"小国寡民"与"乌托邦"比较研究

老子的"小国寡民"和托马斯·莫尔的"乌托邦"都是两位历史伟人针对当时动荡的政治局面提出的理想社会,都表达了人们追求和谐、安宁、舒适生活的愿望,都是人们追求幸福的体现.但由于两人所处时代、所生活环境的不同,两人提出的理想社会也存在许多差异.     

"会健体"能力培养"五步走"

2009年暑期,苏州教育局向学生提出了"会休息""会自学""会健体"的"三会"要求,这种"课外教育"新模式对教师提出了更高的要求.作为体育教师,应该充分调动学生参加课余自主健体的积极性,教给他们科学的健体方法,把课堂教学任务有效地转化为学生课外自觉积极的自主锻炼行动,努力培养和提高学生"会健体"的能力.     

"精英荒"与"人才大业"

"未来十几年,是我国人才事业发展的重要战略机遇期."中央领导层如此作了概括.在国务院颁布的<国家中长期人才发展规划纲要(2010-2020年)>中则提出,中国要从人才大国走向人才强国.     

论"会计信息失真"的对策

目前,在我国的财会管理工作中,"会计信息失真"的情况时有发生.本文从主观、客观两方面分析了"会计信息失真"的原因,并提出具体的防范措施.     

试论"概念隐喻"

隐喻不仅是一种语言现象,更是一种认知现象,是人类思维的基本方式.概念隐喻是隐喻系统的中心概念,是隐喻研究的一项重要内容,它的提出标志着隐喻研究从传统的修辞学进入了认知范畴.本文试从三个主要方面分析和阐述概念隐喻:概念隐喻构成的基本方式是从已知领域向未知领域的映射,以达到对未知领域的认知和判断;概念隐喻的最主要特点是系统性、概括性和派生性;概念隐喻作为强大的认知工具,可以通过阐释隐喻和构建隐喻两种方式来辅助人们的思维,帮助人们运用具体简单的概念来认知和理解自然界和社会的复杂问题.最后,本文提出了概念隐喻对于词汇教学的启示作用.     

我国"招工难"原因以及对策研究

"招工难"现象引发了社会热议,不同的人有不同的看法.本文分析了"招工难"的原因,提出了扩大就业是解决"招工难"的关健,总结出了解决我国"招工难"的措施.     

"双重代表权"问题始末

联合国中国代表权问题从1949年提出到1971年最终解决,历时22年之久.尼克松政府和台湾为保住联大及安理会席位作最后的挣扎.美国推出了在确保台湾席位的同时,接纳中华人民共和国进入联合国,即带有"两个中国"意味的"双重代表权方案",并就此展开了外交斡旋.事实证明,无论台湾怎样挣扎,终是难逃被驱逐的命运.     

《太一生水》"神明"考释

郭店楚简<太一生水>提出了一种独特的宇宙论.该文本在论述宇宙生成时提出了一系列哲学概念,其中关于"神明"概念的解释学界争议颇多:或云"神明"为神祗,或云为日月,或云为精气和精气显现出来的作用及现象.这些解释皆可商榷.考之典籍可知,"神明"应指"精气和日月星辰".     

"汽车电器"双语教学的探讨

分析了<汽车电器>课程的教学现状和存在问题的基础上,探讨了本课程实施双语教学的可行性,并提出了汽车电器实施双语教学的方法.     

"以人为本"高校图书馆管理模式初探

对高校图书馆管理体制的现状与发展进行了一定的探讨,在此基础上论述了"以人为本"图书馆管理模式的内涵,分析了实行"以人为本"的管理模式的必要性.最后,针对高校图书馆提出了几个切实可行的"以人为本"的管理措施,以期对各高校图书馆管理人员起到一定的参考作用.     

rRNA chemical groups required for aminoglycoside binding

Through an affinity chromatography based modification-interference assay, we have identified chemical groups within Escherichia coli 16S ribosomal RNA sequence that are required for binding the aminoglycoside antibiotic paromomycin. Paromomycin was covalently linked to solid support via a nine atom spacer from the 6"'-amine of ring IV, and chemical modifications to an A-site oligonucleotide that disrupted binding were identified. Positions in the RNA oligonucleotide that correspond to G1405(N7), G1491(N7), G1494(N7), A1408(N7), A1493(N7), A1408(N1), A1492(N1), and A1493(N1), as well as the pro-R phosphate oxygens of A1492 and A1493 in 16S rRNA are chemical groups that are essential for a high-affinity RNA-paromomycin interaction. These data are consistent with genetic, biochemical, and structural studies related to neomycin-class antibiotics and provide additional information for establishing an exact model for their interaction with the ribosome.     

Order Parameter in L10 FePt Nanocrystals

FePt nanocrystals with L1₀ chemical order have high magnetic anisotropy. FePt nanocrystals with fcc structure need to be heated to 600 °C to form the hard magnetic L1₀ phase. The order parameter (S) in nanocrystals changes during annealing. The order parameter in L1₀ FePt nanocrystals determines the relation between chemical ordering in this structure and the position and intensity of XRD peaks. To evaluate the effect of chemical ordering in the L1₀ phase in a quantitative way, some equations were used to calculate the S. In this work these suggested equations are compared and the results are reported for synthesized samples. The most suitable equation is suggested by physical discussion.     

硫化锌精矿加压浸出时H2S的生成及影响

分析了硫化锌精矿加压浸出过程中H2S的生成,并结合试验中所发现的现象阐明了H2S生成对钛质加压釜体的腐蚀作用,提出了腐蚀机理,在此基础上提出了钛质加压釜安全操作的原则。     

BT80SS抗H2S腐蚀石油套管的研制

根据化学元素对H2S应力腐蚀的影响,选用C,Mn,Cr和Mo为合金元素,控制S和P等有害元素的含量,同时加入RE;根据钢管的组织对抗H2S应力腐蚀的影响,采用淬火后高温回火的热处理制度,生产出了具有自主知识产权的抗H2S套管,该产品具有良好的耐H2S腐蚀性能。     

30t EAF-LF-VHD流程冶炼精钢材的工艺实践

本文阐述一种化学成分要求苛刻的精钢材的冶炼过程,冶炼流程为30t EAF-LF-VHD。详述了冶炼精钢材保证化学成分合格的各工序控制难点及冶炼操作的要点,达到电炉脱磷至w(P)≤0.001%、LF炉脱硫至w(S)≤0.003%以及VHD炉精炼深脱硫至w(S)≤0.001%。     

X射线荧光光谱法测定萤石中CaF2、SiO2、P和S

采用熔融法制样，通过条件实验找出最佳熔融条件和测定条件，采用标准样品和合成标样绘制校准曲线，用X射线荧光光谱法测定萤石中CaF2、SiO2、P和S的含量。测量结果与标样标准值、未知试样化学分析值相符，CaF2、SiO2、P和S的相对标准偏差分别为0．19％、0．49％、7．55％和3．18％。     

37CrMnMo4H1钻杆接头用钢的研制

叙述了宝钢开发的37CrMnMo4H1钻杆接头用钢的过程。提出了不同炉外精炼技术的组合工艺，使钢的硫、磷含量及非金属夹杂物得到了有效的控制。描述了该钢种的化学成分设计、质量要求、生产工艺和实物水平。     

Slag Melting Characteristic of Slag Forming and Slag Splashing for BOF Less Slag Smelting

 The slag melting characteristic of slag forming and slag splashing for 300 t BOF less slag process is researched by combining the methods of the slag chemical composition, the melting point determination and the petrographic analysis. The results show that the melting point of final slag for less slag smelting is 20 ℃ lower than that for conventional smelting. According to results of the petrographic analysis, the C3S (3CaO·SiO2) and C2S (2CaO·SiO2) content for less slag smelting are lower than those for conventional smelting, while the RO (FeO, MgO, MnO, etc) phase and C4AF (4CaO·Al2O3·Fe2O3) phase are higher than those for conventional smelting. According to results of the chemical analysis, the (CaO) content and slag basicity for less slag smelting are higher than those for conventional smelting, while (FeO) and (MgO) content in slag for less slag smelting are almost equal to those for conventional smelting. The reason why slag melting point for less slag smelting is lower than that for conventional smelting is that the quantity of added fluorite for less slag smelting is more than that for conventional smelting. According to the analysis results the slag melting point is determined by the C3S, C2S, RO phase and C4AF content. According to the results of slag melting characteristic before and after slag splashing for less slag smelting, the present adjusting slag process has little effect. It is important to adjust the composition of BOF final slag. The (FeO) content in slag is to be reduced at the slag splashing and adjusting slag process for less slag smelting.     

Exploration of the structural environment of the iron-sulfur cluster in putidaredoxin by nitrogen-15 NMR spectroscopy of selectively labeled cysteine residues

Putidaredoxin is a di-iron protein whose paramagnetic region is not well characterized by 1H detected NMR. We have studied the structure of this region in greater detail by directly observed 15N NMR of oxidized and reduced putidaredoxin preparations in which the six cysteine residues are selectively labeled with 15N. A new method for preparation of a stable form of reduced putidaredoxin has been developed for use in NMR. The 15N NMR spectra of the oxidized and reduced forms are characteristically different, and we have measured and compared 15N chemical shifts, spin-lattice relaxation times (T1), and chemical shift/temperature dependences for both forms. Evidence for localized valencies of the iron atoms in the reduced form is presented. From the 15N T1 values of the oxidized form, reduced distances of the cysteine backbone 15N nuclei from the center of the Fe2S2 cluster have been calculated. These distances are consistent with those calculated from X-ray crystal structure data for five ferredoxins, and confirm the structural similarity of the Fe2S2 clusters in putidaredoxin and in these ferredoxins in the oxidized state.     

邯钢高炉喷吹煤种的优化选择

通过对邯钢高炉喷吹用煤的化学成分、燃烧性能、输送性能、反应性和可磨性能的系统研究,认为高平秦城南煤可以作为邯钢高炉喷吹无烟煤的首选煤种,兴隆煤可以作为邯钢高炉喷吹贫煤或贫瘦煤的首选煤种.