羟基磷灰石晶须的控制合成与机理探讨

采用均相沉淀法控制合成了羟基磷灰石（HAP）晶须，并采用SEM、FT-IR和XRD对样品进行了表征，从晶体热力学性质和晶体生长动力学两个方面分析了模板对羟基磷灰石晶须形貌的影响，探讨了羟基磷灰石晶须的生长机理．     

基于GFS-Net的动态复制

GFS-Net是一种新的DHT覆盖网络。本文介绍了GFS-Net的拓扑结构,并完善了其搜索算法,提出了与GFS-Net相适应的动态复制算法,它包括两个部分：（1）根据文件的请求频率增减副本数目;（2）根据下裁性能较低的站点的分布确定新增副本的位置。该算法可以根据副本的请求频率和分布,动态调整副本的数目和分布,平衡各个站点的负载,降低用户下裁文件的响应时间。     

ROBOT PROGRAMMING BY DEMONSTRATION FOR TASK IN CONTACT STATE

Robot programming by demonstration (PUD) system for task in which object requires contact with environment is built based on the controlling skill model. The skill is described in three aspects: contact state classifier, acquirement of contact states sequence and controlling transition between states. The classifier is developed with the support vector machine by using force sense. Sequence of states is obtained from the force signal of demonstration by the event trigger. The velocity command of transition is achieved by linearization method. The PBD system is successfully built with robot controller with open architecture.     

FAGOR 8055B/M数控系统在大型激光热处理设备中的运用

介绍了该激光加工设备的运用现场，简单描述了FAGOR 8055B／M数控系统及在该设备所要实现的功能，重点介绍FAGOR 8055B／M在现场的调试，最后总结了该数控系统的优点及该设备带来的效益。     

“环境化学”课程教学方法探讨

在教学实践的基础上，提出在“环境化学”的课程教学中应该首先让学生明确环境化学在专业学习中的重要地位，在讲授过程中注意“环境化学”与其它化学课程在内容上的差异和联系，将基本内容和前沿问题相结合，采用互动式教学，提高教学质量。     

SiO2／HAP晶须复合粒子的原位有机杂化（Ⅰ）——在PP中的应用

采用溶胶沉积法将HAP晶须加人到硅酸钠中．制成水性悬浮液，在酸性介质中，硅酸盐发生水解一缩合反应，使生成的溶胶沉积在HAP晶须粒子表面上，从而制备出具有壳一核结构的SiO2／HAP晶须复合粒子；在体系中引人亲油性诱导剂和有机改性剂，对该复合粒子进行原位有机杂化．将经上述表面改性的复合粒子作为填料填充到PP中，对其进行改性．实验表明：填充量为30％时，壳-核比为20％的SiO2／HAP晶须复合粒子为最佳填料；壳-核比为20％的SiO2／HAP晶须复合粒子为填料时，最佳填充量为20％～30％．     

Performance of MODIS aerosol products at various timescales and in different pollution conditions over eastern Asia

High-quality aerosol optical depth(AOD) data derived from MODIS is widely used in studying spatiotemporal trends of fine particulate matter(PM_(2.5)) concentrations in eastern Asia. However, the differences of MODIS-AOD(3/10 km DT; 10 km DB)under four pollution situations(No-Po; Sl-Po; Mo-Po; Se-Po) are rarely considered. In this study, the MODIS-AOD and AODDifference spatial distributions from 2008 to 2017 are analyzed through annual/seasonal mean AOD maps generated at 0.1°×0.1° resolution. The MODIS-AOD performances are validated using AERONET AOD data for various pollution situations and aerosol types. Annual validations indicate that the 10-km DB algorithm provides the best performance, followed by 3-km DTand 10 km DT. The DB algorithm can provide spatially continuous AOD data for all seasons, whereas the DT algorithm often fails to yield valid data during winter. The validations under different pollution conditions illustrate that severe pollution significantly affects the validity of data obtained by the DB algorithm. However, the accuracy of DT-derived AOD data is robust against interference. Under the same pollution conditions, the correlation coefficient of the DB algorithm is smaller than that of the DT algorithm. The quantity of valid data in the DB product is higher than those in DT products for all pollution conditions, especially under Se-Po.