聚乙二醇-400催化合成橙花醚的研究

研究了利用多种相转移催化剂在不同条件下合成橙花醚。结果表明：采用聚乙二醇 ４００（ＰＥＧ ４００）为催化剂，当β 萘酚：溴乙烷：催化剂＝１：１２：００７（摩尔比）、温度为７６℃、反应７ｈ时，产率可高达９８１％。     

13X沸石吸附处理水中苯胺的性能及应用

用天然岩石矿物为原料，经过较简单的工艺过程合成13X沸石去除水中苯胺，模拟废水的实验结果表明：沸石对苯胺的吸附速率非常快，吸附时间为10min时，吸附基本达饱和；一般当沸石用量为10g/L时，水蝇苯胺的吸附率达95％，随着pH值的增加，苯胺在沸石上的吸附率较小；温度增加，吸附率有所增加。但常温下，苯胺的吸附率也能达到93％，13X沸石对苯胺的最大吸附量可达10mg/g，其吸附规律较好地符合Freundlich吸附等温式，饱和了苯胺的沸石，用质量分数为20％，温度为60℃的氯化钠溶液洗脱，解吸率近于100％，且解吸后的沸石在未经任何处理的情况下仍能吸附苯胺；对实际苯胺废水的处理结果，也表明13X沸石不仅可有效地去除苯胺，还可以有效地去除废水中的SS，CODCr，氨氮及油等。     

变精度软粗糙集

从集合间的包含程度出发,构造了一种基于包含度的变精度软粗糙集模型。提出带参数的变精度近似算子的定义,得到了它的基本性质和定理,并给出了证明;定义了双精度软粗糙集的近似算子,研究了其性质;讨论了该模型与其他粗糙集模型的关系以及退化条件;举例说明了在信息处理中的应用。     

基于敲击声振法的风机叶片脱层检测系统设计

脱层是风机叶片的主要损伤形式,根据风电叶片的材料特性及外形特点,分析和研究了敲击声振检测原理和现场检测的可行性。叶片出现脱层时,缺陷处刚度下降,敲击应力持续时间增大。依据此检测原理,计算出合理的等效锤头质量,利用压电薄膜作为动态冲击力传感器进行了力锤的结构设计;利用FPGA设计了便携式检测仪,对敲击信号进行信息提取和处理,计算敲击力脉冲信号的宽度,具有结果图形显示和串行通信的功能。经过实验,验证了脉冲宽度与损伤深度的关系。     

一种基于感声波纹结构的光学式声传感器

设计了一种基于硅MEMS敏感结构的光学式声传感器,其光学调制原理采用强度调制型,微敏感结构采用具有低应力波纹结构的感声薄膜芯片。对光纤与微敏感结构耦合技术进行实验研究,优化光学参数,并制作传感器样品。经实验测试,灵敏度达80mV/Pa。     

Adhesive Bonding of Oil-Contaminated Steel Substrates

Durability of adhesive bonds formed by curing epoxies against oil-contaminated steel substrates using amidoamine curing agents was determined during exposure to boiling water. The most durable bonds were obtained using amidoamine curing agents with relatively low amine numbers and by blending silane coupling agents such as γ-glycidoxypropyltrimethoxysilane (γ-GPS) and N-(2-aminoethyl)-3-aminopropyltrimethoxy silane (AAMS) into the adhesives. When X-ray photoelectron spectroscopy (XPS) was used to characterize the failure surfaces of the adhesive joints after exposure to boiling water, it was determined that adhesives prepared using amidoamine curing agents with low amine numbers were able to displace the oil from the steel surface but adhesives prepared with amidoamine curing agents with high amine numbers were not. Results obtained from XPS also showed that the amino groups on the substrate fracture surfaces of joints prepared using curing agents with low amine numbers were protonated whereas the amino groups in the bulk adhesive were not, indicating that there was a chemical interaction between the curing agent and the hydrated surface of the substrate. It was also shown using infrared spectroscopy that the amidoamine curing agents formed salts with calcium compounds in the oil.     

我国腈纶市场现状分析及启示

分析了我国腈纶生产市场现状和未来的应用领域，结合世界发展动向，提出了发展我国腈纶生产的建议。     

宽带脉冲法水声管测试软件的设计与实现

依据基于逆滤波原理的宽带脉冲法测试方法,编写了基于LabWindows/CVI的宽带脉冲法水声管测试软件。软件利用VISA函数库和SCPI语言,实现对仪器的程序控制,达到"软件即仪器"的目的。采用ActiveX技术,实现对Matlab和Excel程序的调用,充分发挥Matlab强大的数值分析和计算的功能,并实现了Excel报表的输出。经试验验证,该软件系统在满足测试精度的前提下,可节省人员操作时间,提高测试效率,满足水声管测试系统的实际需求。     

Efective Object Identification and Association by Varying Coverage Through RFID Power Control简

This paper presents an effective power scheduling strategy for energy efficient multiple objects identification and association. The proposed method can be utilized in many heterogeneous surveillance systems with visual sensors and RFID （radio-frequency identification） readers where energy efficiency as well as association rate are critical Multiple objects positions and trajectory estimates are used to decide the power level of RFID readers. Several key parameters including the time windows and the distance separations are defined in the method in order to minimize the effects of RFID coverage uncertainty. The power cost model is defined and incorporated into the method to minimize energy consumption and to maximize association performance. The proposed method computes the power cost using the range of the outermost position for possible single association and group associations at every sampling time. An RFID reader is activated with the proper coverage range when the power cost for the current time is lower than the power cost for the next time sample. The simplicity of the power cost model relieves the problematic combinatorial comparisons in multiple object cases. The performance comparison simulation with the minimum and maximum energy consumption shows that the proposed method achieves fast single associations with less energy consumption. Finally, the realistic comparison simulation with the fixed range RFID readers demonstrates that the proposed method outperforms the fixed ranges in terms of single association rate and energy consumption.     

磷对饮用水中细菌再生长影响的研究

根据不同成分的水样中细菌再生长情况,研究了水中磷对生物稳定性的限制因子作用。结果显示,在测试水样中添加1 mg/L的NaAc后,细菌总数增加了100%-187%;在水样中添加15μg/L的NaH2PO4后,细菌总数增加了180%-203%。随水样中PO43-P含量的增加,细菌数目也在逐渐增加,但当水中PO43-P的含量大于等于5μg/L时,细菌已无明显增长趋势。试验结果表明磷和碳一样也是水中微生物生长的限制因素之一,并且对于该水样当PO43-P的含量为2μg/L—5μg/L之间的某个值时,磷的限制作用将会表现出来。