大型铸钢件操作侧机架的铸造工艺

通过多年校企合作生产实践,对大型铸钢件操作侧机架铸造工艺进行了探讨与研究.经过多次技术论证,并对铸造工艺进行计算机模拟仿真试验,以确保铸造工艺合理、可靠.最终采用大型外冷铁、配合冒口对铸件温度场进行控制,采用电弧炉、LF炉联合冶炼,以提供足够的优质钢水,确保铸件质量.此件最终经德国专家严格验收,铸件内、外质量优良,达到了大型铸钢件的设计要求.     

陡坡地采伐归堆机的研究设计

针对我国北方林区采伐机械的作业特点，研制出一种适合复杂林地条件下的陡坡地小径木采伐归堆机。该机装有带车轮、可液压调整的一对后支腿和带有底板的一对前稳定支腿，其可在陡坡山地和沼泽地环境下作业，尤其适用于陡坡山地的采伐集材作业，是一种比较理想的作业设备。     

利用生产数据确定管输含蜡原油的粘温关系

利用热油管道清管后的生产运行数据和室内测试的含蜡原油粘温规律,得到了确定含蜡原油热输管道在线粘温关系的方法,并应用此方法得到了实际管道中原油的粘温关系.与室内测试的粘温关系比较,利用生产数据得到的粘温关系更接近生产管道中流体的性质.     

An integrated water trading-allocation model, applied to a water market in Australia

Temporary water trading is an established and growing phenomenon in the Australian irrigation sector. However, decision support and planning tools that incorporate economic and biophysical factors associated with temporary water trading are lacking. In this paper the integration of an economic trading model with a hydrologic water allocation model is discussed. The integrated model is used to estimate the impacts of temporary water trading and physical water transfers. The model can incorporate economic and biophysical drivers of water trading. The economic model incorporates the key trade drivers of commodity prices, seasonal water allocations and irrigation deliveries. The hydrologic model is based on the Resource Allocation Model (REALM) framework, which facilitates hydrologic network simulation modelling. It incorporates water delivery system properties and operating rules for the main irrigation and urban centres in a study area.The proposed integration method has been applied to a case study area in northern Victoria, Australia. Simulations were conducted for wet and dry spells, a range of commodity prices and different irrigation distribution system configurations. Some example analyses of scenarios incorporating water trading were undertaken. From these analyses potential bottlenecks to trade that constrain the economic benefits from temporary water trading were identified. Furthermore, it was found that in certain areas of the system, trading can make impacts of long drought spells worse for water users, e.g. irrigators. Thus, the integrated model can be used to quantify short-term and long-term third party impacts arising from temporary water trading. These findings also highlight the need to link “paper trades” (estimated by economic models) to physical water transfers (estimated by biophysical models).     

济宁农机化发展问题及对策

济宁市虽农作物耕种收综合机械化水平达到了56％，但仍存在区域发展及结构发展不平衡、农艺与农机脱节等问题。推动济宁农机化进入大投入、规模化、高效率、高效益发展阶段，还须进一步抓好基地建设创新示范工程，特别是要采取措施推动土地规模化经营。     

论我国侦查监督权运行规则体系存在的问题及重建

我国检察机关通过行使侦查监督权,努力纠正侦查中的违法行为,有效地维护了被害人、犯罪嫌疑人等各方当事人的正当权益,为确保司法公正、维护社会秩序发挥了应有的作用。然而,目前我国侦查监督权的运行仍存在着许多缺陷和问题,其中既有立法的不完善,也有具体制度的缺陷和实际操作中的问题。因此,有必要重新构建我国侦查监督权运行规则体系,从而使侦查监督机制发挥应有的功效。     

我国农户家庭经营财务管理浅析

我国是农业大国,但由于经济起步较晚,农业发展相对落后,农民的受教育程度普遍较低,农户在从事家庭生产经营中难以运用科学的经济管理方式,尤其在财务管理方面。对农户家庭经营财务管理方面进行了简单分析,并提出了一些建设性意见。     

油料储运泵运行工况点的讨论

对离心泵在储运油料过程中的运行工况点进行了分析,指出离心泵的运行工况点是由泵本身的性能曲线和装置阻力曲线共同决定的,所输介质的粘度及是否含有固定颗粒或杂质等都会给泵的运行造成影响。给出了这些影响因素与离心泵性能及装置阻力曲线的关系,推荐了对运行工况点的确定方法,为合理选用离心泵及装置设计提供了参考,为泵的高效可靠运行提供了依据。     

浅析中国木材产业的国际化经营问题

国际化经营是影响中国木材产业的重要因素,对于中国木材产业的成长具有重大意义。该文介绍了国际化经营的相关概念,分析了中国木材产业国际化经营的现状,研究了进出口和对外直接投资对中国木材产业的影响,提出了中国木材产业国际化经营的演化路径。     

企业负债经营初探

本文在阐述负债经营为企业带来诸多经济利益的同时，也阐述了它给企业带来的财务风险。控制财务风险的关键在于把握负债经营的适度性。为此，着重论述企业如何通过财务管理手段，并运用一系列财务指标的计算、预测和分析，确定负债经营的最佳度，尽可能地降低负债经营的财务风险