化工安全生产中存在的问题及解决对策

安全是生产的第一要素，只有保证生产的安全运行，才能够取得良好的经济效益，尤其是对于化工企业来讲。化工生产是我国工业生产中的重要组成部分，在我国的经济发展中起到了推动作用。由于化工生产工艺比较繁琐，在生产的过程中具有较高的危险性，生产物质具有易燃、易爆、易腐蚀等各种特性，会对人的健康和周围的环境造成严重的影响，所以要注意化工生产的安全性。文章对于化工安全生产中存在的问题进行了分析，然后提出了解决的对策，对于提高化工生产的安全性具有重要的意义。     

自动化控制在化工安全生产中的应用及优化探索

在化工生产中，对工艺的连续性、腐蚀性等操作条件的要求非常苛刻，在具体的操作过程中也存在一定的危险性，自动化控制便应运而生，为安全生产提供一定的保证。本文主要对化工安全生产中存在的一些问题进行探讨，对自动化控制在化工安全生产中的应用进行深入的分析和研究。     

浅析化工工厂电能质量优化方案

化工工厂电能的质量直接关系到整个化工工厂生产的安全和效率，化工工厂由于电能质量的问题常常导致化工工厂生产过程中造成一系列事故的现象，不仅给化工工厂的生产和安全带来了很大的影响，极大的威胁到了人民的生命财产安全，而且给我国的经济发展造成了巨大经济损失，阻碍了社会的发展。本文就化工工厂电能质量的问题和现状进行分析和探讨，并为提高化工工厂电能的质量提出一些可供参考的意见和措施，并制定一个化工工厂电能质量优化方案。     

化工安全生产中存在的问题及应对措施研究

近几年化工业安全生产事故频发,造成了较大的社会影响。我国化工生产过程中,过于注重经济效益,忽略了安全问题,还有企业抱有侥幸心理,对存在的安全隐患一拖再拖,易引发生产安全事故。该文着重对化工安全生产过程中存在的安全问题进行了系统的分析,并提出相应的解决诸多问题的对策,以提升化工安全生产水平,减少人员伤亡,降低社会影响,保持企业健康持续发展。     

安全仪表系统在化工装置中的运用研究

化工安全问题是化工企业生产中时刻关注的重点内容,安全仪表系统是化工生产中的安全防护系统,为了提高化工企业生产的安全性、稳定性,对安全仪表系统自身安全性进行鉴定,并从合成气204-K停车逻辑控制和安全仪表系统可靠性应用的完善两个方面阐述了安全仪表系统在化工装置中的运用,进而确保化工企业的设备、财产安全得要有效保护。     

在化工工艺装置中安全仪表系统的应用

化工行业的发展方向是向着大型化，智能化方向进行，在生产不断的进行中，安全问题成为了人们经常谈论的话题，在化工生产中安全仪的使用，无疑是给安全带来了极大的保障，这也是化工厂安全生产的一项重要的措施。在本文中作者将结合自己的自身经验，对化工行业安全仪表的使用进行分析和探讨，给相关化工行业的员工们做参考使用。     

浅谈如何做好化工防爆电气设备的维护工作

化工生产过程的安全问题一直备受关注,并且这也是制约化工企业生产和发展的重要因素,因此一定要对该问题提起重视,确保工作人员和设备的安全。阐述了当前化工生产中防爆设备的运行情况,并且对影响防爆设备安全性能的条件进行了分析,最后提出防爆电气设备的维护措施,以期为做好该工作建言献策。     

化工安全生产中特种设备管理的强化

国民经济的快速发展,对于化工产业相关工作产生了新的要求,特种设备作为化工生产环节中重要的设备构成,在其日常运行过程中扮演着十分重要的角色。从现阶段的实际情况来看,化工安全生产特种设备在管理运行价值方面存在缺陷与不足,对安全管理的工作质量与效果产生了不利影响。化工特种设备一旦出现安全问题,将会对人身财产安全带来极为严重的威胁,因而对化工企业特种设备安全生产各个环节进行必要的强化管理就有着十分积极的意义。该文旨在从化工安全生产特种设备管理的相关概念出发,在相关科学理论的指导下,深入探究改进的途径与方式,以期提升安全管理水平。     

化工仪表故障分析与处理

在化工企业中,化工仪表系统在化工企业安全生产过程中发挥着重要的引导作用,而化工仪表系统故障不仅会影响化工企业的正常生产,甚至可能引发生产事故,所以对化工仪表故障进行分析具有重要的现实意义。本文对化工仪表系统中存在的主要故障进行了分析,在阐述化工仪表故障判断思路的基础上对预防和处理化工仪表故障中的问题进行了探讨。     

浅谈如何做好化工防爆电气设备的维护工作

众所周知,化工生产过程的安全问题一直备受关注,并且这也是制约化工企业生产和发展的重要因素,因此一定要对该问题提起重视,确保工作人员和设备的安全。本文主要阐述了当前化工生产中防爆设备的运行情况,并且对影响防爆设备安全性能的条件进行了分析,最后提出防爆电气设备的维护措施,以期为做好该工作建言献策。     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-