打管理基础 求科技支撑 取创新成效 全力履行精益保供核心使命

主要介绍了热电厂近几年来在技术管理方面取得的主要工作经验，以及围绕生产经营开展科技创新所取得的成绩，并且针对当前形势，进一步提出了热电厂今后一个时期科技工作的指导思想、任务目标和措施。     

MC-CDMA with exponential power profile in Nakagami fading channel

A refined study of multi-carrier code division multiple access transmission over a Nakagami fading channel is proposed. The channel power is modeled with an exponential power profile rather than the uniform profile prevalent in other papers. An expression for the bit error rate (BER) is then derived. Numerical results show that MC-CDMA performances depend on the power dispersion of interferers around the desired user power.     

Plutonium management and Generation IV systems

This paper discusses the potential role of Generation IV nuclear energy systems in managing plutonium. It briefly reviews the Generation IV goals and their relevance to plutonium management. Each of the six selected Generation IV systems [very high temperature reactor (VHTR), gas-cooled fast reactor (GFR), sodium-cooled fast reactor (SFR), super-critical-water-cooled reactor (SCWR), lead-cooled fast reactor (LFR), molten salt reactor (MSR)] is briefly discussed. The main characteristics of each system are summarised and the capability for plutonium management indicated. The potential for the management of plutonium using Generation IV systems is briefly reviewed from a complete fuel cycle perspective to illustrate the issues in the context of a fleet of reactor and fuel cycle facilities.     

Reducing energy-related CO2 emissions using accelerated weathering of limestone

The use and impacts of accelerated weathering of limestone (AWL; reaction: CO₂+H₂O+CaCO₃→Ca²⁺+2(HCO₃⁻) is explored as a CO₂ capture and sequestration method. It is shown that significant limestone resources are relatively close to a majority of CO₂-emitting power plants along the coastal US, a favored siting location for AWL. Waste fines, representing more than 20% of current US crushed limestone production (>10⁹ tonnes/yr), could provide an inexpensive or free source of AWL carbonate. With limestone transportation then as the dominant cost variable, CO₂ mitigation costs of $3-$4/tonne appear to be possible in certain locations. Perhaps 10–20% of US point–source CO₂ emissions could be mitigated in this fashion. It is experimentally shown that CO₂ sequestration rates of 10⁻⁶ to 10⁻⁵ moles/sec per m² of limestone surface area are achievable, with reaction densities on the order of 10⁻² tonnes CO₂ m⁻³day⁻¹, highly dependent on limestone particle size, solution turbulence and flow, and CO₂ concentration. Modeling shows that AWL would allow carbon storage in the ocean with significantly reduced impacts to seawater pH relative to direct CO₂ disposal into the atmosphere or sea. The addition of AWL-derived alkalinity to the ocean may itself be beneficial for marine biota.     

表面电场整形高压RESURF LDMOST

提出了采用对ＬＤＭＯＳ漂移区表面进行分段离子注入，对表面电场进行了整形的一种新结构高压ＲＥＳＵＲＦＬＤＭＯＳＴ。利用二维数值模拟对这种器件结构的分析表明，这种新结构显著降低了表面电场峰值，降低了采用ＲＥＳＵＲＦ技术导致的耐压对工艺参数变化的敏感性，并在耐压不降低的情况下缩短器件漂移区长度，得到低的比导通电阻Ｒｏｎ．Ａ。     

Excavation of Inlet Tunnels at Geheyan Power Station

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秦山300MW核电机组全范围仿真机测试验收

介绍了秦山３００ＭＷ核电机组全范围仿真机的测试验收的整个过程，包括：验收测试规程的形成，工厂内部预测试和工厂用户测试。并分析了测试验收过程中存在的重大问题及解决的办法。     

Analytical Expression of the Threshold Pump Power of Erbium—doped Fiber Laeers Pumped at 980 nm and 1480nm Wavelengths

The rate equations,which is suiable to erbium-doped fiber lasers pumped at 980 nm and 1480 nm wavelengths respectively,are investigated,and analytical ex-pressions of the threshold pump powers under two pump wavelengths are derived.As a result,some important parmeters can be quantitatively specified.     

一种新型无突变自动高压电源

本文介绍一种新型高压直流电源，它的输出高压的提升、下降均自动、无级、缓慢地变化，无突变现象，尤其在电网供电突然中断时，也能使用高压自动、缓慢地下降到０。它用于半导体放射性射线探测器，可以避免由于操作的粗心或电网供电突然中继引起高压快速变化或而产生的对该类昂贵探测器及其附件的损害，使探测器的优良性能得以保持。