山区杂粮机械化技术推广缓慢的原因探析及发展措施

通过对长子县山区杂粮机械化生产推广工作发展缓慢因素的分析,探讨影响其发展水平的主要根源,同时有针对性地提出发展措施.     

国内外耕种机械化技术与机具的发展

耕种机械化技术是指以机械为手段,完成作物生长所需的苗床准备(耕整地)和实现播种的生产技术.对农业生产耕种技术的推广和规模化起促进和保证作用,农机具是农机化技术的载体,两者密不可分.     

蓝星品牌的构建

防腐蚀行业在经过了一段时间的发展之后,有一些企业已经逐渐完成资本积累,逐步走上专业化、正规化、机械化和现代化的道路,从扩张期向成熟期转型,在这里有一些企业转型期必须注意的基本事项,与大家分享。     

Analysis of factors of top coal caving in fully mechanized sublevel caving face in soft coal and control

According to the analysis of the mechanism of top coal caving, the caving condition was pointed out, and many factors of caving were also determined. Then the relationship between factors and caving was studied. Based on the above research, one effective method by using field monitoring was brought forward to determine the controlling factor. Then some related key technologies were provided, such as keeping the integrality of the top-coal, raising the horizontal resistance of supports and decreasing the real end-face distance etc.. At last one application of this method was presented, and it was proved to be an effective method.     

Study on rock burst of fully mechanized sublevel caving mining in deep mine

The theoretical analysis, numerical simulation and field observation were used to study distribution characters of abutment pressure of fully mechanized sublevel caving face in deep mine, fully mechanized sublevel caving and pressure relief in entries along goaf to the influence of rock burst. The results show that： （1） With the increasing of mining depth, the abutment pressure zone is larger, its peak point is transferred to the front of face, the danger area occurring rock burst in the two fully mechanized sublevel caving entries is larger, and its position is far from the face; （2） There is larger failure area in the upper coal in front of the fully mechanized caving face, and strata possibly occurring rock burst transferred to the upwards or far from faces because of the main roof＇s buffer effect to the dynamic pressure burst, then possibility and strength reduced; （3） The position occurring rock burst is stress concentration zones （abutment pressure along the goaf and residual tectonic stress） and zones with geological structure; （4） Strenuous activities of roof is the inducing factor occurring rock burst.     

食品类企业工人受教育程度的差异化研究

以我国食品类企业工人教育程度为研究对象,从完全信息和贝叶斯均衡视角对食品类企业工人受教育的影响和主体选择进行理论逻辑探讨,在建立相关假设条件的情况下得出:教育水平的高低会影响工人工资的水平,低能力者会模仿高能力者选择受教育程度,进而提升自身工资,但选择高等教育的策略并不能完全为低能力者带来合适的收益.文章综合分析了贝叶...     

企业文化对市场竞争力的作用

<正>随着市场经济体制的逐步完善,特别是我国加入世贸组织以来,企业的竞争力受到市场检验的程度明显提高。当每个企业在追求企业的规模、资金、成本、品种的同时,是否关注到了企业文化在市场竞争中占据的位置?如何在愈演愈烈的市场竞争中提升企业的竞争力?这些问题已经引起了越     

故障树分析法在蔺家坝船闸液压启闭系统设备管理中的应用

0引言蔺家坝船闸位于京杭运河徐扬段最北端,是京杭运河苏鲁交界处的重要航道枢纽,安装有4扇人字型钢闸门,4扇平面钢阀门,采用液压启闭机操纵,共设4套液压站,每套液压     

江苏网通用一揽子方案力推中小企业信息化

目前,我国中小企业将近1000多万家,江苏目前共有中小企业80余万家.是我国中小企业的聚集地,和其他省市的中小企业相比,江苏的中小企业具有外向型多、知识化程度高等特点,具有非常大的信息化开发潜力.     

机床电气的故障分类与防范措施

随着科技的进步,机床控制装置自动化程度不断提高,推动生产力飞速发展,但另一方面,电气故障也随之变得复杂。本文根据故障类型进行归类,并阐述各类故障的特点及规律性,以期我们在日常维修工作中,更具有针对性,使故障尽快消除。1元器件故障由电器件问题诱发或引起电器装置的故障就叫元器件故障。电气元器件故障又可分为随机故障和有规则故障。我们知道继电器铁芯随着气隙的减少,剩磁会更大,加之其表面沾染的灰尘随工作时间增长而越积越多,使继电器线圈失电后,不能立即复位,造成故障。这种故障有发展过程,发生的时间多在继电器工作一段时间之…