层状金属氧化物的离子交换性能研究

本文利用ＸＲＤ，ＳＥＭ，ＤＴＡ及ＢＥＴ等现代仪器，研究了Ｋ－Ｚｎ－Ｔｉ层状金属氧化物（ＬＭＯ）经ＨＡＣ，ＮＨ４Ｃｌ交换前后的基本性能。结果表明：该ＬＭＯ具有良好的离子交换性能，其面网间距由０．７８ｎｍ分别增加到０．８６ｎｍ和０．８８ｎｍ．同时，比表面积由２７ｍ２／ｇ分别增加到３０ｍ２／ｇ和５９ｍ２／ｇ，可望作为大孔分子筛的制备原料。     

甘蓝型油菜萝卜质不育系恢复材料Ad-6(F4)测交二代恢复株TCF2的快繁及生根

油菜萝卜胞质不育系恢复材料Ａｄ－６（Ｆ４）测交二代恢复株ＴＣＦ２,在ＭＳ附加５ｍ ｇ／Ｌ６－ＢＡ＋ ０．５ｍ ｇ／Ｌ ＮＡＡ,３ｍ ｇ／Ｌ ６－ＢＡ＋ ０．２ｍ ｇ／Ｌ ＮＡＡ,３ｍ ｇ／Ｌ ６－ＢＡ＋ ０．３ｍ ｇ／Ｌ ＮＡＡ＋６００ｍ ｇ／Ｌ水解乳蛋白以及５ｍ ｇ／Ｌ６－ＢＡ＋ ０．３ｍ ｇ／ＬＮＡＡ＋ ５ｍ ｇ／ＬＡｇＮＯ３ 的不同培养基上诱导丛生芽,结果表明５ｍ ｇ／Ｌ６－ＢＡ＋ ０．３ｍ ｇ／ＬＮＡＡ＋ ５ｍ ｇ／ＬＡｇＮＯ３ 对ＴＣＦ２ 诱导丛生芽有较好的效果．小芽生根培养基为１／２ＭＳ效果最好．     

铁电极活性粉的制备及其高倍率放电性能的研究

采用无机合成技术，通入Ｏ２及滴加ＮａＯＨ溶液，加热硫酸亚铁与ＮＨ４ＮＯ３的混合溶液使部分二价铁被氧化成三价，沉淀物经过滤和干燥后，在氩气氛下６７０℃焙烧１ｈ得到铁电极活性粉．经Ｘ射线衍射分析，该活性粉的成分是单相四氧化三铁．利用该活性粉所制备的铁电极，在不添加任何添加剂的条件下，以１００ｍＡ／ｇ放电的容量为２４５．５ｍＡ·ｈ／ｇ．该电极的高倍率放电性能好，以１２０ｍＡ／ｇ放电的容量为２１６ｍＡ·ｈ／ｇ．     

Cu(NH_3)_4Ag(SCN)_3的晶体结构

Ｃｕ（ＮＨ３）４Ａｇ（ＳＣＮ）３晶体的空间群是Ｃ３ Ｓ－Ｃｍ，其晶胞参数为：ａ＝１１．４６Ａ，ｂ＝２１．５５Ａ，Ｃ＝５．５７Ａ，β＝１０９°２０′，Ｚ＝４（ρｏｂｓ＝２．１９５ｇ／ｃｍ３，ρｃａｌｃ＝２．０７６ｇ／ｃｍ３）。在这个晶体结构中，Ａｇ原子由４个Ｓ原子按四面体方式配位，每两个ＡｇＳ４四面体通过共棱而成对地联结；两个ＳＣＮ的另一端Ｎ原子在Ｃｕ-Ｎ（ＮＨ３）正方形的上下方，使Ｃｕ具有正方双锥的配位构型。     

福建和溪亚热带雨林凋落物及残留物研究

探讨福建和溪亚热带雨林凋落物产量和地表残留物累积及其动态．结果表明；该雨林年凋落物量为７５５．４３ｇ／ｍ２（年变率为１．１７），其中叶为５１７，３５ｇ／ｍ２，枝为１９１．７５ｇ／ｍ２，花为２１．７６ｇ／ｍ２和果为２４．５７ｇ／ｍ２．影响凋落物月分布的主要因素是降雨及植物的物候期．月凋落物量（ｙ）与月降雨量（１）呈正相关（ｙ＝４６．２８９４＋０．１２０６ｙ，，ｒ＝０．５１０４，ｄｆ＝３４，ｐ＜０．０１）．林地残留物现存累积量随季节的不同而异，平均为４２６．２０ｇ／ｍ２（年分解常数Ｋ＝１．８７），其中叶３０７．６４ｇ／ｍ２，枝１０６．７７ｇ／ｍ２，花０．６０ｇ／ｍ２和果１１．１９ｇ／ｍ２．     

SiC/Al_2O_3/Al-Si 复合材料的组织结构和性能

通过Ｘ－射线衍射、光学显微检验和扫描电子显微镜观察，研究了由Ａｌ－Ｍｇ－Ｓｉ合金高温直接氧化形成的ＳｉＣ／Ａｌ２Ｏ３／Ａｌ－Ｓｉ复合材料的相组成和显微结构，分析了工艺参数和材料显微结构对其力学性能的影响。实验结果表明，材料抗弯强度可高达５００ＭＰａ、断裂韧性达５．０８ＭＰａ·ｍ１２，致密度高达９８．４１％。     

吸光度线性扩展法测定镨钕钐

用吸光度线性扩展法测定镨、钕、钐．基于待测元素特征吸收峰下的吸光度在纪录仪上线性放大，提高了测定的灵敏度、准确度，扩大了测定浓度范围．分别选用的最大吸收波长是：λＰｒ＝４４４．７ｎｍ，λＮｄ＝７９４．２ｎｍ，λＳｍ＝４０１．７ｎｍ；吸光度相应峰高和浓度呈线性关系的范围是：Ｐｒ３＋为（０．２０～８．６）×１０－６ｍｏｌ／Ｌ；Ｎｄ３＋为（０．２０～２．４）×１０－６ｍｏｌ／Ｌ；Ｓｍ为（０．２０～３．０）×１０－５ｍｏｌ／Ｌ．在选用１０ｃｍ比色皿时，测定灵敏度为：Ｐｒ３＋为１．１μｇ／ｍｌｍｍ，Ｎｄ３＋为０．２２μｇ／ｍｌｍｎ，Ｓｍ３＋为４．６μｇ／ｍｌｍｍ．待测元素与稀土杂质浓度比为５１时无干扰，１１时只有个别元素有一定干扰．     

武夷山甜槠群落氮、磷的累积循环

讨论了中亚热带武夷山先峰岭５１龄甜槠Ｃａｓｔａｎｏｐｓｉｓｅｙｒｅｉ（Ｃｈａｍｐ．ｅｘＢｅｎｔｈ．）Ｔｕｔｃｈ．群落的氮、磷元素的累积和循环．测定结果表明：群落现存量中含有的氮、磷总量分别为１５５．５４９ｇ／ｍ２和５．５３５ｇ／ｍ２，其中地上部分别为１２７．１１７ｇ／ｍ２和４．４６３ｇ／ｍ２；地下部分别为２８．４３２ｇ／ｍ２和１．０７２ｇ／ｍ２．甜槠群落氮、磷元素的生物循环中，年吸收量分别为９．４５８ｇ／ｍ２．ａ和０．４３４ｇ／ｍ２．ａ，存留量分别为４．４８８ｇ／ｍ２．ａ和０．１９９ｇ／ｍ２．ａ，归还量分别为４．９７０ｇ／ｍ２．ａ和０．２３５ｇ／ｍ２．ａ．它们的氮含量均大小磷含量，周转期氮４３年，磷４０年，氮元素周转比磷元素慢     

SLUTSKY定理的推广

Ｓｌｕｔｓｋｙ定理指出：如果随机变量序列｛Ｘ１ｎ｝，｛Ｘ２ｎ｝，…，｛Ｘｍｎ｝分别依概率收敛到ｍ个有限常数ａ１，ａ２，…，ａｍ，那么任意一个有理函数Ｒ（Ｘ１ｎ，Ｘ２ｎ，…，Ｘｍｎ）也依概率收敛到常数Ｒ（ａ１，ａ２，…，ａｍ），只要Ｒ（ａ１，ａ２，…，ａｍ）有限．本文从两个方面推广了这一结果：第一，若上述随机变量序列分别依概率收敛到随机变量Ｘ１，Ｘ２，…，Ｘｍ，ｇ（ｘ１，ｘ２，…，ｘｍ）是ｍ维欧氏空间Ｒｍ上的连续函数，则ｇ（Ｘ１ｎ，Ｘ２ｎ，…，Ｘｍｎ）依概率收敛于ｇ（Ｘ１，Ｘ２，…，Ｘｍｎ）．第二，若上述随机变量序列分别收敛到ｍ个有限常数ａ１，ａ２，…，ａｍ，又Ｂｏｒｅｌ可测函数ｇ（ｘ１，ｘ２，…，ｘｍ）在点（ａ１，ａ２，…，ａｍ）处连续，则ｇ（Ｘ１ｎ，Ｘ２ｎ，…，Ｘｍｎ）依概率收敛到ｇ（ａ１，ａ２，…，ａｍ）．     

武夷山甜槠群落的生物量和生产力

主要讨论武夷山先峰岭５１龄甜槠群落的生物量和生产力．测定结果表明：１９９２年１２月甜槠群落的现存生物量为４０７２８．１ｇ／ｍ２，其中地上部为３５０８２．０ｇ／ｍ２，占总量的８６．１４％，地下部为５６４６．１ｇ／ｍ２，占１３．８６％．甜槠群落１９９２年的净初级生产量为１３８１．６ｇ／ｍ２·ａ，其中凋落物产量为３７９．２０ｇ／ｍ２·ａ，占净初级生产量的２７．４５％．而用于植物自身生长的存留量为１００２．４ｇ／ｍ２·ａ，占７２．５５％．甜槠群落的生物量累积比为２９．４８，已达成熟林的比率关系．     

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.     

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。     

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.     

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.     

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.     

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with