La0.7Mg0.3Ni3.4-x(Al0.3Co0.4)0.2+x(x=0~0.3)合金电极电化学性能研究

在氩气保护下,采用悬浮熔炼法制备La0.7Mg0.3Ni3.4（Al0.3Co0.7）x（x=0,0.2,0.4,0.6）储氢合金,用X射线衍射仪测试相组成,并用MDI Jade 5.0软件分析相组成和晶胞参数,用开口三电极法测试电极电化学性能。结果表明,合金相主要由LaNi5、LaMg2Ni9、La2Ni7和LaNi2.28相组成,随着合金中Al和Co含量的增加,合金放氢平台压下降,最大吸氢量为1.43%（x=0）,合金电极最大放电容量Cmax为381mA.h.g-1（x=0）,合金电极100个充放循环后的容量保持率S100从53.0%（x=0）增加到57.1%（x=0.3）,循环稳定性增强。当x=0.1时,合金电极的电化学动力学性能较好。     

La0.7Zr0.1Mg0.2Ni3.4-xCoxFe0.1合金的制备与电化学性能研究

在氩气保护下采用电磁感应熔炼制备La0.7Zr0.1Mg0.2Ni3.4-xCoxFe0.1（x=0.15,0.25,0.35,0.45）合金,研究合金的相结构,以及Co元素部分取代Ni元素对合金的气态储氢性能和电化学性能的影响。结果表明,合金主要由LaNi5、LaNi2以及La2MgNi9相组成。合金电极的最大放电容量分别为346.7mAh/g（x=0.15）、320.3mAh/g（x=0.25）、363.0mAh/g（x=0.35）和313.3mAh/g（x=0.45）,经过65个充放电循环后,合金电极的容量保持率从63.0%（x=0.15）增加到80.2%（x=0.35）,然后再下降到75.0%（x=0.45）。La0.7Zr0.1Mg0.2Ni3.15Co0.25Fe0.1合金具有较高的高倍率放电性能（HRD1200%=67.3）和较大的极限电流密度（IL=386.8 mA/g）,显示出其良好的电化学动力学性能。     

Ti对La_(0.7-x)Ti_xMg_(0.3)Ni_(3.5)(x=0.00,0.05,0.10)合金电极电化学性能的影响

在氩气保护下用悬浮熔炼制备La0.7-xTixMg0.3Ni3.5(x=0.00,0.05,0.10)储氢合金,研究Ti含量对合金电极电化学性能的影响。X射线衍射(XRD)分析表明,合金相主要由LaNi5、LaMg2Ni9和La2Ni3相组成。当x=0.10时,合金中有TiNi3相产生,随着Ti含量的增加,LaNi5、LaMg2Ni9和La2Ni3相的晶胞体积减小。电化学性能测试表明,合金电极最大放电容量分别为370 mAh/g(x=0.00)、331 mAh/g(x=0.05)和252 mAh/g(x=0.10);合金电极循环伏安特性曲线氧化峰电位随着Ti含量的增加而降低,表明Ti的加入使合金电极易于发生氧化反应。     

75%La(Ni_(0.85)Co_(0.15))_(5-x)(Mn_(0.4)Al_(0.3))_x+12.5%Mg_2Ni(x=0,0.3,0.6)合金储氢性能研究

利用高频感应熔炉制备摩尔比率为75%La(Ni0.85Co0.15)5-x(Mn0.4Al0.3)x+12.5%Mg2Ni(x=0,0.3,0.6)合金,测试合金的储氢性能,分析Mn、Al元素组合对合金储氢性能的影响。结果发现,合金均由多相组成,其中主相分别是CaCu5型的LaNi5相和PuNi3型的(La,Mg)Ni3相。随着元素(Mn,Al)含量增大,合金电极的循环稳定性有一定的改善,80次循环放电容量保持率从x=0时的59.1%提高到x=0.6时的74.5%。     

Al替代部分Ni对储氢合金La0.63Gd0.2Mg0.17Ni3.0Co0.3微观组织和电化学性能的影响

采用感应熔炼及退火处理制备的稀土-镁-镍系AB3.3型La0.63 Gd0.2 Mg0.17 Ni3.0-x Co0.3 A1x(x=0、0.1、0.2、0.3、0.4)储氢合金,系统研究了Al元素部分替代Ni后对合金的相结构和相组成及电化学性能的影响规律.X射线衍射(XRD)和显微电子探针(EPMA)方法分析结果表明...     

(La1-xNdx)2Mg(Ni0.8Co0.15Mn0.05)9(x=0～0.3)合金的储氢与电化学性能研究

采用高频悬浮感应熔炼方法制备(La1-xNdx)2Mg(Ni0.8Co0.15Mn0.05)9(x=0～0.3)系列合金,分析Nd部分取代La对合金的相结构、吸放氢性能和电化学性能的影响.结果表明,铸态合金的主相为具有六方CaCu5结构的LaNi5相,并存在具有立方MgCu2结构的LaNi2相以及LaMg3相.合金主相...     

热处理对贮氢电极合金La0.7Mg0.3Ni2.45Co0.75Mn0.1Al0.2的微结构与电化学性能的影响

研究了热处理时间对贮氢电极合金La0.7Mg0.3Ni2.45Co0.75Mn0.1Al0.2的微结构与电化学性能的影响。XRD分析结果表明,所有合金均由(La,Mg)Ni3与LaNi5两相构成,热处理并没有使该贮氢合金发生相变。电化学研究结果表明,随着热处理时间的延长,合金电极的最大放电容量与循环稳定性能均得到明显改善,而高倍率放电性能却逐渐恶化。     

La0.7Mg0.3-xTixNi2.8Co0.3(x=0.03,0.06,0.09,0.12)合金的储氢与电化学性能研究

用高频感应熔炼方法制备了La0.7Mg0.3-xTixNi2.8Co0.3(x=0.03,0.06,0.09,0.12)系列合金,并对其储氢和电化学性能进行测试.结果表明x=0.06时,合金储氢性能最好,气态储氢容量达1.2wt%,放电容量和比容量分别为336 mA.h.g-1,70.0%.     

La_(0.75)Mg_(0.25)Ni_(3.5-x)M_x(M=Si,Zn;x=0～0.5)储氢合金的相结构与电化学性能

研究Si和Zn元素分别部分替代Ni后合金La0.75Mg0.25Ni3.5-xMx(M=Si,Zn;x=0～0.5)的微观组织及电化学性能.X射线衍射(XRD)结果表明, La0.75Mg0.25Ni3.5-xSix合金由CaCu5型相、Ce2Ni7型相和LaMgNi4型相组成,随着Si含量增加,CaCu5型相明显增加.La0.75Mg0.25Ni3.5-xZnx合金由CaCu5型相、Ce2Ni7型相和LaNi3型相组成.随着Zn的增加,合金中Ce2Ni7型相逐渐减少,CaCu5型相和LaNi3型相则相应增加.电化学实验表明,2种元素的加入均使得合金的高倍率放电性能下降;Si的加入降低了合金最大放电容量和交换电流密度,但活化次数也随之减少,电化学循环稳定性提高.Zn元素的加入,对合金最大放电容量影响较小.     

La0.6CexNd0.4-xNi3.0Co0.2Al0.3(x=0~0.4)合金储氢性能研究

采用电弧炉熔炼方法制备La0.6CexNd0.4-xNi3.0Co0.2Al0.3(x=0～0.4)系列合金,并对合金的储氢性能和电化学性能进行测试。测试结果表明,合金在Ce=0时具有最高的电化学容量(284.2mAh/g)和储氢量(0.93wt%)。Ce的添加会降低合金放电容量,但是能够改善合金的循环稳定性能。     

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。     

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.     

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.