海南省若干树木中的微量元素

海南地处热带地区,土壤富铝化作用强烈,元素生物小循环迅速,但树木中Ｃｄ,Ｎｉ,Ｃｕ,Ｚｎ,Ｐｂ,Ｈｇ的质量分数在正常范围值,其ｗＢ因树木种类不同而有明显差异,荔枝的ｗＢ一般较高,Ｃｄ,Ｎｉ,Ｐｂ居各树木之首;而南亚松ｗＢ通常较低,Ｃｄ,Ｎｉ,Ｃｕ,Ｚｎ,Ｐｂ为各树木最低．树木对必需元素Ｚｎ,Ｃｕ的吸收量明显高于非必需元素Ｐｂ,Ｃｄ,Ｎｉ,Ｈｇ,大多数树木的化学组成（ｗＢ）是：Ｚｎ＞Ｃｕ＞Ｐｂ＞Ｃｄ＞Ｎｉ＞Ｈｇ．Ｈｇ,Ｃｄ,Ｎｉ的质量分数大多叶高于枝,而ｗ（Ｃｕ）大多数是枝高于叶．同种树木的ｗＢ还与生态环境有关     

红树杆物落叶碎屑对水中重金属吸附的初步研究

研究四种红树植物落叶碎屑对水环境中重金属Ｃｕ、Ｐｂ、Ｎｉ和Ｃｄ离子的吸附作用．结果表明：１）在单离子处理条件下,白骨壤叶对Ｐｂ、Ｃｄ的吸附能力较强;而秋茄叶对Ｃｕ、Ｎｉ的吸附能力较强．２）在相同离子浓度下,拒盐植物（秋茄、红海榄）与泌盐植物（白骨壤、桐花树）落叶碎屑对不同重金属吸附能力具有一定差异：拒盐植物为Ｃｄ＞Ｐｂ＞Ｃｕ＞Ｎｉ;而泌盐植物为Ｐｂ＞Ｃｄ＞Ｃｕ＞Ｎｉ．３）随着水中重金属浓度增加（２～５ｍｇ／Ｌ）落叶碎屑对重金属吸附量随之增大,表明红树落叶碎屑对重金属的吸附具有较大的潜在容量．４）多种重金属离子共存下,四种植物落叶对不同离子的吸附量均表现为Ｐｂ＞Ｃｄ＞Ｃｕ＞Ｎｉ     

党参中无机元素的组分分析

本文用电感偶合等离子发射光谱，原子吸收光谱分析了常参「Ｃｏｄｏｎｏｐｓｉｓ Ｐｉｌｏｓｕｌａ Ｎａｎｎｆ」中Ｆｅ，Ｃｕ，Ｚｎ，Ｍｎ，Ｃｒ，Ｍｇ，Ｃａ，Ｓｅ，Ａｌ，Ｐ，Ｂ，Ｓｒ，Ｈｇ，Ｐｂ，Ｂａ，Ａｓ，Ｃｅ，Ｂｅ，Ｎｉ，Ｎｂ，Ｖ，Ｔｉ，Ｃｏ，Ｇｅ，Ｍｏ，Ｃｄ，Ｌｉ，Ｔｅ，Ｗ，Ａｇ，Ｓｉ，Ｂｉ，Ｓｎ等３３种无机元素的组分含量。     

七种重金属对球形红杆菌生长的影响

文中研究了七种重金属离子对球形红杆菌生长的影响。实验表明，该菌对Ｐｂ３＋和Ａｓ５＋有很强的抗性，重金属化合物浓度达２０ｍｇ／１００ｍｌ时仍不影响该菌的生长；对Ａｓ３＋、Ｃｄ２＋、Ｃｒ５＋、Ｃｕ２＋、Ｈｇ２＋的抗性较前述三种重金属较差     

浙江治岭头金矿床成矿地球化学特征

治岭头金矿矿体主要赋存在中元古界陈蔡群变质岩系和上侏罗统磨石山组火山岩中。成矿元素组合为Ａｕ，Ａｇ，Ｓｒ，Ｔｉ，Ｃｏ，Ｓｎ，Ｍｎ，Ｌｉ，Ｖ，Ｃｒ，Ｗ，Ｇａ，Ｍｎ，Ｎｉ，Ｃｕ，Ｐｂ，Ｚｎ，Ｂａ，Ｎｂ，Ｆｅ，Ｓ，Ｓｉ，Ｏ等。蚀变带元素地球化学异常显示Ａｕ与Ａｇ，Ｃｕ，Ｐｂ，Ｚｎ，Ｓｎ，Ｍｎ异常有较好的相关性。矿床成矿元素侧向综合分带系列为：Ａｕ，Ａｇ，Ｚｎ，Ｃｕ，Ｐｂ，Ｍｏ，Ｓｎ，Ｃｒ，Ｃｏ，Ｎｉ，Ｍｎ；成矿元素的地球化学演化为Ｓｉ，Ｆｅ￣（２＋）→Ｆｅ￣（２＋），Ｐｂ，Ｚｎ，Ｃｕ，Ａｕ，Ａｇ，Ｍｎ，Ｓｎ→Ｃａ，Ｓｉ，Ｃｒ，Ｃｏ，Ｎｉ，Ｍｎ，Ａｕ是在约２００～３００℃时，由大量的黄铁矿和金属硫化物沉淀后络合物解离而停积成矿的。     

用蛭石吸附法脱除污水中的重金属

以蛭石作为吸附剂,处理水中的重金属（Ｃｄ、Ｃｕ、Ｆｅ、Ｐｂ、Ｎｉ）．对７０℃的中性水,吸附时间３ｈ,蛭石对浓度为１０ｍｇ／Ｌ的镉、铜、铁、镍、铅的脱除率为９９％左右。用实验方法研究了蛭石在所选条件下达到吸附平衡时对上述金属离子的吸附容量和对金属离子混合溶液的处理效果。结果表明,蛭石对Ｃｄ、Ｃｕ、Ｆｅ、Ｐｂ、Ｎｉ的吸附容量分别为２．０,３．５,５．５,１．０,２．５（ｍｇ／ｇ）．采用固定式吸附柱脱除石油污水中的重金属,镍脱除率为３４．２％,铅脱除率为４３．６％,其余三种脱除率均在７０％以上。若消除其他被吸附物质的干扰,可将水中上述金属离子的含量处理至生活用水标准。     

云南17种菊科植物微量元素含量特征研究

本文论述了云南１７种菊科植物９个元素含量的特征．元素含量顺序有１０种植物遵守Ｆｅ，Ａｌ＞Ｚｎ＞Ｍｎ＞Ｃｕ＞Ｐｂ＞Ｃｒ＞Ｎｉ＞Ｍｏ的规律，有５种植物遵守Ｆｅ，Ａｌ＞Ｍｎ＞Ｚｎ＞Ｃｒ＞Ｎｉ＞Ｍｏ的规律．元素含量的相对离散度为：Ａｌ＞Ｆｅ＞Ｍｏ＞Ｎｉ＞Ｍｎ＞Ｐｂ＞Ｃｕ＞Ｚｎ＞Ｃｒ．反映元素含量顺序与相对离散度顺序不完全匹配．元素Ｃｕ，Ｍｎ，Ｐｂ，Ｃｒ，Ｍｏ，Ｚｎ含量的频数分布总体为正态．Ｆｅ，Ｎｉ，Ａｌ含量的频数分布为正偏态型，并呈现高狭峰．元素Ａｌ，Ｆｅ，Ｍｎ，Ｎｉ含量间呈明显正相关；Ｆｅ与Ｃｕ，Ｚｎ，Ｍｏ，Ｃｒ间呈负相关．根据统计分级聚类分析，１７种植物分５组，１，２组共１１种植物，显示了植物对Ｃｕ，Ｆｅ，Ｐｂ，Ｎｉ，Ｃｒ吸收积累的聚类特征．第５组的小一支箭和臭灵丹，显示出对Ｆｅ，Ａｌ或Ｎｉ，Ｃｕ，Ｐｂ吸收积累的特殊性     

大鹏湾沉积物重金属污染的初步研究

用电感耦合等离子焰光谱技术测定大鹏湾４个采样站位沉积物岩芯中Ｐｂ，Ｍｎ，Ｎｉ，Ｃｒ，Ｃｄ和Ｆｅ，Ｍｇ，Ｚｎ，Ｃｕ，Ｃｏ共１０种重金属元素的浓度－深度关系，并根据相应的沉积速率分析了该海域的污染史．     

Cu（Ⅱ），Pb（Ⅱ），Zn（Ⅱ），Cd（Ⅱ）痕量金属离子的浮选分离法研究

以焦磷酸根（）为配体，十六烷基三甲溴化铵（ＣＴＭＡＢｒ）为鼓泡剂，对Ｃｕ（Ⅱ），Ｐｂ（Ⅱ），Ｚｎ（Ⅱ），Ｃｄ（Ⅱ）等４种金属离子的浮选分离进行了研究。探讨了ｐＨ值、氮气流速、的浓度、ＣＴＭＡＢｒ的浓度、金属离子浓度对浮选率的影响．找到了其最佳分离条件，对Ｃｕ（Ⅱ）－Ｃｄ（Ⅱ），Ｐｂ（Ⅱ）－Ｃｄ（Ⅱ），Ｚｎ（Ⅱ）－Ｃｄ（Ⅱ）等二元组分进行了较好的分离。     

聚硫醚主链的咪唑型螯合树脂合成及吸附性能

通过聚环硫氯丙烷与咪唑进行高分子反应，合成了以聚硫醚为主链、侧链带有咪唑基团的螯合树脂（简称ＰＳＩＭ）。该树脂对Ａｕ（Ⅲ）、Ｐｄ（Ⅱ）、Ｐｔ（Ⅳ）、Ａｇ（Ⅰ）等贵金属离子具有很强的吸附能力，吸附容量（ｍｍｏｌ金属离子每克树脂）分别达６．０１、５．５３、３．４３和４．７３，对Ｈｇ（Ⅱ）的吸附次之，对Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）、Ｃｄ（Ⅱ）很弱，而对Ｐｂ（Ⅱ）不吸附，并考察了介质酸浓度对ＰＳＩＭ树脂吸附性能的影响     

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。     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~