认识矛盾,解决矛盾,研制燃油少无氧化加热炉

随着精密锻造工艺的迅速发展,对坯料的加热提出了更高的要求,实现对坯料的少无氧化加热,已成为发展精密锻造工艺、提高锻件精度和表面光洁度所必须解决的一个十分重要的问题。 为了加速社会主义建设,推广应用精密锻造工艺,湖北齿轮厂的工人师傅和我院的工农兵学员、教师三结合,以阶级斗争为纲,实行教学、科研和生产三结合,进行研制燃油少无氧化加热炉,并且在不断解决矛盾的过程中使之逐步提高。实践证明,燃油少无氧化加热炉的研制和提高的过程,体现了一个由量变到质变的发展过程,一个不断地认识矛盾,解决矛盾的发展过程。     

机械行业节能技术改造的实现——以兰州兰石集团公司为例

介绍了通过用高新技术和先进适用技术对企业锻造加热炉、工业锅炉传统设备的节能改造项目实施,做到节能降耗,提高能源利用效率,达到节约资金、降低生产成本的目的。     

锻造生产的节能和噪声等问题探讨

分析了国内锻造节能状况，节能潜力及措施，锻造工业噪声的产生、危害及控制措施。     

浅谈我国轧钢生产节能降耗技术及合理化建议

文章阐述了加热炉节能、连铸坯热送热装、低温轧制与轧制工艺润滑、在线热处理等先进技术，并指出轧钢生产的节能重点应落在轧钢加热炉的节能上，最后对轧钢生产节能降耗提出几点建议。     

多组盘管式原油真空加热炉设计

多组盘管式原油真空加热炉汇集其他各燃油燃气真空锅炉的优点而设计适合油田环境的新型加热炉。它采用真空相变换热技术,壳体内压低于大气压,无爆炸危险,换热盘管采用U型设计,制造简单。主要用于油、气集输中原油、天燃气、井产物的加热,同时也可用于民用采暖供热水。具有安全性好,操作简单,用途多种,节能和使用寿命长等特点。     

锻造生产的节能和噪声等问题探讨

分析了国内锻造节能状况,节能潜力及措施,锻造工业噪声的产生、危害及控制措施。     

连杆精密锻造新技术

开发了连杆精密锻造工艺及生产线，研制了楔横轧机自动制坯，楔横轧模具三维计算机辅助设计，感应加热炉自动上料，毛坯料温自动化分选，切边、冲连皮，热校得合模具等多项新技术。     

燃油添加剂对内燃机性能影响的试验研究

石油能源日益枯竭使节能问题全球性的重要课题，本文就燃油添加剂对内燃机性能的影响进行了实验研究，以探讨内燃机使用燃油添加剂实现节能的机理。     

轧钢加热炉节能理论及提效方案规划与评价

对轧钢加热炉生产过程的能效分析评价是开展加热炉节能工作和发展加热炉节能技术的基础.针对加热炉的能效问题,建立了包含加热炉热流、流分析的能效分析模型,以热效率、效率、标准燃料消耗量作为能效评价指标,对加热炉实际生产案例进行了能效评估;结合加热炉所处热轧流程的工作特点具体分析加热炉能量损失原因,将其划分为可避免能量损失与不可避免能量损失,前者为加热炉前后工序的不匹配引起的能量损失,后者为加热炉在理想工序匹配条件下由于设备工作过程固有限制而引起的能量损失;根据能量损失原因相应地提出工序匹配和余热回收这两种能效优化技术方法,利用两种方法对加热炉实际生产案例进行了能效优化分析,并以节能率、优化后加热炉的标准燃料消耗量为评价指标对优化结果进行评价,结果显示两种方法的节能率分别为7.71%和14.69%,优化后加热炉的标准燃料消耗量分别为47.29 kg/t(标煤)和44.29 kg/t(标煤),两种方法可同时应用于加热炉的能效优化,同时使用时,其综合节能率为23.56%,加热炉热效率由49.36%升至60.99%,效率由41.83%升至47.11%,标准燃料消耗量由51.12 kg/t(标煤)降至40.98 kg/t(标煤).     

轧钢生产中节能技术分析

轧钢生产耗能占全国的能耗大,节能的潜力很大。推进轧钢技术进步是继续进行生产节能的关键。文中介绍了加热炉节能、连铸坯热送热装、低温轧制与轧制工艺润滑、在线热处理等先进技术,并指出轧钢生产的节能重点应落在轧钢加热炉的节能上。     

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-