煤质分析与检查对选煤厂设计及选煤厂生产加工的重要性和指导性

选煤厂设计中的煤质分析与检查对于保证选煤质量非常重要。加强选煤厂煤质分析与检查,要建立健全管理机构,落实完善管理制度,完善先进科学管理体系、提高煤质管理水平,完善煤质监测手段,严把煤质管理关。     

煤质管理信息系统在准格尔能源有限公司选煤厂的应用

根据选煤厂自身特点和煤质管理、生产统计、调度等生产信息需求,将计算机和信息技术应用于煤质和选煤厂生产管理,实现全厂数据共享,部分数据实现全公司共享,方便了信息的利用,提高了信息反馈的效率,为我公司信息标准化建设打下良好的基础。     

基于STM32的选煤厂压滤机安全运行监测装置的研发

为确保选煤厂压滤机电机设备的安全、高效运行,电机相关参数的在线监测装置的研发意义重大.本文阐述了基于STM32的选煤厂压滤机安全运行监测装置的研发,结合目前煤矿洗选厂压滤机设备故障监测方面智能化、自动化、信息化水平较低的现状,开发了基于FreeRTOS操作系统,利用多任务机制实现对压滤机电机温度信息、振动信息及电流信号...     

浅谈4.0Mt/a选煤厂技术改造

该文针对一个4.0Mt/a选煤厂生产工艺现状,提出对末煤分选系统、自动控制系统、浮选尾煤处理系统、外来原煤受煤系统、原煤准备作业等进行技术改造,以适应煤质变化和市场需求,以提高经济效益.     

一种程序状态监测系统

为了有效地监测程序的运行状态(如变量值、方法调用、程序控制流等),提出了一个通用的程序状态监测系统(PSMS).PSMS可以指定收集何种程序状态信息,保存到信息库中,扩展了通常的断言系统和调试系统,可以在任意文件的任意位置声明断言,提供更多的运行时刻信息.PSMS采用了软件传感器技术来收集程序信息,并设计了一个专用的查询语言来进行状态收集后的分析工作.通过一个简单的计算器程序,演示了PSMS如何有效地监测和收集信息.     

额济纳胡杨林管理信息系统的研建

以管理信息系统组件为基础,开发了额济纳胡杨林管理信息系统.系统的主要功能包括胡杨林资源的数据采集、数据分析、信息查询、多媒体显示、动态监测与预测、专家分析等.系统运行状态稳定,数据处理速度快、精度高,有较强的模块性、封装性、继承性和易维护性,且冗余度较小.     

四川省地质灾害隐患点掌上查询系统上线

<正>打开、选择、查询,只需几秒钟,就能看到你所查询区域地质灾害隐患点及监测责任人有关信息。这是由四川省省国土资源厅与四川日报、四川在线联合制作的四川省地质灾害隐患点掌上查询系统,于8月15日正式上线运行。据新一轮排查显示,四川全省共有地质灾害隐患点4万余处,这些地质灾害隐患点的类型、位置和防灾责任人、专职监测员,以及所在区域地质灾害气象风险预警信息等都能在系统中查询。6月28日召开的四川全省地质灾     

大型多支承回转窑运行状态监测系统的研究

大型多支承回转窑运行状态好坏主要受其运行轴线的影响 .介绍一种以窑运行轴线作为监测量 ,研制的回转窑运行状态监测系统 .该系统采用零位移方向键相测量原理进行测量 ,克服了现有测量系统高处安装定位困难、测量操作复杂 ,不便于现场监测的缺点 .在系统的分析软件中应用了在回转窑运行状态分析方面取得的最新研究成果 ,能进行轴线预测查询、托轮力查询、调窑参数优化等分析 .系统硬件结构简单 ,软件功能齐全、界面友好 ,操作使用方便 ,在实际应用中效果很好 .图 7,参 7.     

煤质管理信息系统在选煤厂数据管理中的应用

煤质管理信息系统的应用,在很大程度上促进了各方面信息的交流与反馈,能针对选煤厂的实际状况实现煤质的管理和调度,从而实现效率最大化。选煤厂通过对计算机技术的应用,推动了煤矿开采和加工行业的信息化,为建立煤矿行业的信息化标准创造了良好的发展环境。     

浅谈选煤厂的煤质检查与管理策略

选煤厂的煤质检查工作是保证煤质量的重要环节,在实际应用中,应该根据选煤厂技术检查的要求来相应开展。在整个生产工艺流程的检查过程中,要对重选工艺流程进行检查,对浮选及煤泥水工艺流程进行检查,也要对脱水及干燥工艺流程进行检查,同时还要积极完善选煤厂的管理制度,提高选煤厂的煤质管理水平,从而有效管理选煤厂的煤质。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~