深井高温矿山热害控制新技术

阐述了对深井高温进行治理的技术措施。重点研讨了冰冷却技术．包括冰的制备、输送和融化技术等。作为一种新型深井降温技术．冰冷却系统由于其具有无静水压力、运行成本低、制冷效率高等突出优点,将在深井热害控制领域有着良好的应用前景。     

浅谈班组长在安全管理中的核心作用

从一件小事入手,论述了班组长在生产实践中的地位、责任、义务等诸多方面的具体细节,得出了班组长是生产中的核心人物的结论。     

长株潭城市群核心区大气环境承载力初探

对长株潭城市群核心区大气环境质量现状进行了分析,评价了长株潭城市群核心区大气环境承载力,分析了长株潭核心区大气环境承载力发展趋势,提出了提高长株潭核心区大气环境承载力利用水平的建议。     

Distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in Sediment Cores of Selected Creeks in Delta State,Nigeria

The spatial and seasonal distribution and concentrations of polycyclic aromatic hydrocarbons (PAHs) were investigated in core sediments of Ubeji, Ifie, and Egbokodo creeks in the Niger Delta, Nigeria. A total of 222 core sediment samples were collected during the wet season (August 2010) and the dry season (January 2011). The samples were dried, Soxhlet extracted, fractionated, and injected into a gas chromatograph with flame ionization detector (GC-FID). The concentrations of PAHs ranged from not detected to 2,654 μg/kg (wet season) and not detected to 3,513 μg/kg (dry season). In general, the concentrations of PAHs for a number of stations in this study are comparable to sites with high anthropogenic activities in the Niger Delta. The toxicity risk assessment based on the total BaP equivalent quotient of the seven carcinogenic PAHs (BaA, Chry, BbF, BkF, BaP, DBA, and Iper) was 97.416 μg/kg and did not exceed the method B cleanup level for benzo(a)pyrene (137 μg/kg), according to toxic equivalency factors, which implied that PAHs in sediments of the present study currently have minimal adverse effects. This study provided information on the concentrations and profiles of PAHs sediment cores, which is useful for source diagnosis, environmental quality management, contamination history, and environmental forensic studies.     

兰姆波飞机结冰传感器的最佳工作模态研究

首先建立了兰姆波在覆盖冰层的无限大各向同性板中传播的波速方程。通过数值计算获得了在覆盖不同冰层厚度下薄板中兰姆波的色散曲线。接着绘制了在给定检测频率下兰姆波波速随厚度变化的关系曲线图,进一步提出了兰姆波飞机结冰检测过程中最佳模态的选取方法。研究结果表明冰层厚度与兰姆波波速之间存在对应关系,可以通过判断各阶模态的耦合情况来选取最佳检测模态。     

烟台四十里湾柱状沉积物氮形态地球化学特征

采用连续浸取法首次对烟台四十里湾柱状沉积物不同形态的氮进行分离,并对其垂直地球化学特征和影响因素进行分析研究.可转化态氮分为离子交换态氮(IEF-N)、弱酸浸取态氮(WAEF-N)、强碱浸取态氮(SAEF-N)、强氧化剂浸取态氮(SOEF-N).结果表明,在沉积物表层(0～10 cm)可转化态氮占总氮的26.14%,并随着深度的增加而含量降低.各形态氮占可转化态氮比例平均大小顺序为SOEF-N(89.7%)>IEF-N(7.97%)>WAEF-N(1.19%)>SAEF-N(1.14%),说明SOEF-N是可转化态氮中的绝对优势态.不同形态氮与沉积物地球化学参数之间的相关关系分析表明,沉积物含水率、总有机碳、pH值、氧化还原电位、粒度组成等因素在一定程度上影响各形态氮含量,但各站位柱状样因其沉积物特征不同受各参数影响程度也不同.     

核心竞争力与区域经济可持续发展

本文将C．K Prahalad和G．Hamel的核心竞争能力理论引入到区域经济领域，并以珠江和长江三角洲的经济发展和竞争状况为例，阐述核心竞争力在区域经济可持续发展中的作用和意叉。文章认为如果区域要在激烈的市场竞争中获取竞争优势，就必须识别和培育自己的核心竞争能力，具有核心竞争能力的区域，才可能具备持续的竞争优势，才能在动态过程中不断地为区域提供竞争能力，区域经济的发展才能保持其可持续性。文章最后提出了构建和培育区域核心竞争能力的有效途径。     

It is also in our nature: Genetic influences on work characteristics and in explaining their relationships with well‐being

Work design research typically views employee work characteristics as being primarily determined by the work environment and has thus paid less attention to the possibility that the person may also influence employee work characteristics and in turn accounts for the work characteristics–well‐being relationships through selection. Challenging this conventional view, we investigated the role of a fundamental individual difference variable—people's genetic makeup—in affecting work characteristics (i.e., job demands, job control, social support at work, and job complexity) and in explaining why work characteristics relate to subjective and physical well‐being. Our findings based on a national US twin sample show sizable genetic influences on job demands, job control, and job complexity, but not on social support at work. Such genetic influences were partly attributed to genetic factors associated with core self‐evaluations. Both genetic and environmental influences accounted for the relationships between work characteristics and well‐being, but to varying degrees. The results underscore the importance of the person, in addition to the work environment, in influencing employee work characteristics and explaining the underlying nature of the relationships between employee work characteristics and their well‐being. Copyright © 2016 John Wiley & Sons, Ltd.     

冰相中双氧水体系罗丹明B的光解机理

研究了模拟太阳光作用下冰相中双氧水体系罗丹明B(RhB)光转化规律,考察了光照时间、温度、RhB初始浓度、pH值和双氧水剂量对RhB光解的影响.对照冰相与水相中RhB在双氧水体系中的光解效果,发现冰相中RhB的去除率远远低于水相,说明冰相中晶格的笼子效应限制了RhB与H2O2之间的反应.同时,研究了外加3种无机阴离子(还原性Cl-、氧化性SO42-和S2O82-)对冰相中RhB降解的影响,结果表明,3种离子都能促进冰相中双氧水体系RhB的光解,其中S2O82-能显著提高RhB的去除率.S2O82-和Cl-加入剂量越高,RhB去除率越高,而SO42-加入剂量增加会阻碍RhB的光解.依据研究结果,推测了冰相中RhB在双氧水体系中的光解历程与机理,为深入了解冰相中污染物自由基降解规律提供依据.     

No person is an island: The effects of group characteristics on individual trait expression

Although most researchers now espouse a person‐by‐situation interactionist approach, there remains much work to be carried out to fully understand how different features of the environment interact with personality to influence behavior. Thus, this study sought to examine the moderating effects of three group‐level constructs on the relationships between two personality traits (conscientiousness and extraversion) and individual performance and counterproductive behaviors. Specifically, using trait activation theory as an organizing framework, we considered the moderating effects of the following: (i) a previously unexamined construct called core group evaluations (CGEs); (ii) group conscientiousness composition; and (iii) group extraversion composition. Data were obtained from a sample of university football players (N = 225–252 from 40 groups). The results indicated that CGEs moderated the relationships between individual conscientiousness and both performance (subjective) and counterproductive behaviors. Group conscientiousness composition also moderated the relationships between individual conscientiousness and both performance (objective and subjective) and counterproductive behaviors. Lastly, group extraversion composition moderated the relationship between individual extraversion and counterproductive behaviors. These findings highlight the importance of considering a team's CGEs, as well as the personality composition of team members when investigating the effects of conscientiousness and extraversion on individual performance and counterproductive behaviors. Copyright © 2011 John Wiley & Sons, Ltd.