论YG-75/5.29-M18型循环流化床锅炉燃用煤泥的燃烧调整

介绍了循环流化床锅炉燃用煤泥的燃烧调整方法，阐述了燃用煤泥技术对电厂降低成本，提高经济效益及社会效益的积极意义。     

某金铜矿山含铜酸性废水处理研究

采用石灰调pH—铁屑置换—石灰沉淀处理工艺对废水进行试验，结果表明，采用该工艺处理含铜酸性矿山废水，不仅能使处理后的水满足排放标准，同时还能回收废水中的铜。     

体育运动对提高大学生社会适应能力的作用

体育运动的社会特性毋庸置疑是提高人的社会健康水平，同时，人在体育运动时，既要定位与合作，又存在相互竞争的现象。这对提高大学生的社会适应能力具有一定的积极意义。     

伪装涂料抗老化技术研究

从理论上分析了涂料的老化机理．介绍了伪装涂料抗老化技术的研究现状及高耐候性伪装涂料的最新进展,指出了伪装涂料抗老化技术的发展趋势。     

对加强我国环保产品结构调整的几点思考

本文针对当前环保产业调整中存在的问题,提出了需要解决的五个方面和应处理好的几个关系。     

推进环保产业结构调整的思考

文章对环保产业结构调整要解决的问题进行了分析,指出产业结构调整必须符合市场经济要求的布局和流通结构,只有建立现代化的企业制度,企业才能有活力。     

秦皇岛市可持续发展的条件与能力测试

本文以秦皇岛市为例,探讨了实施可持续发展的基本条件,并从生存与发展能力、生态建设与环境治理能力和社会保障与科技发展能力等三个方面评估了秦皇岛市的可持续发展能力。这种评估方法简便、数据易得、其结果具有很强的可比性和说服力,其评估结果可为城市制定可持续发展战略和实施环境与发展综合决策提供科学依据。     

喷嘴夹持及升降调节安全自动操作装置的研究与设计

介绍了喷嘴实验室的发展情况和武钢技术中心喷嘴试验室建设要求 ,进行了喷嘴夹持及升降调节安全自动操作装置的方案选择、结构设计及主要几何计算 ,分析了它的特点     

Contradictory results in sex ratio studies: populations do not necessarily differ

In avian sex ratio studies, results often differ between species and between populations within species. Some researchers argued that positive results were simply statistical artefacts and that sex ratio adjustment did not exist. However, many of the proposed mechanisms of sex ratio adjustment result in costly laying gaps. In these cases, females laying large clutches may restrict the sex manipulation to the first egg of the clutch. Consequently, detectability of sex ratio adjustment on the level of the clutch can be low. Though obvious, this fact is often neglected in the literature. Using simulations, I show that the proportion of undetected sex manipulation can be surprisingly high when the manipulation is restricted to the first egg. If the sample size is 50 broods, there is 47% and 71% chance in 6- and 12-egg clutches, respectively, that sex manipulation is undetected. Even with large samples (n = 100), the figures are 15% and 46%. These data suggest that nonsignificant results for clutch sex ratios do not necessarily mean that sex is not manipulated in a portion of the brood, e.g. in first-laid eggs. Hence, whenever possible, data on laying order-specific sex manipulation should also be collected. Without such data, contradictory results on brood sex ratios should be interpreted cautiously.     

袋式除尘器脉冲阀性能评价方法及选型计算

在此阐述了袋式除尘器脉冲阀喷吹性能的评价指标和评价方法,并从工程应用的角度出发对脉冲阀清灰能力的评价方法提出了观点。同时介绍了一种简便实用的脉冲阀选型计算方法,供设计选型时参考。