基于DSP的空间相机像移速度计算的研究

为了精确匹配地物运动在空间相机像面产生的像移,实现了以WGS-84坐标系下航天器位置向量及速度向量,航天器轨道坐标系下姿态角及姿态角速率作为输入参数的像移速度计算方法。首先,在原有像移速度计算模型的基础上选取了惯性坐标系,降低了求解轨道倾角和降交点经度的复杂性。并通过球面几何的余弦定理直接求解航天器与降交点相对地心夹角的余弦值,避免了原像移速度计算模型中通过判断卫星飞行方向和星下点纬度来求解航天器与降交点相对地心夹角的余弦值的过程。接着,将星下点的经度和纬度与FLASH地址有机的联系在一起,避免了访问高程数据时繁琐的查表过程。然后,通过分析像移速度残差对相机MTF的影响,评估了像移速度计算模型的可行性。最后,在TI的DSP上实现了像移速度计算的整个过程。分析及实验结果表明,像移速度计算残差为1.5‰,引起的相机MTF下降为1％,像移速度计算时间小于2ms。满足空间相机对像移速度的计算精度和计算时间的要求。     

大民屯凹陷沈84-安12区块Es_3层序地层格架及砂体分布规律

辽河油田沈84-安12区块为一复杂断块油田,目前已进入开发中后期的高含水阶段。在经典层序地层学理论以及成因地层学分析方法指导下,依据高分辨率层序地层学原理,利用沈84-安12断块内钻井、测井、地震等资料,准确识别出研究区钻井、地震层序界面、湖泛面和基准面升降旋回等层序标志特征,并研究了基准面升降与砂岩分布规律的关系。研究认为:在A/S<1的情况下,砂体往往呈现出接触紧密的带状;而当A/S>1的情况下,沉积区往往呈现砂体不太发育,规模不大,砂体接触面积小,尤其是当A/S很大时,常会出现孤立式的砂体。进一步证实了高分辨率层序地层学在油田开发中的广泛应用前景。     

Glued detectors for the CRESST-II experiment

The Cryogenic Rare Event Search with Superconducting Thermometers Phase II (CRESST-II) at the L.N.G.S in Italy is searching for Dark Matter using low-temperature calorimeters. These detectors allow to discriminate different particles by simultaneous measurement of phonons and scintillation light. The sensors used consist of superconducting tungsten thin-film thermometers, which measure the thermal effect of the phonons created in an attached absorber crystal. It has been observed that the scintillation of the CaWO₄ absorber degrades during the process of depositing the tungsten film. In order to prevent this, a new technique for producing the detectors was investigated. This technique might also be valuable by expanding the range of scintillator materials suitable for producing a Dark Matter detector.     

沈84-安12块沙三段高凝油油藏储层特征研究

沈84-安12块沙三段高凝油油藏具有储层认识不清、油藏开发动用难度大的问题,开展储层特征研究,对于该类油藏转驱开发、提高效益化具有重要意义。针对该类油藏的储层特点,从储层岩石学特征、储层储集空间类型、储层物性等方面,系统分析了该区块的储层发育特征,并对其进行分类评价分析储层主控因素,为下一步区块转换开发方式,提高油藏采收率奠定基础。     

CORS-RTK测量中的坐标转换方法探讨

通过对常用坐标系统和网络RTK常用坐标转换方法进行介绍,结合昆明市连续运行GPS参考站（KMCORS）坐标转换的具体实例,对网络RTK测量中的坐标转换方法进行了探讨,并得出了一些有益的结论。     

Effects of minor Sr,Sn and Sc addition on as-cast microstructure and mechanical properties of ZA84 magnesium alloy

The effects of minor Sr, Sn and Sc addition on the as-cast microstructure and mechanical properties of the ZA84 magnesium alloy were compared. The results indicate that addition of 0.1%Sr, 0.5%Sn or 0.3%Sc (mass fraction) to the ZA84 alloy can refine the grains of the alloy. Furthermore, addition of 0.1%Sr to the ZA84 alloy does not obviously change the morphology and distribution of Mg32(Al,Zn)49 phase. However, addition of 0.5%Sn or 0.3%Sc not only refines and modifies the Mg32(Al,Zn)49 phase but also suppresses the formation of Mg32(Al,Zn)49 phase, especially with the addition of 0.3%Sc. Furthermore, addition of 0.1%Sr, 0.5%Sn or 0.3%Sc to the ZA84 alloy improves the tensile properties at room temperature and 150℃, especially with the addition of 0.1%Sr and 0.3%Sc. However, addition of 0.1%Sr is not beneficial to the creep properties, and addition of 0.5%Sn has no obvious influence on the creep properties. Oppositely, addition of 0.3%Sc to the ZA84 alloy greatly improves the creep properties.     

基于ARMS3C2410与EPM7128的虚拟数字存储示波器设计

为解决传统示波器功能单一,不能存储、再现、分析和处理波形等问题,设计了基于ARMS3C2410与复杂可编程逻辑器件(CPLD)技术的虚拟数字存储示波器.由数据采集卡和运行于PC机上的应用测试程序组成,主要以ARMS32410和CPLD-EPM7128SLC84为控制核心,采用高速A/D转换芯片AD9283和快速缓存存储器FIFO设计数据采集卡,通过USB总线实现与PC杌通信;运用LabVIEW软件开发虚拟示波器的控制面板及应用程序.经过实验验证,各模块实验结果均较为理想,满足设计要求.     

基于PIC16F84的电磁阀式IC卡水表设计研究

利用现代化智能技术对自来水供应实行自动监控,不仅是适应国家用水制度的改革的需要,而且是解决供水部门抄表收费过程中所存在系列问题的内在要求。研究开发的电磁阀式Ic卡水表能够满足上述功能要求。其硬件电路的核心部件是PIC16F84可编程单片机芯片,并配置有阀门、流量传感器、Ic卡读／写器等外部元件。软件设计上实现了控制、显示及报警等功能,芯片具有数据可擦写次数多、数据保持时间长等优点。应用该产品可以把即时用水即时付费变成现实,改变了先用水后收费的不合理现状,有利于公用事业的发展。     

Carbon tubular membranes from nanocrystalline cellulose blended with P84 co-polyimide for H2 and He separation

In this study, carbon tubular membranes were produced by employing P84 co-polyimide as a precursor material and nanocrystalline cellulose (NCC) as an additive. The synthesized NCC which was derived from recycled newspaper was used as a pore forming agent for the membrane. Various carbonization temperatures (600, 700, 800, and 900 °C) were used while the stabilization temperature was kept at 300 °C. The measurements of pure gases' (He, H₂, and N₂) permeance through all carbon tubular membranes produced were carried out at feed pressure of 8 bars. The results showed that higher carbonization temperatures resulted in more selective but less productive carbon membranes. The outcome of this study suggested that carbon tubular membrane fabricated from NCC blending with P84 co-polyimide as a promising candidate for H₂ and He recovery application with H₂/N₂ and He/N₂ selectivity of 434.68 ± 1.39 and 463.86 ± 8.12, respectively.     

杜84块超稠油油藏蒸汽+CO2+助剂吞吐物理模拟实验研究

在模拟辽河油田杜84块超稠油油藏蒸汽吞吐条件下(原始地温38℃,原始地层压力7.35 MPa,注汽压力18 MPa,注汽温度260℃,蒸汽干度75%),以孔隙度27.6%～29.1%、渗透率1.3 μm2、φ5×100(cm)的油层砂填充管为物理模型,实验考察了九个周期的蒸汽吞吐、蒸汽+CO2吞吐、蒸汽+CO2+助剂吞吐的驱油效果.后两种吞吐方式的第一周期为蒸汽吞吐,从第二周期开始先注入CO2气或0.0035 PV 0.3%助剂溶液+CO2气再注蒸汽,CO2注入量为前一周期蒸汽注入量的1/5,所用助剂为高温泡沫驱油助排剂WZ-AS+磺酸盐助排剂EOR-CL/LH-ⅩⅢ(1∶1).列表给出了各周期注汽量、采油量、采出程度、回采水率、采注比及油气比数据.三种吞吐方式的生产规律相同,增注CO2和CO2+助剂使周期注汽量、采出程度、回采水率增加,在蒸汽吞吐、蒸汽+CO2吞吐、蒸汽+CO2+助剂吞吐中,累积采出程度分别为30.23%、35.90%、38.69%,周期平均回采水率分别为63.80%、71.62%、82.07%.简介了杜84块油藏特征.图3表4参4.