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Search Results: 1 - 10 of 346673 matches for " 王海川 "
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微波处理高砷铁矿石脱砷的试验研究
Experimental Study of Microwave Treating High Arsenic Ore
 [PDF]

刘涛, , 徐飞, 陈鹏飞
Metallurgical Engineering (MEng) , 2015, DOI: 10.12677/MEng.2015.21005
Abstract:
利用微波加热的方法处理高砷铁矿石,在不同的配碳量下加热到850℃,950℃,1050℃,1150℃,保温10分钟,微波功率1 KW。试验结果表明:微波焙烧的脱砷效率比常规加热焙烧脱砷效率高,在配碳量为0%、4%、8%,马弗炉焙烧脱砷率为39.29%、69.51%、92.02%,而微波焙烧脱砷率为50.45%、88.66%、95.93%;脱砷率随着配碳量和焙烧温度的增加而增大,在配碳量为0%、4%、8%,平均脱砷率为44.87%、79.09%、92.97%,在850℃,950℃,1050℃,1150℃,平均脱砷率为63.75%、68.98%、77.97%、78.01%。
The iron ore with high arsenic is heated to 850?C, 950?C, 1050?C, 1150?C in the different carbon content and kept thermal insulation for 10 min by microwave (1 kW) heating method. The result indicates that the dearsenification rate of microwave roasting is higher than the regular heating ways. The dearsenification roasting in Muffle furnace is 39.29%, 69.51%, 92.02% and that of mi-crowave roasting is 50.45%, 88.66%, 95.93% at respective carbon content of 0%, 4%, 8%. The dearsenification rises with the increase of the carbon content and the roasting temperature. The average dearsenification is 44.87%, 79.09%, 92.97% at respective carbon content of 0%, 4%, 8%; and at different temperature of 850?C, 950?C, 1050?C, 1150?C. The average dearsenification is 63.75%, 68.98%, 77.97%, 78.01%.
绿僵菌对昆虫的入侵机理*
,尤民生
微生物学通报 , 1999,
Abstract:
转炉渣脱磷能力及铁水脱磷的实验研究
Experimental Study of the Converter SlagDephosphorizing and Hot Metal Dehposphorization
 [PDF]

徐飞, , 刘涛, 毅藩, 于天歌
Metallurgical Engineering (MEng) , 2015, DOI: 10.12677/MEng.2015.21004
Abstract:
基于循环经济和环保对冶金渣循环利用的要求,本文开展转炉钢渣返回铁水脱磷的研究。利用SEM分析了转炉渣的主要物相,研究了在转炉渣中配入不同量的CaO、Fe2O3对脱磷率的影响。研究结果表明,转炉渣的主要物相为Ca2SiO4、RO相和铁酸钙,Ca2SiO4和3Ca?P2O5富集成5CaO?SiO2?P2O5。转炉渣中不配入CaO、Fe2O3时,脱磷率为29.41%,随着CaO、Fe2O3含量的增加,脱磷率上升,转炉渣含量为28%时,脱磷率达到了98.21%。
Based on requirements of circular economy and environmental protection for metallurgical slag reutilization, the research of hot metal dephosphorization with steel slag from converter is carried out in this paper. The effect of converter slag with different addition of CaO, Fe2O3 for the de-phosphorizing rate is studied though analyzing the main phases of converter slag with SEM. The result indicates the main phases of converter slag are Ca2SiO4, RO phase, calcium ferrite and their combinations. The dephosphorizing rate is 29.41% while the converter slag mixes no CaO or Fe2O3, and the dephosphorizing rate rises as the increase of CaO and Fe2O3, then the dephosphorizing rate reaches 98.21% when the content of converter slag is 28%.
LASIK术后9年外伤致角膜瓣撕裂1例
One Case Which Injury Lead to Corneal Flap Laceration after LASIK Nine Years Ago
 [PDF]

刘云, 赵晓楠, 田肖, 洪娟, 李镜
Hans Journal of Ophthalmology (HJO) , 2015, DOI: 10.12677/HJO.2015.42006
Abstract:
LASIK术后外伤致角膜瓣移位、皱褶时有报道,及时复位角膜瓣是公认的处理原则,但是在复位术中如果处理不当可于术后出现上皮植入、上皮内生、角膜瓣融解、角膜感染、层间弥漫性角膜炎(DLK)等并发症。特别是板层刀作瓣的LASIK手术,与飞秒制瓣相比在外伤状况下更容易发生角膜瓣移位甚至撕裂。本文回顾了1例9年前曾行角膜板层刀制瓣的LASIK手术患者的临床资料,其在1个月前被抓伤致角膜瓣撕裂,伤后一天于我院行角膜瓣复位,术后恢复良好。但是该病例也提醒我们,角膜瓣层间的愈合非常微弱,向患者宣教LASIK术后的注意事项十分必要。
Corneal flap dislodged and folds after LASIK have been reported repeatedly. Resting corneal flap is accepted principles of acute. However, improper handling operation may show up epithelial in-growth, corneal flap melting, corneal infection, DLK and other complication. Especially, LASIK using moria microkeratome will more easily show corneal flap dislodged, even laceration. This paper retrospect the clinical data of surgical patients who received operation of LASIK happened 9 years ago. Last month, the patient has been scratched and led to corneal flap laceration. One day after that, the patient do corneal flap resting operation in our hospital, and recover very well. But this case also reminds us that the layer between corneal flap is very weak. So it is very important to tell the patient notes after LASIK.
模糊优选神经网络模型在水资源价值评价中的应用
A Model of Fuzzy Optimization Neural Networks and Its Application in Water Resources Value Evaluation
 [PDF]

邱林, 任国源, , 雷冠军,
Journal of Water Resources Research (JWRR) , 2015,
Abstract: 为了克服水资源价值评价中可变模糊综合评价模型的平方准则、距离参数及权重确定方法选取主观性的不足,本文在综合模糊优选模型和神经网络理论的基础上,运用神经网络的自学习能力,通过网络结构的调整自主获得指标权重,提出了基于模糊优选神经网络的水资源价值评价模型。提出的模型通过利用水资源价值模糊综合评价指数,将反映水资源价值不同层次的各种因素综合起来,反映与水资源有关的诸要素的影响。将提出的模型运用到济南市的水资源价值的综合评价中,结果表明模糊优选神经网络模型的评价结果不但与可变模糊综合评价模型相近,而且能够克服可变模糊综合评价模型中的人工定参数的不足,具有较强的实用性,为水资源价值评价提供了一个很好的途径。
In order to overcome the insufficient of strong subjectivity of the square criterion, the distance parameter selection and weight determination method of the variable fuzzy comprehensive evaluation model in the evaluation of the value of water resources, on the basis of the comprehensive fuzzy optimization model and neural network theory, this paper, using neural network self-learning ability and through the adjustment of the network independent to obtain index weight, proposes the water resources value evaluation model based on the fuzzy optimization neural network. The proposed model will be integrated with various factors, which can reflect the different levels of water resources value, and reflect the influence and water resource related factors. The proposed model is used in the comprehensive evaluation of Jinan water resources value, and the results show that the evaluation results of the fuzzy optimization neural network model not only are similar to variable fuzzy comprehensive evaluation model, but also can overcome the strong subjectivity from artificial set parameters in variable fuzzy comprehensive evaluation model. It has stronger practicability, and provides a good way for the water resources value evaluation.
基于web的基因组浏览器研究现状
,李杰?,亚东?
生物化学与生物物理进展 , 2014,
Abstract: 测序技术的发展促使人类基因组测序成本急剧降低,测序速度迅速增加,对这些数据的分析和可视化已成为生命科学领域最重要的课题之一.基因组浏览器技术在基因序列分析,遗传密码解读,复杂疾病研究等方面具有重要意义.本文综述了9种主要的基因组浏览器技术,并从可视化内容、可视化形式、软件系统架构等角度分析了它们的特点.最后,探讨了基因组浏览器发展所面临的挑战.
湖北省健康中心村可持续发展研究
,宇波,孟祥
中国农业资源与区划 , 2010, DOI: 10.7621/cjarrp.1005-9121.20100406
Abstract: 摘要中心村在发挥最初的人口、耕地、资金集聚效应后,出现农业产业化、规模化亟需升级与环境污染严重、辐射能力受限、就业吸纳效应下降、经济发展后劲不足诸多问题,通过健康村发展循环经济的实践,划分健康村功能布局、分区探索中心村可持续的发展方向和增长方式。
联三吡啶配体及其衍生物合成进展有机化学
苑嗣纯 , ,
有机化学 , 2009,
Abstract: 金属-配体间的配位作用是超分子化学中最重要的相互作用之一,寡聚吡啶配体可以与许多过渡金属离子配位,形成具有独特磁、光物理和电化学性质的过渡金属络合物,因此联三吡啶配体的合成及其过渡金属络合物性能研究引起化学家的广泛关注.综述了联三吡啶配体及其衍生物的合成方法,主要包括成环缩合反应、过渡金属催化的偶联反应以及其它方法,并选取具有代表性的实例对联三吡啶配体的结构和合成方法进行详细地阐述.
掺铁氧体和石墨水泥基复合材料吸收电磁波性能
吕淑珍,陈宁,,霍冀
复合材料学报 , 2010,
Abstract: 研究了添加铁氧体和石墨水泥基复合材料(F/G/C)的吸波性能。通过改变铁氧体、石墨的配比,分析了影响该材料电磁吸收效能的主要因素,并探讨了其影响机制。结果表明:石墨添加量20vol%时材料出现逾渗现象,逾渗区内介电损耗有较大值;0.5~4GHz范围内影响吸收深度的最主要因素是石墨,影响吸收宽度的最主要因素是铁氧体,最佳水平组合为20wt%60μm铁氧体、10wt%250μm铁氧体、30vol%石墨,吸收深度可达-32dB且明显优于单组分复合;吸收主要机制是磁损耗,石墨的加入改善了材料空间波阻抗。
冲击倾向性煤层Z形煤柱诱发冲击地压机理研究
高晓东,张青山,,曹长江
煤炭科学技术 , 2013,
Abstract: 为掌握常村煤矿冲击地压的发生机理及主要影响因素,采用理论分析和数值模拟的方法对冲击地压机理及影响因素进行研究,采用突变理论学等理论对煤柱承受载荷进行分析,得出Z形煤柱冲击地压的主要影响因素为顶板岩层刚度、采空区顶板悬吊长度、煤柱宽度、岩体的黏聚力和内摩擦角等,并利用尖点突变模型对煤柱冲击地压失稳条件进行理论推导,得到了Z形煤柱冲击地压与影响因素的关系式;通过对Z形煤柱区域进行数值模拟,得出了Z形煤柱周边区域应力分布规律。
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