are produced in specified regions of Slovakia are mostly watched category of wine in European Union. Quality of the measurement for appropriate parameter in wine sample is given by uncertainty. Therefore, protocol of analysis has to have an uncertainty of measurement and should be made in accredited laboratory. In Slovakia, there are six wine growing regions （Tokaj, east Slovakia region, south Slovakia region, middle Slovakia region, Nitriansky region and Little-Carpathian region） where the quality wines with protected designation of origin are produced. Central Controlling and Testing Institute in Agriculture in Bratislava is a state organization, which has an accredited laboratory for testing wine products before introduction into the market. This article presents the results of the authors＇ measurements in proficiency testing FAPAS （food analysis performance assessment scheme） which were organized by Central Science Laboratory in York （England） in 2011. The authors add also interlaboratory comparison in 2012 between Slovak accredited laboratories. The results show very good agreement. Quality control in the wine sector presents very important feature in the market, therefore, using certified reference materials and checking the accredited laboratories with interlaboratory comparisons is very helpful. Testing of wine in the authors＇ laboratory is performed by EN ISO/IEC： 17025. The results show that z-score lies not outside the range ±2 and this is a chance that the authors＇ results are actually acceptable.

吸附无细胞百白破联合疫苗中白喉类毒素的质量分析

目的:对成都生物制品研究所有限责任公司2007-2013年生产的吸附无细胞百白破联合疫苗中白喉类毒素的原液和成品的关键质量属性进行分析。方法:建立了白喉类毒素趋势分析和实验室间对比分析的方法。结果:及时发现了白喉类毒素的质量和生产过程中发生的问题及偏差,确定了产生问题和偏差的影响因素。结论:证明了成都公司白喉类毒素生产和检定过程的稳定性,白喉类毒素的质量是稳定的。