99Tcm-葡萄糖二酸亲肿瘤显像剂的动物实验

选用＾９９Ｔｃ＾ｍ－葡萄糖二酸（＾９９Ｔｃ＾ｍ－ｇｌｕｃａｒａｔｅ,简称＾９９Ｔｃ＾ｍ－ｇｌｕ）作为肿瘤阳性示踪剂,对肺腺癌小鼠模型进行动物实验,以主要组织器官的放射性摄取百分比及Ｔ／ＮＴ作为统计指标并常规静态及延时显像观察。     

110 kV GIS设备在金河水电站的应用

西藏金河水电站采用GIS全封闭组合电器，它改善了恶劣环境对电气设备的危害，提高了供电的可靠性及电站综合自动化水平，有利于运行管理。GIS设备在金河电站的成功应用说明，GIS完全可以在西藏地区推广应用．这也完全符合电力行业的发展趋势。     

Performance Analysis of Full-Duplex Vehicle-to-Vehicle Relay System over Double-Rayleigh Fading Channels

Mobile Networks and Applications - In this paper, we study the performance of a full-duplex (FD) relay system in vehicle-to-vehicle (V2V) communication. In this relay communication system, the...     

A Study on NMR and GC/MS Spectra of the Isomers of Linear Hexyl Naphthalene

The GC/MS and NMR analysis of the reaction products of naphthalene with 1-bromohexane were reported. The products obtained were suggested to have six isomers of linear hexylnaphthalene and the structure of each isomer was determined by GC/MS and NMR spectra. For the first time, the unique chemical shift data were obtained. The content of each isomer calculated by ¹H NMR and ¹³C NMR spectra was consistent with that by GC/MS spectra, which confirmed the accuracy of NMR data.     

磷钨酸乙醇染色法在嗜铬颗粒电镜X射线显微分析中的应用

通过比较常规透射电镜制样法、快速冷冻固定－冷冻超薄切片法及磷钨酸乙醇（EPTA）染色法在嗜铬颗粒透射电镜X射线显微分析中的应用，发现磷钨酸乙醇染色法能使嗜铬颗粒电子着色，从而较好地显示嗜铬颗粒的超微结构。同时磷钨酸乙醇染色法也以在一定程度上原位保留生物样品中元素，可以应用于检测样品元素含量的变化或比较样品元素含量的组间差别，提示磷钨酸乙醇染色法是一种可应用于透射电镜X射线显微分析的经济简便的生物样品制备方法。     

A-氧化铁气敏纳米晶锡掺杂最佳含量的理论计算

应用与晶体结构和掺杂上关的最佳掺杂含量的理论表达式,对氧化铁气敏纳米晶粉体中锡掺杂最佳含量进行理论计算。定量计算的结果与实验数据相符合。该理论经适当的修改和解释后也适用于某些其他电子薄膜材料的最佳掺杂含量问题。     

基于无人机中继的星地认知网络波束成形算法

针对基于无人机中继的星地认知网络,提出了两种波束成形（beamforming, BF）算法,通过对各种干扰进行抑制,实现系统间的频谱共享。具体而言,在基于无人机中继的卫星网络作为次级网络、地面网络作为主网络的情况下,以无人机最大发射功率和主用户所受干扰为约束条件,建立次级用户信干噪比最大化准则的优化问题;接下来在已知次级用户统计信道状态信息的条件下,提出一种基于迭代的BF算法对优化问题进行求解;更进一步,为了降低迭代算法的实现复杂度,提出了一种基于迫零的BF算法。最后,计算机仿真验证了所提两种波束成形方案的正确性与有效性。     

Compositional and Dimensional Control of 2D and Quasi‐2D Lead Halide Perovskites in Water

Blue light emitting two dimensional (2D) and quasi‐2D layered halide perovskites (LHPs) are gaining attention in solid‐state lighting applications but their fragile stability in humid condition is one of the most pressing issues for their practical applications. Though water is much greener and cost effective, organic solvents must be used during synthesis as well as the device fabrication process for these LHPs due to their water‐sensitivity/instability and consequently, water‐stable blue‐light emitting 2D and quasi‐2D LHPs have not been documented yet. Here, water‐mediated facile and cost‐effective syntheses, characterizations, and optical properties of 16 organic–inorganic hybrid compounds are reported including 2D (A′)₂PbX₄ (A′ = butylammonium, X = Cl/Br/I) (8 compounds), 3D perovskites (4), and quasi‐2D (A′)_pA_x?1B_xX_3x+1 LHPs (A = methylammonium) (4) in water. Here, both composition and dimension of LHPs are tuned in water, which has never been explored yet. Furthermore, the dual emissive nature is observed in quasi‐2D perovskites, where the intensity of two photoluminescence (PL) peaks are governed by 2D and 3D inorganic layers. The Pb(OH)₂‐coated 2D and quasi‐2D perovskites are highly stable in water even after several months. In addition, single particle imaging is performed to correlate structural–optical property of these LHPs.     

一种适用于网络视频监控系统的应用层组播方案

分析了视频监控系统中流媒体转发的特点，提出了一种适用于网络视频监控系统的应用层组播方案，给出了该方案的设计思路和组播算法理论，并展望了进一步的研究要点。