适合铝丝键合后热老化要求的金导体浆料

研究了一种适合铝丝键合后热老化要求的金导体浆料，性能达到使用要求。在金浆中添加了少量合金元素，并选用混合型粘结剂。对金导体铝丝焊后热老化失效机理以及添加合金元素的作用，进行了讨论     

光刻用有机金浆研究

光刻有机金浆是以金的树脂酸盐为主，配以有关的贵、贱金属的树脂酸盐等制成。这种浆料分散性好，纯度高，烧制成的金膜薄而致密，覆盖率高，光刻出的图形边沿整齐，分辨率高，附着力好，可以制作出较精密的线路，对于厚薄膜难于满足的一些性能得到了实现和提高。对我国电子工业发展将会起到一定的积极作用。     

管线中钴垢形成原因分析及化学清洗

详细分析垢层形成的原因和清除方法的选择以及酸洗除垢的全过程,一方面使制约装置正常运行负荷的问题得到较好的解决,另一方面也有效地防止了管线、设备的腐蚀、堵塞直至出现超温、超压而发生的火灾爆炸事故。     

动圈传声器振动膜的工艺分析

振动膜的工艺及设计，是动圈传声器设计中的主要技术，文中论述了振动膜的设计及压制工艺，并介绍了几种优良的振动系统。     

An advanced zero emission power cycle with integrated low temperature thermal energy

An innovative zero emission hybrid cycle named HICES (hybrid and improved CES cycle) is presented in this paper. It can utilize fossil fuel and low quality thermal energy such as waste heat from industrial processes and solar thermal energy for highly efficient electric power generation. In the HICES cycle, natural gas is internally combusted with pure oxygen. External low quality thermal energy is used to produce saturated steam between 70 and 250 °C as part of the working fluid. The thermodynamic characteristics at design conditions of the HICES cycle are analyzed using the advanced process simulator Aspen Plus. The influences of some key parameters are investigated. The results demonstrate that the thermodynamic performances of the HICES cycle are quite promising. For example, when the external heat produced saturated steam is at 70 °C, the net fuel-to-electricity efficiency is 54.18% even when taking into account both the energy penalties to produce pure oxygen and to liquefy the captured CO₂. The incremental low temperature heat to electric efficiency is as high as 14.08% at the same time. When the external heat produced saturated steam is at 250 °C, the net fuel-to-electricity efficiency reaches 62.66%. The incremental low temperature heat to electric efficiency achieves 48.92%.     

带有MPPT功能的光伏水泵专用逆变器

利用脉宽调制（ＰＷＭ）方法，对太阳电池的工作点进行跟踪，以获得尽可能的多能量。光伏水泵专用变频装置采用ＰＷＭ斩波方法，对太阳电池的工作电压进行定电压跟踪，它集ＭＰＰＴ和逆变功能为一体，结构简单，性能可靠，已在青海省运行一年。     

如何做好以客户为导向的基础业务服务支撑

随着4G策略的提出,服务业务竞争逐渐回归其本质,即从营销手段、方式和概念炒作回归到以客户需求为导向,从指标需求过渡到客户需求,围绕目标消费者需求而非瞄准竞争对手推进营销服务。以客户需求为导向要求公司业务服务工作支撑与开展实现思想观念、流程设计等“七大转变”,本文就如何实现以客户为导向的营销服务支撑方案,提出“多元化”基础服务支撑机制建设思路。     

Power Allocation for NOMA in D2D Relay Communications

Non-orthogonal multiple access(NOMA)is considered as one of the key technologies for the fifth generation(5G)wireless communications.The integration of NOMA and device-to-device(D2D)communications has recently attracted wide attention.In this paper,a relaying D2D communications assisted with cooperative relaying systems using NOMA(DRC-NOMA)is considered.We analyze the ergodic sum-rate for the proposed system and then derive the closed-form expressions.In addition,an optimal power allocation strategy maximizing the ergodic sum-rate is proposed based on these analysis results.Numerical results show the good agreement between the results of analysis and Monte Carlo method.The proposed DRC-NOMA has a great improvement of the ergodic sum-rate in the small regime of average channel gain of D2D pair.