硬石膏配料在太原水泥厂生產用旋窰中制造水泥熟料及二氧化硫原料气的生產試驗

一、前言我国硫酸工业的主要原料是黄铁矿,由于黄铁矿资源不足,限制了当前硫酸工业的发展,而硫酸又是一些氮肥和磷肥工业的主要原料,硫酸的供不应求,就直接影响了这些肥料工业的发展,为了化学工业更好地支援农业,必须在我国寻找制造硫酸的新原料。近年来,在国外,特别在一些硫及黄铁矿资源不足的国家,对于利用本国丰富的石膏资源,同时制造硫酸和水泥的工业,有了迅速的发展。1916年在德国首先建厂。此后:在英、法、德、波、印度和巴基斯坦等国家,也先后建厂。苏联在这个领域内,作了大量的研究工作。甚至象美国,作为目前世界含硫资源最丰富的国家,近年来对利用硫酸钙中的硫,也很感兴趣。考虑到我国天然硫及黄铁矿资源不足,而石膏资源很     

中国硫酸生产现状及发展趋势

硫酸是重要的基础化工原料之一 ,是化学工业中最重要的产品 ,号称“工业之母”。硫酸的用途非常广泛 ,主要用于制造无机化学肥料 ,其次作为基础化工原料用于有色金属的冶炼、石油精炼和石油化工、纺织印染、无机盐工业、某些无机酸和有机酸、橡胶工业、油漆工业以及国防军工、农药医药、制革、炼焦等工业部门 ,此外还用于钢铁酸洗。1　国内硫酸生产现状我国现有硫酸生产厂家 52 4家 ,生产能力 2 471ｔ ａ ,其中 4万ｔ ａ以上生产能力的有 1 0 0多家。目前我国的硫酸产量仅次于美国 ,居世界第二位。生产硫酸的原料主要有硫磺、硫铁矿、石膏、…     

基于差异驱动模型的我国大中型工业企业技术创新能力动态评价

以我国大中型工业企业技术创新能力动态评价问题为研究对象,从创新投入和创新产出2个方面建立了大中型工业企业技术创新能力动态评价指标体系,应用基于三次差异驱动理论的动态评价模型,并以2000—2012年我国省级区域大中型工业企业为对象进行了实证研究,对我国省级区域大中型工业企业的技术创新能力实现了排序并发现了技术创新能力地区间的差异性.以提高我国大中型工业企业的技术创新能力为目标,结合我国大中型工业企业技术创新过程中存在的问题,从营造良好的创新环境、提高金融支持水平、加强企业人力资源培育能力等方面提出了进一步提高大中型工业企业技术创新能力的政策建议.     

铜陵硫酸渣综合利用

对铜陵地区硫酸渣的理化性能作了深入的讨论.在此基础上进行了硫酸渣烧结半工业试验.对铜陵硫酸渣氯化还原焙烧、磁化焙烧和直接选矿三种工艺进行了一系列小型试验研究,并根据研究结果对铜陵硫酸渣的综合利用提出了几点具体建议.     

我国工业和信息化领域自主创新能力建设的现状和突出问题

我国工业和信息化领域是自主创新能力建设的重点领域,本文分析了目前这一领域的自主创新能力建设现状,并分析了存在的突出问题。     

提高我国汽车工业自主开发能力的政策选择

在目前市场化、国际化背景下,如何增强我国汽车工业的自主开发能力已成为迫切需要解决的问题。文章通过借鉴汽车工业发达国家实施产业政策的经验,并对比我国1994年和2004年两部汽车产业政策中有关自主知识产权的规定,提出了支持我国汽车工业自主开发的政策建议。     

打造我国直升机工业的核心竞争力

随逐步融入世界经济，我国的民用航空运输和制造业的对外开放，既对我国的航空工业的发展既带来了起好的发展机遇，也面国际先进航空产品的临严峻挑战。打造我国直升机工业的核心竞争力，增强我国直升机工业的市场竞争能力，是摆在我国直升机工业目前的一项紧迫的任务。     

1,4—二羟基蒽醌生产工艺改进的试验研究

本文给出了以邻苯二甲酸代替苯酐,以98%的硫酸代替93%的硫酸合成1,4—二羟基蒽醌的方法,为工业上直接以邻苯二甲酸作缩合原料合成1,4—二羟基蒽醌提供了依据.     

工业工程的推广与应用

工业工程是一种比较先进的管理技术和方法,目前,在我国得到了广泛的应用.本文全面介绍了工业工程的概念、方法、应用范围及背景,提出了应用工业工程的重要意义.     

国防科技工业整体素质、科技基础能力和核心竞争力研究

在对美国国防工业基础、国防工业能力概念界定和政策实践以及国内有关产业素质和产业竞争力系统分析的基础上,结合我国国防科技工业的特点,对国防科技工业整体素质、国防科技基础能力和国防科技工业核心竞争力等概念进行了初步界定,并给出了相关的评价指标体系,以期为我国国防科技工业的有关政策制定和管理工作提供参考.     

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

A computer generator for randomly layered structures

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

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.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.