广西英罗港红树林区水体浮游动物的种类

分析了广西英罗港红树林区1992年6月和11月调查所得的样品,经鉴定有浮游动物26种。其中主要的种类有球型侧腕水母、拟细浅室水母和亨生莹虾等。     

厦门港球型侧腕水母染色体组型

报道厦门港球型侧腕水母的染色体制备方法及核型分析结果,球形侧腕水母染色体数目2n =20,可配成15对同源染色体：8对为中部着丝点（m）,4对为亚中部着丝点（sm）,1对为亚端部着丝点(st）,2对为端部着丝点(t),其核型公式为2n=30＝16m 9sm 2st 4t,NF=54,第2对染色体为随体染色体。     

九龙江口水螅水母、管水母、钵水母和栉水母类的生态研究

本文材料系1979年8月至次年8月在九龙江口采集的。本调查区的水母类总个体数周年有二个高峰;种类数季节变化全年有一个高峰;主要种类有印度八拟杯水母、帽铃水母、五角水母、双生水母和球型侧腕水母。按照水母类的生殖方式、数量分布以及海况水文条件的关系,可将本调查区的水母分成五个生态类群:河口暖水性、河口暖温性、沿岸暖水性、沿岸暖温性和大洋广暖水性等。它们的季节演替与外海水、沿岩水和淡水水系的消长有着密切的关系。     

青岛近岸海域小型水母群落结构特征及其与环境因子关系

以2020年8—9月在青岛近岸海域进行的调查数据为基础,对该海域海水水质进行评价,分析该海域小型水母的群落结构特征及其与环境因子的关系.结果表明,所调查海域的水质质量较好,共发现小型水母10种,其中浅水Ⅰ型网10种,浅水Ⅱ型网7种;浅水Ⅰ型、Ⅱ型网获得的小型水母平均丰度分别为26.5,23.0 ind·m^-3;该次调查小型水母的优势种为半球美螅水母(Clytia hemisphaerica)、五角水母(Muggiaea atlantica)、双生水母(Diphyes chamissonis)、薮枝螅水母(Obelia spp.)和球型侧腕水母(Pleurobrachia globosa).浮游动物个体密度、底层叶绿素a、表层悬浮物和无机氮是影响该海域小型水母种类数和个体密度的主要环境因子.     

浙江北部海区口虾蛄繁殖和摄食习性的初步研究

本文是浙江北部海区口虾站Ｏｒａｔｏｓｑｕｉｌｌａｏｒａｔｏｒｉａ（ＤｅＨｕａｎ）繁殖与摄食习性的研究结果。根据卵巢成熟系数、食物种类组成、摄食强度等的周年变化规律，结果认为：每年的３－５月是口虾蛄的成熟期；６－７月为产卵期。一年性成熟一次，卵巢成熟系数４月份最高；最小性成熟个体８０ｍｍ左右。口虾蛄为肉食性捕食动物，食性组成较杂，以鱼虾类为主。６月和１２月摄食强度最大，８月份摄食强度最小。     

秋冬季生殖真鲷仔、稚、幼鱼摄食习性与生长的研究

本文分析了秋冬季生殖真鲷仔、稚、幼鱼的摄食和生长。结果表明，在水温为２０℃时，真鲷仔鱼约经６０～６５小时左右开口摄食，开口饵料为牡蛎幼虫和小轮虫。以后，随着鱼体的生长，摄食桡足类和卤虫无节幼体的比例迅速增加，全长２０毫米以上的个体可摄食鱼糜。对３１２尾仔、稚、幼鱼观察结果，在实验条件下，其摄食率高达９８．１％。摄食强度具明显的昼夜节律，以下午１６∶００摄食强度最高，上午８∶００其次，仔、稚鱼阶段夜间完全不摄食，表现出明显的昏晨摄食习性。对２００尾仔、稚、幼鱼的全长、体重、摄食量和日龄的回归方程进行了计算，其摄食量和体重的回归方程为ｙ＝－０．３６８６＋０．１３３６ｘ，全长与日龄的关系式为ＴＬ＝１．４９３５ｅ￣（０．０２３Ｄ），体重与日龄的回归方程可用ｗ＝５．０９９８×１０￣（－２）ｅ￣（０．２０５４Ｄ）表示，全长和体重的关系式则为ｗ＝２．２２９２×１０￣（－３）Ｌ￣（３．６４４６）。     

东山湾叫姑鱼食性研究

本文分析了东山湾叫姑鱼的摄食习性、食料生物组成和摄食强度的季节变化。结果表明：东山湾叫姑鱼系广食性底层鱼类，以底栖生物食性为主，兼食游泳动物。长尾类、短尾类、鱼类和多毛类是叫姑鱼食料中的优势类群。食料生物组成随季节而变化。摄食率秋季最高（７４．１％）、春季最低（３９．８％）；胃饱满系数夏季最高（１１．２‰）、春季最低（７．５‰）。其生殖活动对摄食行为没有影响。     

鱼类早期生活史的营养与摄食

鱼类早期生活史可划分为胚胎期、仔鱼期和稚鱼期,其营养包括内源性、外源性和混合性三种类型。仔鱼必须在卵黄耗尽前的短时间内建立起外源性摄食,否则,便进入饥饿期。仔鱼的初次摄食率和摄食强度均取决于仔鱼的摄食效率,并随着日龄的增加而增加。摄食节律主要受光照强度的影响。仔鱼对饵料的选择随着日龄的增加而变化,同时与饵料的大小、种类、密度等因素有关。     

高体Shi的摄食与温度,透明度的关系

高体Ｓｈｉ的摄食与温度，透明度有密切关系。冬季水温代于１２℃，不摄食；水温高于１３℃，开始摄食；春季水温上升，摄食量变大；夏季水温为２５－２７℃时，日摄食量达到最大；秋季水温下降，摄食量逐渐减少。     

广东深圳大鹏湾的桡足类腹刺纺锤水蚤对链状亚历山大藻摄食的研究

在不同条件下，大鹏湾浮游动物优势种腹刺纺锤水蚤对链状亚历山大藻的摄食实验表明，摄食率随饵料浓度的增加而增大，而当达到最大值后，饵料浓度继续增加，摄食率反而下降，温度为１５℃、２０℃、２５℃时，最大摄食率亦随温度增高而增大，且温度高时在低饵料浓度情况下即可达到最大摄食率，链状亚历山大藻虽能发先，但影响腹刺纺锤水蚤摄食的主要是光照的长短，在由链状亚历山大藻和亚心形扁藻组成的混合饵料中，腹刺纺锤水蚤偏食后者，它对二者的理论摄食模型为：ｙ＝１２７０７．６８－２９０７３ｘ＋０．０００１８０５５ｘ￣２（ｒ＝０．９９８９）（ｙ为对链状亚历山大藻的摄食率，ｘ为亚心形扁藻浓度）。     

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