不同污泥制备烧结砖的性能研究

利用不同污泥与基坑土混合制备烧结砖,本文研究不同污泥对砖体烧失量、抗压强度的影响以及不同烧结温度下污泥砖的烧结效果。结果表明,掺加污泥增加砖体的烧失量,且与污泥自身的烧失率呈正相关;掺加污泥显著降低烧结砖强度,降幅在26.7%～50.0%;XW污泥在不同温度下烧结形态和性能差异明显,950℃条件下污泥烧结砖性能相对较优。     

高碱度铅锌浮选尾矿活化选硫试验研究

本文以内蒙古某高硫铅锌矿浮选尾矿为研究对象，采用X射线衍射仪（XRD）、工艺矿物学自动分析仪（BPMA）对尾矿的矿物组成进行分析，并进行活化浮选综合回收黄铁矿的试验研究。结果表明，以浓硫酸为活化剂，乙基黄药和异戊基黄药为组合捕收剂，采用“一粗一扫两精”的浮选工艺，可获得产率9.31%、硫品位37.78%的精矿产品，精矿中硫的回收率达到77.13%，实现了原浮选尾矿中硫的综合回收利用。     

商业银行投融资活动脱碳的路径与对策

碳中和目标下,脱碳是商业银行加强气候风险管理的核心内容.商业银行脱碳包括自身经营活动的脱碳和投融资活动的脱碳两个方面,而投融资活动的脱碳是重点和难点.本文从商业银行的高碳资产置换、低碳资产业务发展两方面出发,分析商业银行投融资活动脱碳的现状,指明其存在的问题,并从监管部门和商业银行两个角度,提出推动商业银行高碳资产置换...     

日本迈向“碳中和”的困境及其实现路径

日本在迈向“碳中和”的道路上除了面临能源结构不合理、企业绿色转型难等问题,更无法回避国内经济增长几乎停滞、区域发展差异扩大以及老年化加深等问题。为此,日本采取了多重措施探索实现碳中和的路径：一是从国家经济发展的宏观层面出发,推出《区域脱碳路线图》配合之前的各项政策,打造可持续发展的循环经济;二是出台《第6次能源基本计划》进一步支持改革与脱碳最为关键的能源结构,提高可再生清洁能源利用效率;三是利用金融引导企业脱碳转型,继续深化绿色金融政策、重新构建全国性碳排放交易市场,为企业“绿化”提供资金与市场支持。     

不同水热条件对玉米根系分解特性的影响

通过田间埋藏分解试验,比较了3种施氮量(0、120和240kg N·hm~(-2))处理的玉米根茬(R_0、R_(120)、R_(240))分别与杨凌塿土、长武黑垆土充分混合并埋藏分解一年后,根茬碳分解差异及其影响因素,并且利用碳稳定同位素δ~(13)C技术,研究了根茬碳分解对土壤有机碳的贡献。结果表明,杨凌地区水、热条件较好,试验期间降水量总和较长武高215mm;杨凌试验地15cm和45cm土层平均温度分别较长武高3.2℃和4.2℃。分解1年后,长武黑垆土中根茬残留碳较杨凌塿土高21%44%。根茬来源的土壤有机碳比例在塿土、黑垆土中分别为22.4%44.7%和27.4%38.3%。在黑垆土中根茬来源的土壤有机碳含量显著高于塿土,3种施氮量根茬来源的土壤有机碳含量差异未达显著水平。可见土壤深度、质地、施肥状况等影响有机残体还田腐解与土壤有机碳的更新,良好的水热条件能够促进玉米根茬残体分解,有利于新增耕地的快速培肥熟化,构建富含有机物质的耕作层,满足作物对养分的需求。     

75 t/h燃煤CFB锅炉掺烧低热值油页岩的试验研究

低热值油页岩在35 t/h流化床锅炉内燃烧稳定,系统运行良好。鉴于此,本研究在北票发电有限责任公司75 t/h燃煤循环流化床(CFB)锅炉开展掺烧低热值油页岩的试验,给料机在300～1 350 r/min下运行,低热值油页岩掺烧量从3.5 t/h增加到15.8 t/h。经过试验对比,同时考虑设备状况,设备基本不改动的情况下,低热值油页岩掺烧量为5.9 t/h,更换冷渣器和除渣系统后,低热值油页岩掺烧量能达到10.5 t/h。研究表明,循环流化床锅炉掺烧低热值油页岩有很好的经济效益。     

某铜矿高品位铜精矿熔炼制粒试验研究

本文以国外某铜矿浮选氧化铜精矿为研究对象,开展氧化铜精矿制粒试验研究,分析了在压强40MPa条件下含水率、氧化钙加入量、活性氧化钙加入量、焦炭加入量、石灰石加入量、干燥温度等因素对制粒团块样所能承受压强的影响,为冶炼渣型试验提供依据。研究结果表明,含水过多,则承受压强降低,当含水率达到8%时,所承受压强最大,添加剂对制粒效果无明显影响,可满足制粒的要求。     

等热辐射孵禽新技术的应用

<正> 等距离热辐射温箱又叫"圆型温箱",由于应用圆周与圆心等距离、等热量辐射原理,使箱内多层禽蛋都能均匀受热,既防止了突发性超温威胁,亦避免了骤然降温危害,还解除了"烧底"的后顾之忧,比煤油灯、炕孵等传统温箱孵禽节能6～8倍,省工4倍,单位面积增加容蛋量3倍,合格受精蛋孵化率可达97%以上。该箱不孵禽时还可速生豆芽,培育菌种,种子催芽等。1.圆型温箱的制作圆型温箱是选用厚薄均匀的     

钢渣煤矸石制取复合铁铝混凝剂及混凝效果研究

利用钢渣和煤矸石中的金属成分制取复合混凝剂,采用正交试验研究混凝剂的制取及混凝效果的影响因素,包括混酸的加入量,混凝剂的加入量以及pH值。实验处理印染废水,测定CODCr去除率和色度去除率。其正交试验显示：当混酸投加量为15 mL,混凝剂的投加量为15 mL/L-1,pH值为6时,CODCr的去除率可达85%以上,色度去除率可达90%以上。讨论了处理生活污水时pH值和混凝剂投加量对混凝效果的影响。     

数字宁波

正40%以上2017年宁波跨境电子商务进口业务交易量和交易额再创新高,分别为4500万单和78亿元,同比均保持了40%以上的增长率。去年"双十一",宁波市跨境电商进口零售交易量达到623.43万单,占了全国跨境进口商品总单量的38.5%,交易额达11.15亿元,交易量和交易额均居全国首位。其中,宁波保税区是全市跨境电商的主战场,占了"双十一"总交易量的70%。     

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.     

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.     

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。     

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。