Organic polymer thick film light emitting diodes (PTF-OLED)

A guest–host approach was used to fabricate a one-layer organic light emitting diode (OLED). The thick film ink approach allows the two-dimensional OLED to be processed using traditional methods such as silk-screen printing. The I–V–L characteristics of the polymer thick film (PTF)-OLED were studied as a function of the device chemical compositions and physical configurations. Different polymers, hole and electron transporters, and emitters at different weight ratios were studied for its composition dependence. Device configuration also plays a significant role on its overall performance. Dependence on film thickness, electrode type, and the usage of additional charge injection layers were also investigated. The simplified one-layer device allows a straightforward interpretation for the charge-transport and recombination phenomena which shed light for its future improvement.     

常用的铝熔体过滤装置

本文介绍了常用的铝熔体过滤装置,对每种装置进行了简要的描述,并对每种装置在实际应用中进行了比较。     

几种工作模式的微扫描成像系统的理论建模和仿真

在分析微扫描技术成像过程的基础上 ,利用象素传递函数 (PTF)对 1× 1、2× 2、3× 3和 4× 4这几种工作模式的微扫描系统进行了成像理论建模和计算机仿真 .最后对仿真结果进行了分析和讨论     

细分采样叠加技术在推扫式长波红外成像中的应用

在推扫式长波红外成像系统中,由于强辐射背景的存在,探测器的饱和积分时间只占像元驻留时间的十分之一甚至几十分之一,针对这种情况,将细分采样叠加技术应用在该类成像系统中,可以有效地利用推扫成像方式相对于机械扫描成像方式在驻留时间上的优势,达到提高系统信噪比的目的.文中首先针对短积分时间长波红外探测器的特点阐述了细分采样叠加技术原理,从理论上分析了叠加对PTF和图像信噪比SNR的影响.接着简要叙述了基于细分采样叠加技术的长波红外成像系统的软硬件研制情况,最后通过成像实验,验证了系统所采用的各种方法的有效性.     

集成多生理参数监测的终端设计

针对目前健康监测终端设备的弊端,设计了一种便携式多生理参数监测终端.终端设备以ARM微处理器STM32 F405为控制与信号处理核心,通过对多种传感器采集的信号进行实时处理和分析,获取脉率、呼吸、血氧饱和度(SPO2)、脉搏传输时间(PTT)、心电图(ECG)以及光电容积脉搏波(PPG)信息,可实时显示生理参数和波形信息,通过触控屏完成人机交互功能,可方便实现手持式和穿戴式测量方式的自由切换.测量数据可本地存储或者通过蓝牙、Zig Bee无线发送.通过实验测试,该设备测量的生理参数数据准确可靠.     

阴离子垃圾捕集剂在双胶纸中的应用

介绍了一种高阳电荷密度的阴离子垃圾捕集剂PTF用在双胶纸中对纸张性质的影响,尤其是对施胶效果、留着和强度等的影响,并与其它类型的阴离子垃圾捕捉剂如硫酸铝、聚合氯化铝和阳离子淀粉的效果作了比较.通过应用分析,在浆料中添加少量PTF即对施胶效果有很明显改善,且与其他化学助剂有很好的协同作用.     

Co90Zr7Ta3三元合金微观组织及磁性能的研究

通过金相组织观察、XRD分析和透磁率检测,研究了Co₉₀Zr₇Ta₃三元合金微观组织,并通过分析材料组织与透磁率(pass through flux,PTF)变化,得到热机械处理对透磁率的影响。结果表明:真空熔炼制备的Co₉₀Zr₇Ta₃三元合金有大量枝晶组织,主要包含Co基体和枝晶结构的(Co,Ta)₁₁Zr₂。采用轧制及热处理后,合金内部枝晶结构破碎,发生球化。合金中Co基体中的fcc相转变为hcp相,hcp相中(0001)含量的增加提高了靶材透磁率。     

Integrated pore blockage-cake filtration model for crossflow filtration

Crossflow filtration is to be a key process in the treatment and disposal of approximately 60,000 metric tons of high-level radioactive waste stored at the Hanford Site in Richland, Washington. Pacific Northwest National Laboratory is assessing filter performance with waste simulant materials that mimic the chemical and physical properties of Hanford tank waste. Prior simulant studies indicated that waste filtration performance may be limited by pore and cake fouling. To limit the shutdown of waste treatment operations, the pre-treatment facility plans to recover filter flux losses from cake formation and filter fouling by frequently backpulsing the filter elements. The objective of the current paper is to develop a simple model of flux decline resulting from cake and pore fouling and potential flux recovery through backpulsing of the filters for Hanford waste filtration operations. To this end, a model capable of characterizing the decline in waste simulant filter flux as a function of both irreversible pore blockage and reversible cake formation is proposed. This model is used to characterize the filtration behavior of Hanford waste simulants in both continuous and backpulsed operations. The model is then used to infer the optimal backpulse frequency under specific operating conditions.     

基于PTF体系构建的可再生能源产业发展思路研究

发展低碳经济的潮流为可再生能源产业的发展提供了良好的机遇.为了破除可再生能源产业发展面临的障碍,我国必须从技术、政策和融资3个方面构建PTF支持体系,建立一套有机的支持系统,以此促进我国可再生能源产业的发展.     

光纤磁光效应对四波混频功率传递函数影响的理论和实验研究

根据磁光非线性光纤中导波光脉冲的四波混频(FWM )耦合模方程,数值计算了施加不同磁场时相同偏振和 接近正交偏振线偏光入射两种情况下的FWM功率传递函数(PTF),并实验测试了相 应的再生光功率最 大和最小两种起始状态下光纤磁光效应对FWM PTF的影响,实验结果与理论曲线基本 吻合。研究表明, 对光纤施加适当的磁场,有助于提升再生器的消光比性能;在接近正交偏振线偏光入射时, 再生闲频光功率随磁场的变化最为敏感。