受压浮煤自燃过程试验研究

矿井采空区遗煤自燃大部分为处于受压状态下的自燃。为观察压力对浮煤自燃过程的影响,采用自制的浮煤加载自燃试验装置对受压浮煤层与自然堆积状态下的自燃过程进行试验研究。结果表明:加载对浮煤的自燃过程确实存在一定影响。加载会加快浮煤层的升温速度,缩短自然发火期,降低最小浮煤层厚度,改变采空区"三带"的划分;加载对厚度介于0.8～1.2 m之间浮煤自燃过程影响最大;随着压力的增加,压力对浮煤自燃过程的影响逐渐减弱,当压力小于1 600 N时,压力的增加对浮煤自燃过程的影响较明显,当压力大于1 600 N时,压力的增加对浮煤自燃过程的影响变小,当压力大于2 600 N时,压力的增加对浮煤自燃过程几乎无影响。     

A longitudinal study of mentor and protégé outcomes in formal mentoring relationships

This study examined relationships between mentoring functions offered and transformational leadership as a mentor outcome and affective well‐being and organizational commitment as mutual outcomes for both mentors and protégés. For this examination, we conducted a longitudinal field study by using 111 matched reports from both mentors and protégés collected at three different points in time over seven months in nine Korean companies that administered a standardized formal mentoring program. Study results showed that mentoring functions assessed at Time 2 were positively associated with mentors' and protégés' post‐mentoring outcomes at Time 3 after controlling for pre‐mentoring initial levels of those outcomes at Time 1. Study findings also revealed that relative effects of mentoring on the mentor and protégé outcomes differed by the types of mentoring functions. We discuss the theoretical, practical, and methodological implications from these results. Copyright © 2012 John Wiley & Sons, Ltd.     

Experimental study on oxygen consumption rate of residual coal in goaf

In order to research the actual oxygen consumption rate of residual coal in goaf, the heating and oxidizing experiment was conducted respectively on five types of single particle size of coal samples and one hybrid particle size of coal samples by using self-developed CSC-B2 test system. This study measured inlet and outlet oxygen concentration of the oxidation tank, and calculated the oxygen consumption rate of each coal sample at different temperatures. For the residual coal in the same goaf, which is regarded as a hybrid particle size of coal consisting of a variety of single granularity of coal, its oxygen consumption rate is the mass weighted average of the rate of each particle size of coal. Accordingly, this paper established the equation of oxygen consumption rate of hybrid particle size of coal samples, taking into account temperature, granularity and oxygen concentration. Then comparison between the calculated value and the actually measured value of oxygen consumption rate of hybrid particle size of coal samples at different temperatures was conducted. And the results reveal that the calculated value basically coincide with the actually measured one. Moreover, the results prove that the established calculation formula for oxygen consumption rate can be used to accurately calculate the actual oxygen consumption rate of residual coal samples. The achievement of this research is of theoretical and practical significance for learning about the characteristics of coal spontaneous combustion and forecasting the self-ignition of residual coal in goaf.     

生态经济不能破坏生态环境

发展生态经济,本应以生态保护与生态平衡为前提,通过对生态资源的保护、开发、利用,实现其经济价值。然而,令人忧虑的是在现实中,只注重向“生态经济”要效益,忽视对生态环境的保护,甚至出现了对生态环境的破坏现象比比皆是。     

广州绿地土壤理化特性及其相关性

以广州市荔湾区城市绿地为起点往东北延伸至从化流溪河自然保护区,建立长100km、宽10km的绿地土壤样带以研究广州市绿地土壤理化性状及土壤因子间的相关性。研究结果表明,广州绿地土壤容重平均值为（1.31±0.20）g·cm^-3,属偏紧范围;自然含水量为112.14～402.33g·kg^-1;总孔隙度均值（44.10%±4.84%）,属过紧实（45.3%～41.5%）。土壤pH值为2.21～7.82,变幅较广;有机质属丰富偏下水平（30～40g·kg^-1）;有效磷、有效钙和重金属的变化范围也较广。土壤砂粒质量分数与绝大多数土壤物理因子呈极显著负相关（P〈0.01）,土壤pH值与重金属总铬、总镉、总铅、有效铜、有效钙和有效钾等呈极显著正相关（P〈0.01）。研究结果为科学使用和保护城市绿地土壤提供依据。     

论溢油鉴定在海事行政执法中的法律适用

主要论述了溢油鉴定结论的合法性条件，溢油鉴定在海事行政执法中的适用等问题，提出了确立海事部门溢油鉴定机构合法地位的相关建议。     

湖北省港口物流体系的空间分析

从系统论角度,以港口空间结构为切入点,采用定性与定量相结合的方法,研究了湖北省港口物流发展的集、疏、运条件。分析了湖北省港口物流腹地经济的水平与规模、港口物流体系的空间结构,提出了湖北省港口物流空间布局构想。     

德、日两国循环经济立法经验及对我国的启示

循环经济立法是发展循环经济的前提，对发展循环经济具有首要的、决定性的作用。借鉴德国、日本两个经济发达国家循环经济立法的成功经验，提出建立符合我国国情的循环经济立法模式和循环经济法律体系的构建。     

沿海城市自然灾害脆弱性评估研究进展

对于经济发达、人口密集,但自然灾害频发、易受损的沿海城市,自然灾害脆弱性评价研究具有重要的科学价值与现实意义。综述了该领域的国内外研究进展,对我国沿海城市所面临的自然灾害的高风险性提出了综合脆弱性评价理念。     

中国城市垃圾资源循环利用问题探讨

长期以来,人们提到的资源一般是指自然资源。从当前世界发展趋势看,自然资源虽然对区域社会经济发展十分重要,甚至起到某种决定性作用,但社会经济发展水平往往取决于社会经济资源对自然资源的作用效率。在现代社会中,资源的概念迅速扩展,人们对复杂问题的理解和思维方式正在发生日新月异的变化。特别是面对全球经济一体化、资源环境和生态全球化趋势,考虑可持续发展的总体要求,资源、人口、经济、环境、生态、社会等越来越明显地交织在一起。"垃圾"作为一种资源类型,愈来愈受到世界各国决策界和学术界的高度重视。通过我国经济增长和城市垃圾增长的正相关关系,分析了城市垃圾资源循环利用的操作原则和相应对策。