基于nRF905的引信信息交互通信技术研究

针对智能弹药的实际需求。提出了一种基于通用单片射频收发器nRF905的低成本引信交互通信方案。最后文中给出了两个引信节点间通信的方法,试验证明该方案的硬件平台结构简单．运行稳定可靠,满足使用环境要求．对于研究引信与火控系统间战场信息的共享问题亦具有借鉴意义。     

Steady-State Plasmas in KT5D Magnetized Torus

Steady-state plasma generated by electron cyclotron resonance （ECR） wave in the KT5D magnetized torus was studied using a fast high-resolution camera and Langmuir probes. It was found that both the discharge patterns taken by the camera and the plasma parameters measured by the probes were very sensitive to the working gas pressure and the magnetic configuration of the torus both without and with vertical fields. There existed fast vertical motion of the plasma. Tentative discussion is presented about the observed phenomena such as the bright resonance layer at a high gas pressure and the wave absorption mechanism at a low pressure. Further explanations should be found.     

Direct Heating Amino Acids with Silica: A Universal Solvent‐Free Assembly Approach to Highly Nitrogen‐Doped Mesoporous Carbon Materials

A general solvent‐free assembly approach via directly heating amino acid and mesoporous silica mixtures is developed for the synthesis of a family of highly nitrogen‐doped mesoporous carbons. Amino acids have been used as the sole precursors for templating synthesis of a series of ordered mesoporous carbons. During heating, amino acids are melted and strongly interact with silica, leading to effective loading and improved carbon yields (up to ≈25 wt%), thus to successful structure replication and nitrogen‐doping. Unique solvent‐free structure assembly mechanisms are proposed and elucidated semi‐quantitatively by using two affinity scales. Significantly high nitrogen‐doping levels are achieved, up to 9.4 (16.0) wt% via carbonization at 900 (700) °C. The diverse types of amino acids, their variable interactions with silica and different pyrolytic behaviors lead to nitrogen‐doped mesoporous carbons with tunable surface areas (700–1400 m² g^?1), pore volumes (0.9–2.5 cm³ g^?1), pore sizes (4.3–10 nm), and particle sizes from a single template. As demonstrations, the typical nitrogen‐doped carbons show good performance in CO₂ capture with high CO₂/N₂ selectivities up to ≈48. Moreover, they show attractive performance for oxygen reduction reaction, with an onset and a half‐wave potential of ≈?0.06 and ?0.14 V (vs Ag/AgCl).     

造山带隆升与非均衡沉降盆地的响应关系——以鄂尔多斯盆地陇东地区长7—长6油层组为例

以鄂尔多斯盆地陇东地区长7—长6油层组为例,通过露头剖面观测、岩心观察及锆石U-Pb测年数据,分析秦岭造山带的隆升特征及对物源的影响、长7—长6油层组内发育的凝灰岩夹层、重力流及震积岩等事件沉积体的时空分布,揭示造山带隆升与事件沉积体之间的响应关系。秦岭造山带自东向西“剪刀式”的俯冲闭合是导致盆地沉积中心不断迁移的动力,长7期在湖盆西南部形成最大深坳区。西秦岭隆升伴生的侵入型“S型花岗岩”为西南部深坳区提供了充足的物质来源。深坳区内部广泛分布着事件沉积体,其中凝灰岩夹层与西秦岭的侵入型岩浆岩具有同源性,自南向北厚度逐渐减薄;深坳区西南部坡折带发育浊流及部分砂质碎屑流沉积体,东北部发育砂质碎屑流及部分浊流、泥质碎屑流沉积体;由盆地西南—东北方向,震积岩岩心变形频率、幅度、规模逐渐降低,表明震源来自于西秦岭附近。因此,秦岭造山带隆升与鄂尔多斯盆地的非均衡沉降及事件沉积响应特征具有很好的时空耦合关系。     

利用岩石弹性模量定量评价潜山储层产能的方法

渤海油田潜山储层岩性复杂、孔隙结构复杂、非均质性强,导致测井响应特征复杂,而DST测试一般都是对潜山井段进行大段合试,因此潜山产出层段的划分缺乏可靠的依据。针对该难点,对基质孔隙和裂缝同时存在的双重孔隙介质Biot理论进行推导,并模拟双孔介质情况下岩石的弹性模量与裂缝孔隙度的关系,发现弹性模量随裂缝孔隙度的增大而减小,而裂缝孔隙度是影响潜山裂缝性储层产能的关键参数。因此,应用弹性模量进行潜山储层产能评价具有坚实的理论基础,进而建立弹性模量与产出剖面测井的关系,然后利用这一关系评价潜山储层的产能。文中提出的这种潜山储层产能评价的方法在渤海锦州南油田多口井潜山储层评价中取得了较好的应用效果,证实了该方法的有效性,同时也扩展了阵列声波测井的应用范围。     

基于MATLAB神经网络的变风量空调控制的仿真

介绍了变风量（VAV）空调系统房间数学模型的建立,在分析了VAV空调系统的优缺点的基础上,提出了人工神经网络控制方式。从建立模型、样本训练和控制实现方面阐述了神经网络在VAV空调系统仿真过程,得到了响应曲线,在理论研究中具有一定的指导意义和参考价值。     

半纤维素的提取及其温敏性水凝胶的制备

以采用稀碱抽提法从植物残料中提取的半纤维素为原料,通过化学交联法,自由基聚合将单体接枝到半纤维素链上,并交联温敏性单体,促使形成共聚交联网络结构,得到温度敏感性水凝胶。通过物理交联法,半纤维素与壳聚糖物理交联,制备半纤维素基水凝胶。采用交联度测定、溶胀动力学研究、红外光谱、差示量热等手段对化学交联和物理交联两种方法制得的半纤维素基水凝胶温度响应性能进行表征。结果表明:10%NaOH提取的半纤维素得率最高;化学交联法和物理交联法制得的半纤维素基水凝胶,都具有温度负响应特性,为温敏性水凝胶。作为当下较为热门材料,广泛应用于医疗、农业和生物组织工程材料等领域。     

基于物联网技术的数据采集模块设计

根据目前国内高耗能建筑缺少有效的能源监测计量的现状,本文提出了一种基于物联网技术的通用型数据采集模块设计方案。该方案基于物联网技术,采用无线组网方式和模块化结构,架构简单、组网便捷、便于建设和改建、易于推广,能解决很多区域无网络和GPS信号不好的区域的能耗采集。