75系列塑钢推拉窗的性能特点及安装施工

阐述了７５系列塑钢推拉窗的特点和性能介绍了该窗的安装施工。     

Interactions of 1 μm latex particles with pseudomonas aeruginosa biofilms

Fluorescently labelled latex microbeads were used to study the interaction of particles with Pseudomonas aeruginosa biofilms in a continuous flow annular reactor. Beads were readily distinguished and enumerated in both intact and disaggregated biofilm samples. The fraction of beads that attached to biofilm during a 24 h period ranged from 0.001 to 0.01 and was proportional to biofilm cell carbon and to the standard deviation of biofilm thickness. Microbeads added to biofilm of steady state thickness (30 μm) were observed to be located throughout the entire biofilm depth in 24 h. Many of the microbeads that attached to biofilm shortly after bacterial inoculation (thickness of 2 μm) remained near the substratum as cells grew past and covered them. Microbeads were observed near the biofilm-substratum interface for up to 5 days after bead addition. Beads formed aggregates on biofilms, but not in bulk water. Beads captured by biofilm remained in the reactor system longer than beads that never attached to biofilm.     

云驾岭煤矿无烟煤的动态本构模型研究

大直径霍普金生压杆试验表明：云驾岭煤矿无烟煤的动态本构曲线具有显著的塑性屈服特征，初始弹性模量Eb、屈服强度σs与极限强度σb都随着应变率的增加而提高，但屈服强度最为显著。根据试验曲线的特征，在对既有岩石动态本构模型进行分析和初步的拟合后，引入一个新的损伤型黏弹性本构模型，以1根线性弹簧和2个不同松弛时间的Maxwell体并联的黏弹性模型表达无烟煤显著的塑性流动，2个Maxwell体分别表示无烟煤的低应变率响应和高应变率响应，以动态应力-应变曲线任-点与原点连线的斜率E（εi）相对于初始模量Eb的降低来度量损伤D。模型的数值拟合曲线与实测动态本构曲线具有较好的一致性。拟合参数表明，无烟煤对低应变率的响应与混凝土相同，对高应变率的敏感性远远高于混凝土。     

Cu, Cr and As distribution in soils adjacent to CCA-treated utility poles in Eastern Blacksea Region of Turkey

In this study, the main objective was to asses the distribution of Cu, Cr, and As in soils adjacent to CCA-treated utility poles in Eastern Blacksea Region of Turkey (Trabzon, Rize and Artvin ) and determine the influence of soil composition.

Surface (0–5 cm) and subsurface soil samples (30–40 cm) were collected near CCA-treated utility poles and control soil samples away from CCA-treated utility poles were also collected. Water holding capacity, pH and mechanical properties of soil samples were determined for both depth levels.

Results showed that Cu, Cr and As concentration in soil samples taken from all three cities in 0–5 cm depth was higher than soil samples taken from 30–40 cm depth. Cu, Cr and As concentrations were much higher in soil samples taken from city of Rize     

玻璃性质计算软件的开发

使用瀑布模型,借助语言,开发出能够计算各种玻璃性质的计算软件。在VCWlN98上,该软件通过实例运行计算,不仅窗口界面清楚,具有联机帮助功能;而且计算包含的内容全面,计算结果准确。     

PU/SBR复合改性沥青及混合料性能研究

为了改善SBR改性沥青的高温性能及体系稳定性、提高聚氨酯(PU)改性沥青的低温性能,将PU与SBR复配对基质沥青进行改性,对PU/SBR复合改性沥青及其混合料的性能进行了评价。结果表明:PU/SBR复合改性沥青兼具良好的高低温性能,3.5%SBR+0~6%PU和4.5%SBR+0~8%PU复配方案下的PU/SBR复合改性沥青,低温PG分级达到-24℃,推荐适宜的PU掺量为4%~6%、SBR掺量为3.5%;3.5%SBR+6%、4%PU和6%PU改性沥青混合料具有优良的高温稳定性和水稳定性能,与5%SBS改性沥青相比,PU/SBR复合改性沥青混合料的动稳定度对试验温度的敏感程度更低。     

白云质石灰岩-水玻璃灌浆材料的性能及其反应机理

研究了白云质石灰岩-水玻璃灌浆材料的性能和影响因素 ,结果表明 :这种灌浆材料粘度较小 ,流动性好 ,可实现单液灌浆 ,凝固时间在 5～ 2 0h可调节 ,稳定性好 ,结石体强度和固砂强度达 1～ 3MPa。液固比或水玻璃浓度、养护温度和湿度、石灰岩颗粒细度、不同工艺路线是影响浆材性能的主要因素。还探讨了白云质石灰岩-水玻璃灌浆材料的反应机理。     

Evaluation of alternative sludge settleability indices

Proposed modifications of the standard sludge volume index (SVI) to eliminate its unpredictable variation with suspended solids (SS) concentration include stirring, conduct of the test at constant SS concentration, and dilution. We have tested these modifications by making correlations between the respective indices and the content of filamentous organisms in activated sludge expressed in terms of total extended filament length. The results indicate that diluted SVI is the best index of sludge settleability among those tested. Correlation of diluted SVI with specific functional relationships between settling velocity and SS concentration would enable the application of this parameter to prediction of thickening capacity in secondary clarifiers.     

高品质再生骨料的生产及基本性能试验研究

为了提高再生骨料的品质,提出了一套高品质再生骨料生产工艺,与目前常规的再生骨料生产工艺相比,增加了机械磨损(干拌)和水冲洗两个流程.测试了利用新工艺生产的再生骨料的基本性能,并与天然骨料和常规再生骨料工艺生产的再生骨料进行了对比.结果发现,与常规工艺生产的再生骨料相比,新工艺生产的再生骨料品质显著提高,主要表现在密度增加、废旧水泥砂浆含量和吸水率降低、坚固性增加等.进一步研究了利用新工艺生产的高品质再生骨料混凝土的抗压强度,发现其与相同条件下普通混凝土差别不大.     

氟化镓—铟系统玻璃性质研究

制备了一组氟化镓铟系统玻璃．用差热分析测定了玻璃的各特征温度，计算了其稳定性判据值，发现ＩｎＦ３的引入使玻璃中出现了“混合效应”，提高了其稳定性．用红外光谱测定了各玻璃的红外截止波长，分析讨论了ＩｎＦ３含量变化对玻璃红外透过性质的影响．研究了玻璃密度和折射率等物理性质随成分变化的规律．结果表明：氟化镓铟玻璃具有较好的稳定性和较宽的红外透过范围；合理的玻璃组成能进一步改善其物理性质．