自升压蒸汽动力循环的理论研究

采用超音速汽液两相流升压加热技术，回收透平抽汽对液态工质加热过程中损失的部分有用能完成升压，从而代替泵和回热加热器，与锅炉、汽轮机及凝汽器等构成自升压蒸汽动力循环，其效率比初终参数和回热级数相同的蒸汽动力循环提高2．6％．由于回热系统无面式换热器，因而锅炉给水在加热过程中不接触铜质换热面，消除了高压蒸汽含铜的现象，也避免了杂质在透平通流部分的沉积，提高了可靠性。回热加热过程不受不凝结气体和结垢的影响，也不产生疏水，从而简化了回热系统，减小了系统体积。     

双温冰箱两种压缩／喷射式混合制冷循环的性能比较

介绍了双温冰箱冷藏室蒸发器和冷冻室蒸发器并联工作及串联工作的两种压缩／喷射式混合制冷循环方式．通过理论计算比较了它们的性能．同时，讨论了不同回热方案对压缩／喷射式混合制冷循环性能的影响，发现在一定的不均衡回热情况下两种循环方式的性能是一致的     

斯特林制冷机传热温差的优化分析

应用有限时间热力学理论，对含有热阻和回热损失的斯特林制冷机的传热温差进行优化分析．并讨论在最佳传热温差下循环的熵产率，获得一些对实际制冷机有指导意义的新结论     

以铁磁材料为工质的不可逆斯特林制冷机的优化性能

建立以铁磁材料为工质的不可逆磁斯特林制冷循环新模型,探索有限热源、热阻、回热损失和回热时间等对制冷循环性能的影响,应用有限时间热力学方法,导出制冷率与制冷系数间的优化关系解析表式,进而获得最大制冷率及其它优化性能参数.     

混合热阻条件下铁电体斯特林制冷循环性能优化研究

利用铁电体斯特林制冷循环模型，在理想回热条件和混合热阻条件下，应用有限时间热力学理论,得到了循环过程中的基本优化关系。     

回热无泵氨-水吸收式制冷系统的设计分析

为了充分利用无泵氨-水系统中稀溶液的余热,在系统内串联一个相同的发生容器,并在各发生容器内增设溶液热交换器.利用建模程序,对系统在不同工况下进行模拟计算,分析了外部参数变化对于循环性能的影响,并与改进前的系统进行比较.研究结果表明:当溶液循环率λ=1时,回热系统的制冷性能系数(COP)可达0.295,比原循环的值提高了82.1%;增大λ值,可大大减少所需预热负荷和预冷负荷,从而较为明显地提高系统COP,改善系统制冷连续性,且λ越大,回热系统的优势越明显.初步探讨了回热系统采用二元工质的性能和参数影响,为后续三元工质的应用研究提供必要的指导.     

评价蒸汽动力循环经济性的新指标──回热作功比

探讨将回热作功比用作评价蒸汽动力循环经济性指标的可行性，从而把热力系统的综合回热效果与机组的经济性指标联系起来．经过严格的推导，提出相应的算法模型，获得了满意的结果．     

回热式磁布雷顿制冷循环

应用热力学理论，导出以顺磁质为工质的回热式磁布雷顿制冷循环的制冷量和制冷系数，并讨论回热对循环性能的影响，得出一些新的结论，可供磁制冷机研制时参考和应用。     

磁Ericsson制冷循环的优化性能

研究热阻、热漏及回热损失等不可逆因素对以顺磁盐为工质的Ericsson制冷循环性能的影响,分析和讨论循环的重要性能参数及优化工作区域,所得结论为磁制冷机的优化设计和性能评价提供参考。     

电厂汽轮机组辅机优化最佳运行方式

在保证火电机组安全运行的前提下，针对汽轮机侧的辅机运行现状，阐述循环水泵，给水汞，回热加热器等辅助设备进行分析和研究，以获得机组的最优运行方式。     

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。     

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.     

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.     

The Analects and the Moment in Peking——The influence of a Confucian education system on the personality formation,the way of thinking and the fate of the main characters

0.Preface China has long been boasting of its colorful and immense culture which comprises of Taoism,Confucianism and Buddhism.The interwoven influence among the religions on Chinese way of thinking,on the nation＇s behavior in their social life throughout the long history is beyond list.