道路基层用煤矸石材料路用性能和应用前景探讨

煤矸石具有作为道路基层材料的性能,通过对煤矸石混合料道路基层强度的形成机理分析研究,并对石灰、水泥、石灰和粉煤灰稳定煤矸石性能进行了比较,认为水泥稳定煤矸石抗压和抗拉强度最高,石灰和粉煤灰稳定煤矸石强度次之,石灰稳定煤矸石强度最低。所以煤矸石适合在道路基层,特别是低等级道路基层中使用。     

煤矸石沥青混合料配合比设计与综合性能研究

文章针对矿山废弃物煤矸石,通过对煤矸石的粗集料性能试验,研究了煤矸石作为沥青路面粗集料的力学性能和物理特性,结果表明除针片状颗粒含量较大外,煤矸石粗集料其他指标均能满足相关的技术要求.在合理控制合成混合料中粗集料的针片状颗粒含量的基础上,采用四种沥青混合料变化不同比例和煤矸石集料类型,进行了煤矸石沥青混合料配合比设计,基于最佳油石比开展了煤矸石沥青混合料综合路用性能的研究.研究结果表明,通过采用规模化生产工艺和控制合成混合料针片状颗粒含量等措施,煤矸石沥青混合料同样具有优异的路用性能,可以在高等级道路路面中应用.     

二灰土路面底基层材料配比试验研究

二灰土用作高速公路底基层材料,既可保障底基层的强度要求,又可大量利用粉煤灰,还可降低石灰和土的使用量,对减轻粉煤灰排放危害、保护土地资源有重要意义。本文以辽河油田热电厂粉煤灰、盘锦本地产石灰和风砂土为试验材料,首先分析了二灰土材料强度的形成机理,然后阐述了二灰土原料的准备工作,最后研究了二灰土的配合比设计方法,以期得到满足高速公路底基层填料标准的材料配合比和施工指标。     

石灰土煤矸石作路面基层的应用

通过煤矸石应用于修建公路基层的实践，阐述了石灰土煤矸石作为公路基层的可行性和可靠性及石灰土煤矸石基层的施工工艺，并将当地自然资源合理利用与污染治理相结合。实现经济、环境、社会效益的统一。     

某道路二灰碎石基层的病害原因分析

文章针对南京某市政道路二灰碎石基层发生病害的情况,通过比较各结构层次弯沉测量值,对发生病害的二灰碎石中所使用的脱硫粉煤灰化学成分进行分析试验,结果表明高含硫量是病害发生的主要原因,粉煤灰中的SO3含量控制对二灰碎石基层的质量显得尤为重要。     

平顶山市煤矸石的综合利用途径分析

平顶山市煤炭开采历史悠久，形成了煤矸石的大量堆积。长期堆积的煤矸石占用了大量土地。对环境造成了严重污染，并出现过煤矸石山塌方事故。在详细分析平顶山市煤矸石的堆积对环境造成影响的基础上，提出了应根据煤矸石的组成特征，将煤矸石资源化的观点。并阐述了在建筑材料、生产肥料和代替燃料方面利用煤矸石的途径，对开发和利用平顶山市煤矸石具有的环境保护和经济效益双重意义进行了分析。     

煤矸石在建材工业中的综合利用技术

煤矸石是煤炭生产和加工过程中产生的固体废弃物，每年排放量相当于当年煤炭开采总产量的１０％左右，目前我国已累计堆存３０多亿t，占地约１．３万公顷，是我国排放量最大的工业固体废弃物之一。煤矸石长期堆存不仅占用大量土地，而且造成因自燃污染大气和地下水质、破坏生态平衡等危害。为鼓励和推动固体废弃物的综合利用，我国已制定了一系列优惠政策，其中与煤矸石综合利用直接相关的有两条：①企业利用本企业外的大宗煤矸石、炉渣、粉煤灰作主要原料，生产达到规定掺量的３０％以上的建材产品，且取得新型墙材资质认证的企业，自生产…     

水泥稳定碎石路面基层施工及质量控制

路面基层是沥青路面结构的重要组成部分,在路面基层施工过程中,水泥稳定碎石属于半刚性材料中的一种,其应用范围相对较广,技术特征具体包括:整体性和力学性能,稳定性以及耐久性,同时具有较高的抗冻性、承载力。因此,水泥稳定碎石是目前路面基层施工首选,且应用效果较为理想。文章结合具体的项目施工对路面基层水泥稳定碎石摊铺及质量控制进行了详细分析。     

水泥粉煤灰稳定碎石基层施工和质量控制的分析

水泥粉煤灰稳定碎石基层有着施工操作性能较好、早期强度较高的优点,能够满足当前路面设计的要求和规范。文章立足于施工实践,对水泥粉煤灰稳定碎石基层的施工工艺流程以及质量控制的要点,进行了详细的探讨。     

浅谈利用自燃煤矸石、煤矸石发电厂炉渣生产建筑材料的发展与对策

介绍了矿区煤矸石、矸石电厂炉渣的特征及用其生产轻集料和超细粉的可行性，提出对各矿区开展这项技术的方向与对策。     

Penetration and Post-infection Development of Meloidogyne Incognita on Tobacco as Treated by Rhizobacteria Pseudomonas Fluorescens Strain P-72-10

The bio-control potential of rhizospere bacteria Pseudomonas fluorescens against plant-parasite nematode had been demonstrated. P. fluorescens had shown the effect to enhance tobacco resistance to root-knot nematode Meloidogyne incognita. Inoculation with P. fluoreseens in tobacco could lead to significant reductions in the number of juveniles that penetrated tobacco root and further life stage development of the juveniles. The number of juveniles penetrated into tobac- co root in treatment with P. fluorescens is significantly different from CK at 2DAI, 6DAI, 8DAI and 10DAI. Significant reduction and delayed development of juveniles that penetrated into tobacco root and treated were observed in treatment at 14DAI, 21DAI, 28DAI and 35DAI. In addition, P. fluoreseens treatment leads to a significant reduction in the number of eggs per egg-mass at 35 DAI. The results show P. fluorescens induced a continuously suppression on root-knot nema- tode M. incognita throughout their entire early infection phase of root penetration, subsequent life stage development and reproduction.     

利用膜技术回收利用碱性废水研究进展

回顾了利用膜分离技术处理碱性废水的工艺与综合利用技术所取得的丰硕成果，总结了各种治理方法的特点、适用性及发展方向。     

Taxing Times in Indonesia: The Challenge of Restoring Competitiveness and the Search for Fiscal Space

Indonesia’s economic growth picked up slightly in mid-2016 but remains below the level demanded by government and popular aspirations. Despite a plethora of reforms intended to increase efficiency and productivity, some policies are perverse and longstanding problems of implementation remain. The share of manufacturing has declined, the real exchange rate has appreciated, exports have dwindled, and growth has been trending downwards. The banking sector is stable but inefficient, with wide net interest margins and numerous barriers to competition. Trade protection, particularly in basic food commodities, has created high costs that weigh particularly heavily on the poor. Declining government revenues have placed increasing pressure on the public budget, even as the current administration aims to increase spending on infrastructure and welfare and to enhance productivity. In an effort to increase revenues, the government has announced a tax amnesty program and other measures. In addition, Sri Mulyani Indrawati, the new finance minister, has taken steps to cut non-essential expenditure in order to secure high spending on infrastructure and at the same time keep within the 3% budget deficit limit stipulated by law. Although the overall debt situation is not yet alarming, declining revenues and budget cuts that do not fully reflect this decline are putting pressure on increasing debt levels. The government’s high-profile tax amnesty program was the major policy initiative implemented in the second half of 2016 that aimed to relieve this pressure. Despite widespread criticism of, and scepticism about, the tax amnesty (both within and outside Indonesia), its first phase had a much higher participation rate than most independent accounts expected. Revenues raised so far through the amnesty are less than 60% of the official target, but this is actually a strong result for the short term. The bigger question, however, is whether the amnesty is a key element of a more encompassing strategy to overhaul the system of taxation and tax administration.     

我国发展天文旅游的条件、前景探析及策略思考

天文旅游资源从成因可以分为行星地球天文旅游资源、天体天文旅游资源和天文文化旅游资源三类。天文旅游方兴未艾,我国天文旅游具有很大发展前景。文章对我国开展天文旅游的条件进行了分析,对发展天文旅游的策略和措施进行了梳理。     

城市社会的开放与农民的城市化

城市社会在对农民的开放与封闭之中徘徊。改革开放后城市社会对农民的开放已经使很多农民城市化。城市社会对农民的封闭已由政策性封闭转向经济性封闭。城市社会对农民的封闭增加了农民城市化的成本和社会风险。必须加强城市社会对农民的开放,逐步消除对农民的封闭政策,以推进农民的城市化。     

The causes of Japan's ‘lost decade’: The role of household consumption

In this paper, I analyze the causes of the prolonged slowdown of the Japanese economy in the 1990s and find that the stagnation of investment, especially private fixed investment, was the primary culprit. I then investigate the causes of the stagnation of household consumption during the 1990s and find that the stagnation of household disposable income, the decline in household wealth, and increased uncertainty about the future are among the contributing factors. Finally, I consider whether demand side factors or supply side factors were more important as causes of the prolonged slowdown of the Japanese economy in the 1990s and conclude that the former (especially misguided government policies) were probably more important.     

信息化时代商学院图书馆的建设与发展——中、美四大名校商学院图书馆建设的比较与启示

信息化时代中美商学院图书馆的建设与发展,成为当今时代高等商学教育发展与进步的一个重要环节,对中美四大商学院图书馆的发展状况、差距进行分析比较,对促进我国商学院图书馆事业的改革、建设和发展具有一定的启示作用和参考价值。