The encapsulated nuclear heat source reactor for low-waste proliferation-resistant nuclear energy

The encapsulated nuclear heat source (ENHS) is a new Pb-Bi cooled modular reactor concept that features a combination of the following useful features that may make nuclear energy more attractive: (1) 20 years of full power operation without refueling. (2) Nearly constant fissile fuel contents and k_eff. (3) No on-site refueling and fueling hardware. (4) The ENHS modules are factory manufactured and transported already fueled to the site. (5) No access to neutrons. (6) No mechanical connections between the ENHS module and the energy conversion plant (The ENHS module has the function of a nuclear battery — with 20 years of full power operation at 125 MW_th). (7) At end of life, the ENHS module serves as a spent fuel storage cask and, later, as a spent fuel shipping cask. That is, the fuel is locked inside the ENHS from “cradle to grave”. (8) 100% natural circulation resulting in passive load following capability and autonomous control. This combination of features offers a highly safe nuclear energy system that is characterized by low waste, high proliferation resistance and high uranium utilization. The low waste and high uranium ore utilization are achieved by recycling the Pu and MA many times using a proliferation-resistant dry process; only fission products are to be extracted between cycles. Spent LWR fuel can provide for the HM make-up. The high level of proliferation resistance is obtained by restricting access to the fuel and neutrons and by eliminating the economic incentive of the client country to invest in sensitive technologies or infrastructure that can be used for clandestine production of strategic nuclear materials.     

降低屏研磨设备故障停机时间

本文介绍拓荒牛QC小组选定降低屏研磨设备故障停机时间这一课题，通过调查分析，要因确认，制定对策及实施，取得预期效果和经济效益。     

环境试验设备恒压供水系统

本文介绍了一种基于变频器内置PID的恒压供水系统，包括基本原理、特点、应用、以及在水冷型环境试验设备循环冷却水应用的实际作用。     

STUDY OF IMPACT OF ESTABLISHMENT OF A DAM ON LOCAL TIDAL CURRENTS IN KENDONG OIL FIELD

1 .　INTRODUCTIONKendongOilFieldislocatedonthesoutheasterncoastoftheBohaiSea (BS)andclosetotheestuaryoftheHuangheRiver (HR) .Theadjacentmarinespace(37°10′N - 38°2 4′N ,118°0′E - 119°2 9′E)isashal lowforeshorewiththemaximumwaterdepthofabout2 5minthenortheastofthatregion .Duetosedimenta tionofsilttransportedbytheHR ,thetopographyinthisregionhasbeenexperiencingconspicuouschangesrecently .Thisareaisalsocharacterizedbyalargein tertidalzone[1] whichisdryduringtheebbtideandwetdurin…     

NEW WIND WAVE GROWTH RELATIONS

In the present paper combining the relationship between wave steepness and wave age with the significant wave energy balance equation for wind wave, a new wind wave growth relation is presented. Comparisons with the other existing wind wave growth relations show that the results in present paper accord better with the wind wave growth process.     

黑龙江农垦区的水文事业

综述了黑龙江省农垦开发对水文的要求和水文工作者对农垦事业的贡献.     

磷氮硼(PNB)系催化剂处理对粘胶纤维热裂解行为的影响

催化剂是制备粘胶炭纤维的关键之一，利用含硼、含磷氮和含磷氮硼三种物质作为制备炭纤维的催化剂，通过TG-MS手段分析了三种催化剂对粘胶纤维在惰性气氛下热解行为的影响。结果表明：三种催化剂的加入均使粘胶纤维的裂解反应向低温侧移动，并大大提高了粘胶纤维在600℃时的热解收率，三种催化剂均能提高粘胶纤维裂解产物中水和二氧化碳的生成；含硼类催化剂不能抑制焦油、醛酮和呋喃类物质的生成，而含磷氮和含磷氮硼催化剂对焦油、醛酮和呋喃类物质的抑制作用较强。磷氮硼并用时的催化效果优于单独使用磷氮或硼，二者对粘胶纤维的裂解具有协同催化作用。     

自主创新,龙腾虎跃--记长安汽车工程研究院项目总监闵龙

2006年新年伊始，长安汽车公司吉星高照，好戏连台，一个又一个利好消息接踵而至。年前，公司主帅尹家绪刚刚入围2005年中国十大经济风云人物评选，作客央视新闻会客厅，再一次吸引国人关注长安的目光。元旦刚过，在全国科技大会高扬“自主创新”的旗帜下，长安又与奇瑞、吉利等东部汽车企业登录媒体的汽车企业自主创新龙虎榜。当然，更使长安直接受惠的是，国家发改委等六部委新年一过就首次联合发文，明令取消各地关于限制小排量汽车的规定，并责令3月底之前到位执行，