中国加入WTO石化企业竞争力面临极大考验

概述了中国加入 WTO的意义 ,分析了加入 WTO后中国石化集团公司面临的种种压力 ;指出在环境改变的同时 ,中国石化集团公司只有改变观念、适应体制、调整结构、技术创新、降低成本、开展国际化经营、加强信息分析整理和营销网络建设 ,才能在国际竞争中立于不败之地。     

河南安阳等地考察纪略:写在刘敦桢先生110周年华诞之际(之二)

去岁十一月初，本组曾以上世纪三十年代中国营造学社刘敦桢先生河北古建筑调查线路为主要线索进行建筑文化遗存考察，今年3月24～26日，建筑文化考察组再次以1936年5～6月间刘敦桢先生率陈明达、赵正之等河南地区古建筑考察路线为线索，对豫北地区部分古代建筑遗存进行初步的考察。     

SOM描绘天津未来蓝图 智能可持续地区规划

近年来,中国政府和业界领导已对智能性和可持续性兼备的未来城市发展作出意义深远的承诺。而承诺的核心是以科学为基础的城市功能布局所造就的"近距离(尺度)"城市,它们既能互为补充,又能同时推动经济、社会和生态发展。中国在天津滨海新区的努力,已朝这一承诺大步迈进。2007年春,SOM建筑事务所芝加哥办公室接受委托,为一片27km~2的区域编制总体规划,旨在将这一昔日的工业用地转型为繁荣新城。通过活跃的中心商务区、完善的公共交通网络、综合功能的社区邻里以及壮丽的滨河公园,SOM的规划将滨海新区中心商务区定位为全球精英城市网络中的一员——将其发展为经济成功的象征、绿色开发的模范以及容纳健康和可持续生活的载体。     

Preliminary experiments on the corrosion of CLAM steel in flowing eutectic LiPb

China low activation martensitic steel (CLAM), which is one of the RAFMs and under development in ASIPP, is considered as the primary candidate structural material for blankets in FDS series fusion reactors and will be in contact with the liquid breeder LiPb, so its corrosion behavior is of significance for its successful application. In the thermal convection LiPb loop DRAGON-I, the corrosion experiment of CLAM in flowing LiPb at 480 °C was performed up to about 2500 h to evaluate the corrosion behavior of CLAM in LiPb. The exposed samples were observed and analyzed, respectively, by metallography and scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) spectroscopy after 500, 1000, 1500, 2000 and 2500 h corrosion experiments, respectively. The results show that the corrosive attack started with the dissolution of the passivated oxides formed during the heat treatment on the surface of CLAM steel. Then the corrosive attack continued further into the steel matrix. The weight loss was about 0.38 mg/cm² after 2500 h exposure.     

中医治疗中风恢复期症状30例临床疗效观察

目的探讨了补阳还五汤治疗中风恢复期症状30例临床疗效观察,提高治愈率。方法回顾性分析2008年1月至2009年12月期间入住我卫生队的30例患者,随机分成观察组和治疗组。2组均采用西药治疗,治疗组加用补阳还五汤。结果对照组总有效率86.7%,治疗组总有效率93.3%,治疗效果治疗组明显优于对照组。2组比较有显著性差异(P<0.05)。结论用补阳还五汤加减治疗中风恢复期症状疗效显著。     

Real-time measurement and feedback control of ion temperature profile and toroidal rotation using fast CXRS system in JT-60U

A fast charge exchange recombination spectroscopy (CXRS) system has been developed for the real-time measurement and feedback control of ion temperature (T_i) profile and toroidal rotation velocity (V_t) in JT-60U. In order to control T_i and V_t in real-time, the charge exchange recombination spectroscopy with high time resolution, the real-time processor system, and the real-time control system have been developed. Utilizing this system, real-time control of the T_i gradient between r/a ∼ 0.25-0.5 has been demonstrated with neutral beams at high beta plasmas (normalized beta β_N ∼ 1.6-2.8). The strength of the internal transport barrier is controlled. Moreover, the real-time control of V_t has been demonstrated from counter (anti-parallel to the plasma current, I_p) to co (parallel to the I_p) direction. Then the behavior of edge localized mode (ELM) is changed by controlling the V_t.     

Improved time-frequency analysis of ASDEX Upgrade reflectometry data using the reassigned spectrogram technique

The spectrogram is one of the best-known time-frequency distributions suitable to analyze signals whose energy varies both in time and frequency. In reflectometry, it has been used to obtain the frequency content of FM-CW signals for density profile inversion and also to study plasma density fluctuations from swept and fixed frequency data. Being implemented via the short-time Fourier transform, the spectrogram is limited in resolution, and for that reason several methods have been developed to overcome this problem. Among those, we focus on the reassigned spectrogram technique that is both easily automated and computationally efficient requiring only the calculation of two additional spectrograms. In each time-frequency window, the technique reallocates the spectrogram coordinates to the region that most contributes to the signal energy. The application to ASDEX Upgrade reflectometry data results in better energy concentration and improved localization of the spectral content of the reflected signals. When combined with the automatic (data driven) window length spectrogram, this technique provides improved profile accuracy, in particular, in regions where frequency content varies most rapidly such as the edge pedestal shoulder.     

玄武湖景观区总体规划--以文化游憩为导向的景观区总体规划

面对我国历史文化景观的旅游开发现状，提出以文化游憩为导向的历史文化景观研究方法，提出从文化、游憩及其时空布局来进行历史文化景观发展策划与规划的理论方法，着重论述了文化、景观、游憩的三元关系以及传统文化在景观中的物化。以玄武湖景观区总体规划为例，论述了其文化游憩定性、定位、文化景观的发掘及其传统文化的景观物化。     

太平驿电厂施工期洪水预报

岷江上游开展施工期洪水预报尚属首次，且站点不足，人烟烯少，交通不便，设站困难，通讯条件差。为保证施工期洪水预报工作的开展，充分利用现有国家水文站网，并结合本地区水文特点，在考虑当主雨区最近时其汇流时间约为４－８ｈ这一汇流时间的前提下，尽可能选用通讯条件良好的上游预报根据站作为来水控制站，可不作大流域预报而作区间预报，这就克服了上述困难，不仅为建设单位节省了投资，同时也优化了洪水预报方案。