采用温控和碘吸收池技术的发射激光稳频技术

多普勒测风激光雷达通过分析系统回波信号的多普勒频移反演出风速，为提高风场探测精度，从稳频技术方面展开研究。在稳频过程中，分别采取措施消除激光频率的长期漂移和短期抖动。针对激光频率的长期漂移，设计并研制了种子激光器温控箱，通过水浴的控温方式大大减小了激光频率的长期漂移，将激光频率稳定在±50 MHz以内；针对激光频率的短期抖动，采用以碘分子吸收池为核心器件的稳频系统，通过半导体控温方式对碘分子吸收池精确控温，控温精度达0.03 ℃，提高了稳频精度，将激光频率进一步稳定在±8 MHz以内，满足±10 MHz以内的设计精度要求。通过搭建多普勒测风激光雷达系统，对发射激光稳频装置进行系统验证，连续4组风场观测结果表明:系统探测高度为17 km，绝大部分方差在4 m/s以下，满足测风激光雷达测量指标的要求。     

含吡啶配位聚合物结构对合成温度的不敏感性

采用有机碱吡啶(pyridine)代替常见的强碱(如氢氧化钾或氢氧化钠等)调节反应混合物的pH值,探究水热温度对配位聚合物结构的影响。分别以2,5-二甲基对苯二甲酸和间苯二甲酸(以下简称H2dmbdc和H2ip)为配体和硝酸锌通过水热合成配位聚合物[Zn3(dmbdc)3(py)2]n,1和[Zn4(H2O)(ip)4(py)6]n,2。研究发现,在较大的合成温度范围内(120℃~210℃),得到的配位聚合物结构也都不会随水热合成温度的改变而改变。由此表明当有吡啶参与反应时,配位聚合物的结构对水热温度具有一定的不敏感性。     

AAO as a new strategy in modeling and simulation of constructional problems optimization

The article presents a new multi-criteria optimization method called Artificial Acari Optimization (AAO). AAO method was tested with five well-known benchmark structural problems i.e.: welded beam, pressure vessel, speed reducer, spring design and gear train problem. The results were compared on other representatives of Swarm Intelligence mainstream which are bee algorithms MBO, BCO and ABC. Numerous references show dominance of ABC over MBO and BCO. To check this, a detailed comparisons of AAO results were made and introduced together with the results of the ABC algorithm.     

Experimental study on the thermal properties of the phase change material wall formed by different methods

The thermal properties of the shape-stabilized phase change material walls with different structure were studied. The phase change material is composed of paraffin mixture and high-density polyethylene. The walls including concrete and shape-stabilized phase change material were prepared respectively by different methods. Preparation methods include direct mixing method and lamination interpolation method. Heat transfer process in the shape-stabilized PCM walls was studied by comparing with traditional wall. The results showed that the surface temperature and the heat flow through the phase change material walls prepared by different methods are lower than that of traditional wall and the change is small. Energy-saving effect of the shape-stabilized PCM walls prepared by lamination interpolation method is better than that of the shape stabilized PCM walls by direct mixing. Results in this paper can provide the basis for the application of the shape stabilized PCM walls in the buildings.     

CB／A14型低噪声内啮合齿轮泵结构分析

以CB／A14型内啮合齿轮泵为研究对象，详细讨论了该齿轮泵的齿轮结构特点，主要包括齿轮材质选择、结构确定和齿轮参数的选择。最后还介绍了CB／A14的流量脉动与密封情况。理论研究和实际应用表明，该泵承载能力大、效率高、工作噪声低，具有很好的发展前景。     

手持数控编程/仿真器设计

介绍一种具有数控加工程序编辑、编译、存储、通讯和仿真等主要功能的手持式数控编程/仿真器设计方法.编程/仿真器内含国际标准GM代码,采用7×8按键矩阵、LCD显示和USB接口设计,通过显示加工轨迹可对加工程序进行验证调试.给出系统的硬件组成和软件设计,利用Proteus+KeilC实现联合仿真.结果表明:该编程/仿真器运行可靠,使用方便,适用于数控车床加工和高校数控教学培训,具有推广价值.     

基于MCGS的退火窑集散式测试系统研究

以基于MCGS的退火窑集散式测试系统的搭建过程为例，详细的论述了MCGS工程组态软件工程组态的过程。最终实验结果表明了该方案的有效性和正确性，并具有实际的应用价值。     

Preparation and characterization of the system SiO2-CaO-P2O5 bioactive glasses by microemulsion approach

The system of SiO₂-CaO-P₂O₅ bioactive glasses (BG) were successfully synthesized by microemulsion approach. X-ray diffraction (XRD),scanning electron micro scopy(SEM) and energy dispersive X-ray (EDX) analyses, transmission electron microscopy(TEM),Fourier transform infrared spectroscopy (FTIR), BET N₂ gas adsorption analysis techniques were utilized in order to evaluate the phase composition, dimension, morphology, interconnectivity of pores and particle size of the synthesized BG respectiveely. The biocompatibility of BG was assessed by using dimethylthiazol diphenyl tetrazolium bromide (MTT).The BG scaffolds were implanted in rabbit mandibles and studied histologically. The results showed that the BG with a particle size less than 100 nm was prepared successfully. The measured BET specific surface area and pore volume was 113.9 m²/g and 0.28 cm³/g respectively. Cell cultures revealed that BG has been shown to have good biocompatibility and is also beneficial to the survival of Schwann cells, which can promote cell proliferation in vivo assay indicating that the BG can promote osteoconductivity.     

六安市居民饮用水氟含量及改水工程现状调查与分析

通过筛查六安市居民饮用水中氟含量及改水工程现状表明,六安市五县三区居民饮用水中氟含量均值较低,仅为0.36mg/L,合格率达99.57%,舒城县饮用水中氟浓度最高,氟最高浓度达5.14 mg/L;六安市金安区饮用水氟含量超标率最高,达0.64%,其次是寿县,而金寨县和叶集区饮水中氟含量合格率最高,达100%;70个改水点引水主要方式是引水和打井,引水中氟含量均达到国家生活饮用水卫生标准;居民饮用水中氟含量过高现象已得到改善,但要及时采取措施预防龋齿;本次调查与分析结果可为六安市地方性氟中毒防治、地氟病区改水提供科学依据。