HCONMe_2对[Co(N_3)(NH_3)_5]~(2+)与 Fe(Ⅱ)反应动力学性质的影响

H_2O—HCONMe_2混合溶剂中,[Co(N_3)(NH_3)_5]~(2+)被Fe(Ⅱ)还原的反应,X_(HCONM)<0.3时,反应的二级速度常数 k 随 X_(HCONMe2)增大而增大;X_>0.3后,k 随 X_2增大而减小.在 H_2O—HCONMe_2混合溶剂中,Fe(Ⅱ)的吸收光谱显示:近紫外区,溶液的吸光度随 X_(HCONMe2)增大而增大;Fe(Ⅱ)的电极电势与 X_的依存灶:随 X_增大,Fe(Ⅱ)的下降,但在X_>0.3后,趋于一定值.因此,反应速度的变化,可认为是由于 Fe(Ⅱ)配位圈中水分子的被取代和 Fe(Ⅱ)电极电势的变化.     

金属与型壳界面作用对精铸件表面质量的影响

讨论金属与型壳界面作用对精铸件表面粗糙度和粘砂缺陷的影响。面层涂料中加入少量氧化铁，可有效地防止钢铁精铸件的表面粘砂缺陷。     

英语阅读抑制视域的歧义容忍度研究

本文基于英语阅读抑制与歧义容忍度的心理学同构关系,从英语阅读抑制视域角度审视歧义容忍度的倾向反应,指导学习者正确面对英语阅读中的陌生语言现象,帮助广大英语教师利用抑制效率调控学生的歧义容忍度,达到降低阅读焦虑、辅助元认知训练以及有效设置歧义场景的教学目的,促进学生英语阅读能力的提升.     

厘清政府主导我国收入分配结构调整的职能边界

改革开放以来,在收入分配利益激励机制的作用下,中国居民收入总量和收入分配结构发生了巨大变化。伴随城乡居民收入规模显著提高,居民收入差距扩大的矛盾也日益突出。然而,缩小居民收入差距,较之于市场作用而言,政府作用更具有优势。因此,明确政府职能,充分发挥政府在宏观调控、中观调整、微观规制、收入支付四个不同层面的主导作用,有利于促进我国“橄榄型”分配结构的最终形成。     

碳正离子多重反应性的讨论

碳正离子是缺电子的活性中间体,易自身或与其他分子或负离子发生多种类型的反应．本文讨论了碳正离子的多重反应性能．     

One of us? Reaction formation and inclusion as a strategy in the ethnic state

Many states question how to manage burgeoning migration. This is particularly problematic for ethnic states whose foundation myths imagine the state as the home for the nation. In this paper, we argue that ethnic states engage a type of defense mechanism, ‘reaction formation’, as part of migration policy to distract attention from threats to the claimed ethnic homogeneity that undergirds the reason for the state's existence. Using Israel as a case of a planned ethnic state, we show how a state develops a spectrum of membership models to incorporate ‘others’ into the nation-state. We suggest that Israel could conceivably devise some arrangement to incorporate the several hundred thousand labor migrants currently resident there. We argue that the state is reluctant to recognize these migrants as ‘Israeli’ because to do so would reveal a hidden truth: Israel may be becoming more Israeli than Jewish and, thus, the recognition of labor migrants and their children provokes questions about Israel's very reason for existence, that is, being a Jewish state.     

The Effect of Product Development Restructuring on Shareholder Value

This article examines the effect of product development restructuring (PDR) on shareholder value. The results are based on a sample of 165 announcements made during 2002–2011. PDR announcements are associated with an economically and statistically significant positive stock market reaction. Over a two‐day period (the day of the announcement and the day preceding the announcement), the mean (median) market reaction is 1.63% (0.87%). The market reaction is generally positive regardless of the PDR purpose or action. Although the market reaction is more positive for higher R&D intensity firms, it is not directly affected by the firm's prior financial performance or whether the firm's primary PDR objective is to increase revenues or cut costs. However, the interaction between the firm's prior financial performance and its primary PDR objective is significant. For firms that are financial outperformers, the market reaction is more positive if the firm's primary PDR objective is to increase revenues. For financial underperformers, the market reaction is more positive if the firm's primary PDR objective is to cut costs.     

市场反应对盈利预测信息后续披露行为的影响——基于中国沪深A股的经验证据

以2006--2009年为研究窗口,选取在沪、深交易所上市的公司（仅限于发布业绩预告的上市公司）作为样本进行实证研究。结果表明：管理者在自愿披露盈利预测时并非仅仅因为好消息或坏消息来决定披露意愿,还要考虑市场是否合理反映了先前披露的信息;管理者首次披露盈利预测习性越早,其披露盈利预测意愿越强。     

低浓度三分子模型局域定态耗散结构

考虑反应物 A的反应和扩散机制 ,研究了低浓度三分子模型局域定态耗散结构 .结果表明 ,在低浓度条件下局域化学振荡和化学波现象也可能产生     

论民族文化互动的特点及本质

民族间的文化互动无时不在,然而对文化互动的特点及本质的认识经历了一个历史过程。本文从文化运作的实质出发,分析了文化互动的特点,提出了文化互动的耦合运作的观点。进而对丈化互动的本质进行探讨,认为文化互动是一个对等的持续过程,是一个从无序到有序的不断调适过程,是民族间相互吸收相互借鉴的过程,
从而形成了“你中有我,我中有你”的人类不可孤立存在的局面。