叶用莴苣组织培养研究

以叶用莴苣(LactucasativaL)栽培品种的幼嫩叶片为实验材料,对叶用莴苣的组织培养进行了研究,探讨愈伤组织的形成、愈伤组织分化成芽和生根的条件.结果如下6BA和NAA的浓度影响叶用莴苣愈伤组织的形成、分化和生根培养,诱导愈伤组织的最适培养基为MS+6BA(0.5mg/L)+NAA(0.1mg/L),最适分化培养基为MS+6BA(0.5mg/L)+NAA(1.0mg/L),最适生根培养基为1/2MS+NAA(0.1mg/L).     

蒲苇愈伤组织的诱导和再生体系的建立

以蒲苇成熟种子为外植体,MS为基本培养基并附加不同激素组合,筛选出诱导蒲苇愈伤组织产生和分化的最佳培养基,成功建立蒲苇的再生体系．试验结果表明：蒲苇种子最佳灭菌方式是将种子灭菌前用无菌水浸泡24h左右,然后用75％酒精消毒20s,再用0．1％（W／V）氯化汞消毒灭菌10min．愈伤组织诱导的最佳培养基为MS＋2,4-D3．0mg/L＋6-BA0．1mg／L;愈伤组织分化的最佳培养基为MS＋6-BA 2．0mg／L＋NAA 0．1mg/L分化继代的最佳培养基为MS＋6-BA 1．5mg／L＋NAA 0．2mg/L;生根最佳培养基配方为1／2MS＋NAA 0．8mg/L＋6-BA 0．2mg／L＋（0．02％）AC．     

大叶饲料槐高频再生体系建立及试管苗工厂化生产

通过叶片外植体愈伤组织诱导和直接不定芽再生途径,建立了大叶饲料槐的高频再生系统,采用正交试验筛选出愈伤组织最适诱导培养基为;MS附加0．5mg／L 6-BA和1．0mg／L NAA;愈伤组织分化最适培养基为：MS附加2．0mg／L 6-BA和0．2mg／L NAA。叶片外植体直接分化最适培养基为：MS附加2．0mg／L 6-BA和0．1mg／L NAA;试管苗在1／2MS附加0．2mg／L IBA、0．1mg／L NAA和2g／L AC的培养基上生根率高达100％,移栽成活率达90％,从而实现了大叶饲料槐的工厂化生产．     

贴梗海棠组培快繁技术研究

对贴梗海棠的外植体进行了愈伤组织和植株再生体系研究．结果表明,带芽茎段为最适外植体;诱导芽的最适培养基为Ms＋6-BA1．0mg／L＋NAA0．2mg／L芽生长培养基为MS＋6-BA2．0mg／L＋NAA0．2mg／L;在1／2MS＋NAA0.3mg／L培养基上,生根率为90％．     

花叶如意叶愈伤组织的诱导及植株再生

研究花叶如意叶愈伤组织的诱导及分化条件．实验结果表明：诱导愈伤组织的培养基为MS 2,4-D1．0mg／L 6-BA2．0mg／L．在此培养基上,叶片比叶柄更易得到愈伤组织．叶愈伤组织的诱导时间过长易褐化,从而影响分化,其最适时间为20d．诱导愈伤组织分化的培养基为MS NAA0．2mg／L 6-BA2．0mg／L．根分化的培养基为1／2MS NAA0．5mg／L．     

鸡蛋花愈伤组织诱导和植株再生的研究

对以鸡蛋花叶片作为外植体进行愈伤组织诱导和植株再生研究,发现MS NAA0．1mg／L 6-BA 1mg／L对愈伤诱导效果最好,出愈率达96％;愈伤组织分化为芽时,MS NAA0．1mg／L 6-BA 2mg／L效果最好,分化率达98％．生根培养基为1／2MS NAA0．1mg／L．     

裂叶秋海棠的离体快速繁殖

利用野生裂叶秋海棠叶片及叶柄培养，通过两种方式获得大量再生植株。(1)直接从外植体表面诱导出不定芽，最佳诱导培养基为MS 6-BA 3mg／L，不定芽在培养基MS NAA0．5mg／L 6-BA0．5mg／L增殖成丛生芽．(2)先诱导出愈伤组织，再由愈伤组织分化出大量不定芽．最佳愈伤组织诱导培养基为MS NAA0．5mg／L 2，4-D0．5mg／L 6-BA0．5mg／L,愈伤组织不定芽分化培养基为MS 6-BA 1mg／L,试管苗在含1／5MS无机盐的培养基上生根，之后移栽成活率达85％。     

菜豆(双青35号)再生体系的建立

报道了双青35号菜豆不同外植体在含有不同激素的培养基上诱导、分化及生根情况,并建立其高效再生体系．研究结果表明：愈伤组织诱导和增殖培养基为MS＋6-BA2．0mg/L＋NAA2．0mg/L,不定芽再生培养基为MS＋6-BA2．0mg/L＋NAA0．2mg/L,生根培养基为1／2MS＋IAB3．0mg/L＋0．1％活性炭是较佳的．     

风车草的组织培养与快繁体系的建立

本实验以风车草（Graptopetalum paraguayense）的叶片为材料,研究其快繁成功．结果表明：正面叶片接种于琼脂或者MS培养基上,其无菌苗培养出苗率最高;疏松愈伤组织和胚性愈伤组织诱导的最佳培养基分别为：MS＋6-BA0．5mg／L＋2,4-D0mg／L;MS＋6-BA0．5＋2,4-D2．0;疏松愈伤芽诱导以及生根分别以：MS＋6-BAO．5m∥L＋NAAO．5m∥L;MS＋IBA0．5mg／L＋NAA0．5mg／L最适．各培养基pH5．8,附加0．7％的琼脂,3％蔗糖．炼苗和移栽的适当方案为：蛭石：珍珠岩=3：1灭菌培养基质中保湿培养;蛭石：珍珠岩=5：1未经灭菌的培养基质中炼苗培养．     

枸杞组培快速繁殖技术研究

通过对“宁杞2号”离体组织培养试验,及对愈伤组织诱导和生根状况的研究,进而探索了组培快速繁殖技术,通过试验筛选出了适宜的愈伤组织诱导和生根的培养基。结果表明,最佳的愈伤组织诱导培养基为：1／2MS＋BA1mg／L＋NAA1mg／L;最适的生根培养基为：1／2MS＋NAA0．6mg／L＋IBA0．2mg／L。     

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