药用蜈蚣幼体人工饲养的初步研究

在人工条件下，幼体蜈蚣的生长同曲线呈两段性，前慢后快；体长与体重的关系曲线也呈两段性。群养时每次摄食量约为总体重的１／３凰单独饲养时是群养的３倍左右。不同食物对幼体蜈蚣生长的影响不同。食物转化率前期为１６．４２％，后期为２８．２３％。食物消耗与生长关系的回归系数ｂ＝０．３０７６．取食后体重首日下降最快，至第８天趋向恒定。５０条左右群养时成活率最高。     

新疆额敏河伊犁鲈年龄及生长研究

以额敏河集的５０条伊犁鲈鱼为基础,研究了额敏河伊犁鲈体长与鳞径的关系Ｌ＝１．８６２Ｒ－５．１２５和体重与体长的关系Ｗ＝０．０６９５Ｌ＾２．３８３３,并应用Ｖｏｎ－Ｂｅｒｔａｌａｎｆｆｙ生长方程拟合其生长规律,其主要生物学参数为：Ｌ＝∞＝２５．２９ｃｍ、Ｋ＝０．２０４、ｔ０＝－０．６１８（年）、Ｗ＝２２５．６４Ｇ;拐点年龄ｔｉ＝３．６４龄、拐点体重Ｗｉ＝６１．７３ｇ、拐点体长Ｌｉ＝１４．６８ｃｍ;最大寿命为１１．０６龄;捕捞体长１４．６８ｃｍ,体重７４．６８ｇ以上的群体,可以有效地控制种群过度增长。     

甜菜碱对肉用仔鸡生长性能的影响

将２００只１日龄艾维茵肉用仔鸡随机分为４组（Ｉ、Ⅱ、Ⅲ、Ⅳ组），每组５０只，饲喂４种不同处理的日粮５周（含甜菜碱０、５×１０－４、１×１０－３、１．５×１０－３），自由采食和饮水，测定增重和饲料消耗。结果表明，３周龄时各组鸡平均体重差异不显著（Ｐ＞０．０５），但在５周龄时饲喂５×１０－４甜菜碱的鸡增重提高１６．５％（Ｐ＜０．０１），并使饲料消耗降低１．２％，其他试验组差异不显著。可见饲料中添加甜菜碱对提高肉用仔鸡生长性能、降低饲料消耗具有显著的经济效益。     

海狸鼠体重、体长及消化系统的生长发育研究

测定了不同时龄海狸鼠的体重、体长、肠道长度及胃和盲肠的最大容积。其结果为，海狸鼠体重的生长发育高峰在１２０日龄，体长的生长高峰在９０日龄，体长的增长要慢于体重的增长，２４０日龄时体重为初生重的１８．７５倍，体长仅为初生时的４．２３倍。小肠的长度自出生便迅速生长，这种快速生长一直持续到４５日龄左右，但其生长系数不大，这说明小肠在胚胎时期已发育到较成熟的程度；盲肠容积的生长在６０～１２０日龄最快，１２０日龄时为初生时的１０倍左右，２４０日龄仅为初生时的１３倍；胃的生长发育比盲肠的生长慢，２４０日龄时的最大容积为初生时的５．５倍，且生长集中于０～１２０日龄。体重与体长、体重与消化道各指标间的相关系数均大于０．９６，并建立了以体重为自变量，其它指标为依变量的９个回归方程。     

嘉陵江瓦氏黄颡鱼的繁殖生物学

通过对瓦氏黄颡鱼周年渔获物标本的生物学分析和对其产卵场的调查研究，结果表明，雌鱼的性成熟系数为２．３５％～３０．４４％，平均为１３．１２％；雄鱼的性成熟系数０．６５％～１．９８％，平均为０．９２％。５月中旬至７月中旬为其产卵期，盛期在６月，属于一次性产卵类型。最小性成熟年龄为２龄。最小性成熟个体雌鱼体长１１．３ｃｍ，体重２５．３ｇ；雄鱼体长１１．２ｃｍ，体重２４．１ｇ．繁殖群体雌雄性比为１：１．１７．体长１１．３～１７．９ｃｍ，体重２５．３～１０１．４ｇ的个体绝对繁殖力为１２４８～１２４１７粒，平均３８８３粒，与体长Ｌ的关系式为Ｆ＝３．３６７３×Ｌ￣（２．６４８３）与体重Ｗ的关系式为Ｆ＝５６．８０７０×Ｗ￣（１．０７５９）．成熟卵粒卵径为１．４１～１．８７ｍｍ．繁殖群体的年龄组成以３龄为主，２龄次之，以补充群体占优势，还提出了保护这一资源的建议．     

疏浚泥浆排放对渔业生产的影响及其对策研究：I对养殖？…

本文报道了河道疏浚泥浆排放对养殖鱼类生长、饲料转化率和池塘鱼产量影响的研究结果。室内试验结果表明，当水中泥浆达到一定浓度后，鱼的生长率和饲料转化率均随浓度的升高而下降，但鱼的种类不同，对泥浆水的耐受能力也不相同，其中白鲢鱼种（平均体重０．８０７ｇ）生长受影响的浓度最低，为０．１４４ｇ／ｌ，鲫鱼种（平均９．８８９ｇ）次之（０．２５６ｇ／ｌ），草鱼种（平均１．３７３ｇ）最高（０．４４８ｇ／ｌ），这除与     

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）。     

根田鼠种群年龄和繁殖的研究

利用主成分分析方法，对根田鼠体重、体长和头骨等１７项生长指标进行筛选，以确立根田鼠年龄划分标准，通过分析，体重的因子负荷量最大，且在野外易于准确称重，操作方便，可用作年龄组划分指标。同时结合繁殖状况，将根田鼠划分为４个年龄组：的体（体重＜１９．０ｇ）、亚成体（１９．０ｇ≤体重＜３７．０ｇ）、成体（３７．０ｇ≤体重＜５１．０ｇ）、老体（体重≥５１．０ｇ）。经统计检验，相邻组间差异显著。根田鼠种群８月亚成体比例较高，１１月成体、老体比例较高；８月仍处于繁殖盛期，繁殖期延续到１１月中旬，胎仔数５．２（４～７）。     

花鼠幼仔的生长发育研究

通过对花鼠的室内笼养试验，系统地观测了花鼠幼仔的出生及生长发育过程．结果表明：初生鼠体重平均为雌鼠３．８３±０．０７ｇ，雄鼠３．８６±０．０９ｇ；雌雄仔鼠性比为１∶１；仔鼠睁眼时间平均为２９．４７±０．４３ｄ，下门齿１７～１８ｄ长出，上门齿２３～２６ｄ长出，３５～４０ｄ后独立生活．出生到独立生活，仔鼠的存活率为６４．７１％；初生到４０日龄仔鼠的体重、体长及尾长均随日龄呈线性增长，回归方程为：体重：Ｙ＝０．５６Ｘ＋３．９４（ｒ＝０．９９５１）；体长：Ｙ＝１．１２Ｘ＋４７．８９（ｒ＝０．９８７２）；尾长：Ｙ＝１．７３Ｘ＋１８．９１（ｒ＝０．９７６９）     

嘉陵江西河赤眼鳟的生长研究

赤眼鳟属中小型经济鱼类，在筑坝河段生长较快．体长与体重的相关关系为：Ｗ＝００１３８９８Ｌ３０６６８（ｒ＝０９３２０７）；体长和体重生长方程为：Ｌｔ＝６７２１３１［１－ｅ－０１４６４（ｔ＋０９９２５）］，Ｗｔ＝５５９０４９２［１－ｅ－０１４６４（ｔ＋０９９２５）］３０６６８；体重生长拐点ｔｒ＝６６，拐点体重为１６４４１５ｇ．讨论了地方种群间的生长差异，探讨了资源利用状况和保护措施．     

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.     

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.     

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.     

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.     

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