浙江省古田山自然保护区3种无尾两栖动物肥满度的比较

为了解古田山自然保护区两栖动物的营养状况和健康状况,于2014年7—8月,在保护区内分别采集了华南湍蛙287只、淡肩角蟾53只和花臭蛙111只,采用非伤害性的形态学方法比较研究了其肥满度.结果显示:不同性别和不同年龄组的3种无尾两栖类的肥满度均存在显著性差异,雌性个体肥满度均优于雄性个体,而成体的肥满度则优于亚成体;此外,3个不同物种间的肥满度也表现出显著性差异,雄性的华南湍蛙和雌性的花臭蛙肥满度最佳,而淡肩角蟾肥满度最差.     

棘腹蛙的两性异形及雌性繁殖特征

为研究棘腹蛙的两性异形及雌性繁殖特征,测定了采自广西龙胜和贵州凯里棘腹蛙成体的体长、头宽、前肢长、后肢长、足长5项形态学指标及雌体的怀卵数量.用SPSS 20.0统计软件分析测量获得的数据.结果表明:成年雄性棘腹蛙体长、头宽、前肢长、后肢长、足长均值都较雌性棘腹蛙大,棘腹蛙存在显著的两性差异;雌雄两性前肢长、后肢长、足长与体长呈正相关,它们随体长的增长速率在雌雄间无显著差异;雄性体长对雌性体长的比值为1.08,棘腹蛙的两性异形程度为0.075,棘腹蛙怀卵数量与体长呈正相关.表明成年雄性棘腹蛙体长、头宽、前肢长、后肢长、足长均值都较雌性棘腹蛙大,且通过增加个体大小增加繁殖输出.     

中华蟾蜍两性异形研究

用采自牡丹江地区的86只(59♀♀,27♂♂)成体中华蟾蜍(Bufo gargarizans)进行两性异形研究.分别测量头体长、头长、头宽等6个形态特征指标并进行检验.结果表明:中华蟾蜍雌性平均头体长为(70.89±1.69)mm(n=59),雄性的平均头体长为(64.34±1.66)mm(n=27),雄性体长明显小于雌性,雌性头体长与雄性头体长的比值为1.102,且两性头体长存在显著差异.雌雄两性的头长、头宽、前臂及手长、后肢长与胫长等形态学特征均与头体长具有显著相关性.两性的胫长存在显著差异,头长、头宽、前臂及手长、后肢长、胫长随体长的生长速率具有明显差异.     

金线侧褶蛙的两性异形及雌性繁殖特征的研究

测定了金线侧褶蛙成体的8个主要形态指标和雌体的怀卵量．结果表明。各形态指标均与体长呈正相关，金线侧褶蛙雌体的体长和体重均显大于雄体．以体长为协变量的协方差分析表明。只有雄体的鼓膜径显大于雌体．而头长、头宽、眼径、前肢长和后肢长不存在明显的两性差异．雌蛙怀卵量与自身体重和体长成正相关．表明该蛙通过增加个体大小增加繁殖输出．     

湖南平江棘胸蛙两性异形和雌性个体生育力

测定了湖南平江棘胸蛙成体的体长、体质量、头长、头宽、前肢长、后肢长等形态指标以及雌体的怀卵数量．结果表明：棘胸蛙雄体体长和体质量显著大于雌体．以体长为协变量的多元方差分析表明,雌雄两性在局部形态上不存在显著差异．各局部形态特征指标与体长呈正相关,它们随体长的增长速率在雌雄间无显著差异．棘胸蛙雌体怀卵量与体长和体质量皆成正相关关系,表明棘胸蛙通过增加个体的大小增加繁殖输出．     

中国石龙子头、体大小的性二态

本文研究中国石龙子（Ｅｕｍｅｃｅｓｃｈｉｎｅｎｓｉｓ）头、体大小的性二态。成雄体长和体重略大于成雌，但在统计上无明显差异。雌雄亚成体相对头长，相对头宽和相对头高无显著差异。成雄相对头长、相对头宽和相对头高显著大于成雌和亚成体。亚成体相对头长、相对头宽和相对头高与成雌无显著差异。雄性性成熟后头部的生长显著大子雌性。     

衢州中国石龙子形态特征和雌体繁殖输出

通过报道浙江衢州中国石龙子成体形态特征的两性异形和雌体繁殖输出，测定了雌雄两性个体的体长、体重、头长和头宽、附肢长和腹长，除腹长无显著两性差异外，其他形态特征均表现为雄性个体大于雌性个体。衢州种群雌体年产单窝卵，平均窝卵数，窝卵重和平均卵重分别为16．8，8．767g和0．589g．     

粤北南岭无斑肥螈的雌雄异形及雌性繁殖的研究

报道了粤北南岭无斑肥螈(Pachytriton labiatus)的两性异形和雌性繁殖.性成熟两性个体全长、头体长和体重之间差异显著,成年雌体全长、头体长、体重显著大于雄性.成体头长、头宽、尾长没有显著差异.当雌体平均全长大于127.84mm,雄体平均全长大于121.24mm时,卵巢和精巢才开始明显发育.性腺表现出明显的季节性变化,5～8月为卵巢的快速生长期,8、9、10月份卵巢重量平均值最大,12月至翌年1月降为最低值,卵巢可以划分成4个发育时期,产卵盛期在9～10月份.     

长白山中国林蛙肥满度及体尺指标分析

对长白山中国林蛙的肥满度及体尺指标状况进行了调查分析,结果表明:长白山中国林蛙肥满度的变化范围为6.68～11.83,不同大小、性别的个体肥满度有一定差别,其总体变化规律为幼蛙>雄性成蛙>雌性成蛙.体质量与体长比随体长的增长而增大,最小(体长1.8 cm)0.28 g/cm,最大(体长8.0 cm)5.06 g/cm;雌蛙的体质量水平总体上小于雄蛙,但仅在较小成蛙样本间表现为差异显著.体质量与体长的增长呈幂函数相关,幼蛙、雌性成蛙和雄性成蛙分别具有不同b值(幂指数),其中幼蛙和雄性b<3,雌性成蛙b>3.     

中国臭蛙类一新种

通过形态学比较和12S、16SmtDNA序列比对分析,结果显示分布于浙江省西天目山的花臭蛙(Odorrana schmackeri Boettger,1892)与地模产地花臭蛙以及花臭蛙2个新隐种南江臭蛙和黄岗臭蛙之间存在显著差异,其主要鉴别特征为:1)雌性成体体长约为雄性的1.75倍;2)头长大于头宽,吻端钝尖;3)后肢前伸胫跗关节达眼鼻间;4)趾间全蹼,第4趾两侧及第2、3趾内侧蹼以缘膜达趾吸盘基部;5)背部褐色斑稀疏,形状、大小、排列不规则;6)四肢背面浅褐色横纹宽窄不一,胫部横纹4或5条;7)雄性具1对咽侧下外声囊,背面有肉粉色雄性线,第1指具乳白色婚垫;8)雌性成熟卵动物极棕褐色、植物极米黄色,卵径2.17mm左右.故将浙江省西天目山区的花臭蛙鉴定为一新种--天目臭蛙(Odorrana.tianmuii.sp.nov.).     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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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