日粮调制对肥育猪生产效果的影响

为了确定养猪适宜的日粮调制方法，对湿拌料、湿拌浸透料和干粉料进了两次生产效果比较试验．试验Ⅰ将９０头５１ｋｇ左右的育肥猪（大白×荣昌）随机分为３组，Ａ组饲喂干粉料，Ｂ组饲喂湿拌料（料水比１：１．５），Ｃ组按Ｂ组处理后堆放３小时，让其被水浸透，然后再饲喂，Ａ、Ｂ、Ｃ３组的平均日增重分别为４１４．７ｇ，４３２．６ｇ和４５９．５ｇ；日采食风干料分别为２．０６ｋｇ，２．１３ｋｇ和２．２１ｋｇ；每增重１ｋｇ耗风干饲料为４．９８ｋｇ、４．９２ｋｇ和１．８２ｋｇ，耗ＤＥ６２．０９ＭＪ、６１．４２ＭＪ和６０．１２ＭＪ，耗ＣＰ７６１．３ｇ、７５３．０ｇ和７３７．２ｇ．试验Ⅱ将２０头断奶仔猪（长白×成华）分为两组，对照组饲喂干粉料，试验组喂湿拌料（料水比１：１．５），对照组日增重，平均每日采食风干料，每增重１ｋｇ耗风干料、ＤＥ和ＣＰ分别为４９７．０ｇ、１．７０ｋｇ、３．２４ｋｇ、４５．２１ＭＪ和５３６．５ｇ，试验组相应为５２６．５ｇ、１．７６ｋｇ、３．１７ｋｇ、４４．１３ＭＪ．５２３．９８ｇ．     

近交系NJS小鼠的生物学特性研究Ⅰ．繁殖性能与生长发育的观察

对作者培育的近交系ＮＪＳ小鼠的繁殖性能与生长发育进行观察，结果表明：ＮＪＳ小鼠的基代虽来源于ＫＭ远交群，但由于高度近交和定向选择，其产仔、泌乳等繁殖性能已大大下降。有关繁殖性能指标为：配产间隔２５．９±４．５／ｄ、胎间隔４７．１±１１．４／ｄ、窝产仔数７．６±２．６／只、离乳仔数６．２±２．３／只、离乳率８０．５±２５．２／％、初生个体重１．５５±０．１２／ｇ、泌乳力４４．６７±１７．１２／ｇ、离乳个体重１０．３５±０．９５／ｇ。３０、６０、９０日龄雄鼠个体重分别为：１７．０±２．１／ｇ、２７．８±１．７／ｇ、３１．８±２．１／ｇ，雌鼠分别为：１５．８±０．９／ｇ、２３．５±１．４／ｇ、２５．５±１．６／ｇ。与其他近交系相比较，ＮＪＳ小鼠的繁殖性能与Ｃ＿（５７）ＢＬ／６近似，比ＢＡＬＢ／ｃ、ＤＢＡ／２显著高（Ｐ＜０．０１）。离乳前后ＮＪＳ小鼠的生长速度与ＢＡＬＢ／ｃ近似，比Ｃ（５７）ＢＬ／６、ＤＢＡ／２显著快（Ｐ＜０．０１）。     

在酸性溶液中锰（Ⅱ）诱导过—硫酸盐的分解

锰（Ⅱ）诱导过—硫酸根离子（ＨＯＯＳＯ~－_３）分解速度定律是５０℃时在Ｈ_２ＳＯ_４介质中，它的速度常数分别为Ｋ_（Ｍｎ）＝（５．１±０．３）×１０~（－３）和（９．７±０．２）×１０（－３）Ｍ（－１／２）Ｓ（－１）．速度常数对阴离子的浓度和性质是敏感的．在１ＭＨ_２ＳＯ_４溶液中，△Ｈ≠和△Ｓ≠的值分别为３１±２ＫＪ·ｍｏｌ（－１）和－１９４±５Ｊ·ｍｏｌ（－１）·Ｋ（－１）．确定了锰（Ⅲ）的存在作为一个中间体和一短暂的产物．过二硫酸盐，作为一个次产物大体上从链终止用来估算链长．在所有数据计算基础上，认定这个机理与大多数金属诱导过一硫酸盐分解机理完全不同，并且对一些结果复杂情况作了祥细地推证．     

钯(Ⅱ)对显色体系DAoVMPM-V(V)-H3PO4-Mn(Ⅱ)-Tween60阻抑作用的研究

研究在酸性介质中钯（Ⅱ）阻抑试剂ＤＡｏＶＭＰＭ与Ｖ（Ｖ）显色反应的动力学参数,反应的表观速率常数Ｋ０＝２．２８５×１０－２ｍｉｎ－１,表观活化能Ｅａ＝６７．５１ｋＪ／ｍｏｌ。基于这种阻抑作用建立了一种测定钯的动力学光度分析法,Ｐｄ（Ⅱ）含量在０．５μｇ／２５ｍＬ～１０．０μｇ／２５ｍＬ能被准确检出,检出限为５．０×１０－９ｇ／ｍＬ。该方法灵敏度高,稳定性好,用于石钯渣和钯催化剂中钯的测定,本法的相对标准差ＲＳＤ为１．０‰～１．５‰,回收率为９６％～１０３％。     

无机还原剂铁（Ⅱ）──光泽精化学发光反应的研究

采用流动注射技术，研究了由Ｊｏｎｅｓ柱产生的铁（Ⅱ）与光泽精的化学发光反应，建立了新的测定铁的化学发光分析法．方法的检出限为４×１０－１２ｇ／ｍＬ铁，相对标准偏差为２．０％（２×１０－８ｇ／ｍＬ铁，ｎ＝１１），线性范围为１×１０－１１ｇ／ｍＬ～１×１０－５ｇ／ｍＬ．该法用于一些化学试剂和镁合金中痕量铁的测定，结果令人满意．     

大肠杆菌中人心钠素基因在P_L和T7启动子控制下的高效表达

将Ｐ１噬菌体的ｒｅｆ基因与人心钠素的嵌合基因ＲＥＦ－ＡＮＰ分别克隆入带Ｐ＿Ｌ启动子和Ｔ７启动子的两种表达载体，获得高效表达重组质粒ｐＺＪＭ１和ｐＺＪＭ４．ｐＺＪＭ１转化ＤＨ５α、ｐＺＪＭ４转化ＨＭＳ１７４，在表达细菌培养到ＯＤ＿（６００）＝０．２５时分别进行温度诱导和化学诱导，快速凝胶扫描结果表明ＲＥＰ－ＡＮＰ表达量各占细菌可溶性总蛋白的６７．１％和２８．１％；在ＯＤ＿（６００）＝１．０或２．０时进行诱导，均能维持高效表达；且温度诱导的表达效率总是优于化学诱导。     

铀试剂Ⅲ离常数的测定

用 ｐＨ测定法、溶解度法和分光光度法测定了铀试剂Ⅲ的八个离介常数,在离子强度等于０．１时它们分别为： Ｋ１＝１３±１．２; Ｋ２＝（２．４±１．１）×１０－２, Ｈ３＝（９．６±１．１）××１０－４;Ｈ４＝（３．３±０．１）× １０－５;Ｋ５＝（５．４±０．３）×１０－８;Ｋ６＝（１．０±０．２）×１０－９;Ｋ７＝（４．７±０．４）×１０－１１;Ｋ８＝（４．７±０．５）×１０－１３。并根据这些常数作出了试剂离介形式随ＰＣＨ的分布图。     

2,4,7-三硝基-9-芴酮阴极特性研究

研究了以１ｍｏｌ．Ｌ＾－１ＬｉＣｌＯ４／ＰＣ＋ＤＭＥ（１：１）为电解液的ＴＮＦ／Ｌｉ电池的性能和放电机理。电池以０．５ｍＡ．ｃｍ＾－２放电时比容量为８４７．６Ａｈ．ｋｇ＾－１,比能量为６．７＊１０＾６Ｊ．ｋｇ＾－１。该电池存在自放电现象,开状下放置一个月后,容量损失掉３６．２％。     

十二钨硅酸及其6DMF,8DMSO加合物的标准生成焓测定

通过一系列滴定量热测定，求得了２９８．１５Ｋ时十二钨硅酸及其６ＤＭＦ、８ＤＭＳＯ加合物的标准生成焓，其数值分别为－（１３．１４±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１、－（１３．６１±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１及－（１３．８６±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１。     

广西部分杧果园土壤营养状况及田间施肥试验

在对广西田阳、田东、钦州和防城果主要产区的代表性果园（１６个）进行土壤农化性状调查的基础上,进行Ｎ、Ｐ、Ｋ、Ｍｇ田间施肥试验,试验小区５个,随机区组排列,每小区５株,重复４次。土壤调查表明,供试果园土壤有机质含量（ｇ／ｋｇ）１１．４４～１２．０９,全Ｎ量（ｇ／ｋｇ）０．５３～０．９２,全Ｐ量（ｇ／ｋｇ）０．２０～０．３８,全Ｋ量（ｇ／ｋｇ）５．１４～１８．４３。速效Ｐ（ｍｇ／ｋｇ）０．８～２６．２,速效Ｋ（ｍｇ／ｋｇ）３３．９～５３．３。田间试验结果表明,施Ｎ、Ｋ配镁肥,能改善果植株的营养状况。施钾配镁肥,落果率可减少２０．８７％。在试验施肥条件下,单株产量提高０．８５千克／株。增施Ｎ、Ｋ配施Ｍｇ肥,单果重达３２３ｇ,此外施Ｋ,可提高果实粗蛋白和ＶＣ含量,可食部分略有增加。Ｎ２ＰＫ２Ｍｇ处理的果在室内气温２６．５℃～３２．５℃,６４％～８９％的相对湿度下,可贮藏２３ｄ。     

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

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