冲击法测量磁感应强度实验的数字化解决方案

介绍了冲击法测量磁感应强度实验的基本原理,利用当今成熟的V／F变换技术和单片机技术,实现了对电压积分的测量,解决了冲击法测量磁感应强度实验的数字化问题．     

The modulation effect of substrate doping on multi-node charge collection and single-event transient propagation in 90-nm bulk complementary metal-oxide semiconductor technology

Variation of substrate background doping will affect the charge collection of active and passive MOSFETs in complementary metal-oxide semiconductor (CMOS) technologies, which are significant for charge sharing, thus affecting the propagated single event transient pulsewidths in circuits. The trends of charge collected by the drain of a positive channel metal-oxide semiconductor (PMOS) and an N metal-oxide semiconductor (NMOS) are opposite as the substrate doping increases. The PMOS source will inject carriers after strike and the amount of charge injected will increase as the substrate doping increases, whereas the source of the NMOS will mainly collect carriers and the source of the NMOS can also inject electrons when the substrate doping is light enough. Additionally, it indicates that substrate doping mainly affects the bipolar amplification component of a single-event transient current, and has little effect on the drift and diffusion. The change in substrate doping has a much greater effect on PMOS than on NMOS.     

基于边缘信息融合的输电线路防外破监测系统研究与应用

针对大型工程车辆施工过程中误碰高压输电线路造成电网事故和人员事故的问题,基于边缘计算对工频电场传感器、激光雷达、双目视觉测距系统进行数据融合,研制了输电线路防外破监测装置,开发了输电线路防外破监控平台和移动终端应用程序,并进行了现场应用验证。该系统为输电线路防外破提供了新的技术手段,能够有效提高输电线路安全管控的智能化水平,具有很高的应用价值和良好的社会推广价值。     

The supply voltage scaled dependency of the recovery of single event upset in advanced complementary metal-oxide-semiconductor static random-access memory cells

Using computer-aided design three-dimensional simulation technology,the supply voltage scaled dependency of the recovery of single event upset and charge collection in static random-access memory cells are investigated.It reveals that the recovery linear energy transfer threshold decreases with the supply voltage reducing,which is quite attractive for dynamic voltage scaling and subthreshold circuit radiation-hardened design.Additionally,the effect of supply voltage on charge collection is also investigated.It is concluded that the supply voltage mainly affects the bipolar gain of the parasitical bipolar junction transistor(BJT) and the existence of the source plays an important role in supply voltage variation.     

催化湿式氧化中铜基催化剂的流失与控制

 制备了催化湿式氧化处理有机废水用铜基催化剂，并用XRD，XRF和TG－DTG等手段对催化剂进行了表征，对催化剂及其前驱体的组成和结构进行了分析鉴定．结果表明，由类水滑石结构的前驱体焙烧得到的催化剂Cu－Al－Zn－O，其活性组分铜的流失得到了控制；在氧化降解苯酚、十二烷基苯磺酸钠和磺基水杨酸时，在初始氧分压0．5MPa和160～220℃的反应条件下，催化剂活性组分铜的流失量小于0．3mg／L．对催化剂活性组分不易流失的原因进行了理论解释和计算．     

聚丙烯中空纤维膜的微孔结构的控制

通过熔纺／冷拉伸法制备了微孔聚丙烯中空纤维膜。研究了工艺条件对微孔聚丙烯中空纤维膜的微孔结构与性能的影响。结果表明：随着纺丝温度的下降或熔体拉伸比的提高，最大可几孔径及孔隙率增大；熔纺中冷却风速提高，最大可几孔径及孔隙率较大；温度低于110℃时，热处理对最大可几孔径及孔隙率的影响较小，在120－130℃时，随着热处理温度的增加，最大孔径及孔隙率有明显增加的趋势；随着初纺中空纤维拉伸倍数的增加，孔隙率先增加而后下降。     

A position-sensitive detector with lithium glass and MaPMT

A position-sensitive detector is designed for neutron detection. It uses a single continuous screen of a self-made lithium glass scintillator, rather than discrete crystal implementations, coupling with a multi-anode PMT (MaPMT). The scintillator is fast and efficient; with a decay time of 34 ns and thermal neutron detection efficiency of around 95.8% for the 3 mm thick screen, and its light yield is around 5670 photons per neutron and 3768 photons per MeV γ rays deposition. The spatial resolution is around 1.6 mm (FWHM) with the energy resolution around 34.7% by using α (5.2 MeV) rays test.     

衬钽管石墨炉原子吸收法测定痕量镓时基体改进剂的研究及应用

提出用钒和铜混合基体改进剂衬钽管石墨炉原子吸收测定镓的方法。衬钽管使镓的灵敏度提高6倍左右,钒和铜混合基体改进剂不仅能进一步提高灵敏度,而且能提高灰化温度,降低原子化温度,增强抗干扰能力。测定 GSD 标准样品中的镓时,不需对样品进行预分离即可直接进行测定,结果与参考值相符。     

关于中微子的电磁形状因子的测定

近年来高能电子在核上的散射直接肯定了核子具有一定的结构,实验并已较好地测出了质子和中子的电磁形状因子。但是,轻粒子的形状因子还没有测定。在轻粒子中,中微子的形状因子又是一个很有兴趣的问题。由于中微子只参与弱相互作用,所以对它的结构因子的理论分析可能较为简单。我们在工作中曾经指出,通过和电子(或μ介子)的弱相互作用,中微子将具有一定的电磁形状因子。初看起来,通过中微子v_e在电子上的散射,可以测定中微子的电磁形状因子。但是事实上,因为v_e和电子有一级的弱相互     

智能短信业务平台的设计与实现

手机的短信功能已经被广泛应用于电信领域.改进了当前的短信业务实现模式,构造了一个业务与控制无关的结构,描述了系统中业务生成的设计与实现.