Morphology of polar ionospheric O^＋ ion upflow： FAST observations during quiet time

With energetic ion measurements on FAST satellite, the morphologic features of quiet-time ionospheric O ion upflowing at altitudes of 2000 to 4000 km are drawn out for the first time. The pre-noon cusp/cleft is the predominant region of upflowing occurrence for O with lower energy. Meanwhile the pre-dawn sector near the equatorward edge of the plasma convection dominates the occurrence for the higher energy O ions. No matter whether the energy is lower or higher, the upflows occur often over a wide MLT range of lower latitudes outside the auroral oval. The upflowing within the pre-midnight (21:00― 22:00 MLT) auroral oval carrys larger energy fluxes, with extremely large fluxes for higher energy O appearing near the polar cap boundary. For altitudes of 2000―4200 km under observation, the ion conics occur much more frequently than ion beams. Ion beams are rarely found below 3000 km, while the conics occur uniformly over the observed altitudes.     

区域前兆台网的管理

简要介绍了广东前兆台网“十五“项目的部署情况。根据国家地震前兆台网中心的工作要求,制定了相应的区域前兆台网中心和台站的规章制度,对中心和台站进行规范化管理。该工作仍在不断改进和完善中,目的是要按质、按量、按时地提供前兆数据。     

头孢噻肟钠在水-异丙醇中的液固平衡测量与关联

为考察头孢噻肟钠结晶过程的晶型转化现象以及提供基础热力学数据，采用激光测示法测定了278．15K到308．15K之间B晶型头孢噻肟钠在异丙醇-水二元溶剂体系（溶剂组成：异丙醇摩尔分数为0．05—0．68）中的溶解度．在异丙醇-水二元溶剂中B晶型头孢噻肟钠的溶解度随温度升高而增加，随溶剂组成中异丙醇含量提高而下降，实验数据采用半经验方程进行关联，拟合结果与实验数据吻合良好．所测定的溶解度数据与关联模型可以作为基础热力学数据和模型在生产实践中应用．     

Meteorological observations on Mount Everest in 2005

Mount Everest,the highest point on the Earth is often referred to as the earth's third pole as such the place is relatively inaccessible and little is known about its meteorology.In April 2005,an automatic weather station was installed at the mountain's North Col(6523 m a.s.l.).According to the observational 10-minute mean and daily records,the meteorological characteristics were analyzed. All the meteorological elements displayed obvious diurnal variations during May 1 to July 22,2005.The monthly variation of daily meteo- rological elements on Mount Everest coincided with that on Dingri,the closest routine meteorological station,with the high correlation co- efficients of 0.928,0.877,0.682,0.755,0.826 and 0.676(n=83,p<0.001)for mean temperature,minimum temperature,max- imum temperature,relative humidity,pressure and wind speed,respectively.Furthermore,the vertical mean gradient of temperature was above 0.6℃/100 m,especially for the daily maximum temperature.Most weather events on Mount Everest prominently appeared on the same day as those on Dingri,especially those from daily mean pressure,temperature and relative humidity with the cross-correlation coeffi- cients of 0.673,0.485 and 0.487(n=83,p<0.001),respectively.Some other weather events on Mount Everest lagged one-day be- hind those on Dingri.Furthermore,forecasting of the weather events on Mount Everest from pressure on Dingri was more reliable than those from the other meteorological elements.The conclusions are much important for research on meteorology and climate changes in the region.     

浅析某果汁厂成品罐沉降观测及加固方案

采用仪器设备对成品罐体进行沉降观测,并根据观测结果确定加固处理方案,为相关工程的检测加固提供一定的借鉴。     

区域观测与地理实在

讨论了地理研究中“观测”与“实在”的性质和联系，针对区域的性质提出了不同的观测方法。     

谈高层建筑的沉降观测

根据笔者在高层建筑施工过程中沉降观测的应用,对高层建筑施工过程中沉降观测的工作进行了论述。     

浅析物理实验中的误差

物理实验中有一些产生误差的因素是不可避免的，我们应对测量结果误差进行估计，并采取措施减小测量误差。     

相对论中物体运动的表观现象

阐明了相对论中“测量”与“观察”两个不同的概念，论述了高速运动秩本的视觉现象，从而澄清了洛仑慈收缩是一种观察效应的误解。     

车载电子设备空间定位系统

本文推导了一套车载卫星跟踪设备空域稳定的数字两轴控制算法,该系统可以在车体行进过程中保持对卫星的跟踪。通过控制天线的方位、俯仰,使其波束中心始终对准指定的卫星系统,从而达到转播声音或图像的目的。