球茎甘蓝花托花柄组织培养及其植株再生

球茎甘蓝花托、花柄在ＭＳ＋２,４－Ｄ０．５ｍｇ／Ｌ＋６－ＢＡ１ｍｇ／Ｌ培养基上培养,诱导形成愈伤组织．愈伤组织在ＭＳ＋ＮＡＡ０．５ｍｇ／Ｌ＋６－ＢＡ３ｍｇ／Ｌ的分化培养基上培养,能分化出芽．花托在附加６－ＢＡ和ＧＡ３的ＭＳ培养基上培养,能直接出芽．花柄在附加６－ＢＡ或６－ＢＡ和ＧＡ３的ＭＳ培养基上培养,能直接出芽．芽通过继代培养,能再生植株     

播娘蒿子叶及下胚轴诱导再生植珠的研究

用播娘蒿种子，在附加６－ＢＡ０．５～１．０ｍｇ／Ｌ＋ＮＡＡ０．１ｍｇ／Ｌ的ＭＳ培养基上获得无菌苗，幼苗的下胚轴在含６－ＢＡ０．１ｍｇ／Ｌ＋ＮＡＡ０．５ｍｇ／Ｌ的ＭＳ培养基上出愈情况最佳，将来自下胚轴的愈伤组织培养于含有６－ＢＡ２．０ｍｇ／Ｌ＋ＮＡＡ０．２ｍｇ／Ｌ的ＭＳ培养基上分化出的丛生芽状态最好，最佳生根培养基为１／２ＭＳ＋ＩＢＡ０．５ｍｇ／Ｌ＋ＮＡＡ０．０５ｍｇ／Ｌ．     

播娘蒿子叶及下胚轴诱导再生植株的研究

用揪娘嵩种子,在附加６－ＢＡ０．５～１．０ｍｇ／Ｌ＋ＮＡＡ０．１ｍｇ／Ｌ的ＭＳ培养基上获得无菌苗,幼苗的下胚轴在含６－ＢＡ０．１ｍｇ／Ｌ＋ＮＡＡ０．５ｍｇ／Ｌ的ＭＳ培养基上的出愈情况最佳,将来自下胚轴的愈伤组织培养了含有６－ＢＡ２．０ｍｇ／Ｌ＋ＮＡＡ０．２ｍｇ／Ｌ的ＭＳ培养基上分化出的丛生芽状态最好,最佳生根培养基为１／２ＭＳ＋ＩＢＡ０．５ｍｇ／Ｌ＋ＮＡＡ０．０５ｍｇ／Ｌ。     

生长调节剂对香石竹茎尖诱导形成芽的影响

将香石竹的茎尖作为外植体，分别接种于添加不同量细胞分裂素（６－ＢＡ或ＫＴ）及生长素（ＮＡＡ）的ＭＳ琼脂培养基上，结果表明，培养基中如果只添加６－ＢＡ或ＫＴ，当两者浓度分别在（０．０１－０．５）ｍｇ／Ｌ和（０．０１－１）ｍｇ／Ｌ时，对芽的产生起促进作用；在大于０．５ｍｇ／Ｌ和１ｍｇ／Ｌ时，则抑制芽的产生，培养基中同时加入ＮＡＡ和６－ＢＡ或ＫＴ，在ＮＡＡＲ 最小于６－ＢＡ或ＮＡＡ和ＫＴ时，利于芽的形成     

植物生长调节物质对华黄芪愈伤组织诱导、增殖及芽分化的效应

以华黄芪叶片为外植体,在附加不同浓度和比例的２,４－Ｄ与６－ＢＡ的ＭＳ培养基上,探讨植物生长调节物质对华黄芪愈伤组织诱导、增殖及芽分化的效应,并在愈伤组织增殖过程中,初步对愈伤指数与愈伤组织生长量的关系进行了比较,结果表明：在ＭＳ＋２,４－Ｄ０．５ｍｇ／Ｌ＋６－ＢＡ０．３ｍｇ／Ｌ培养基上诱导率最高,且形成愈伤组织时间最短;在ＭＳ＋２,４－Ｄ０ｍｇ／Ｌ＋６－ＢＡ０．３ｍｇ／Ｌ培养基上,芽的分化率最高;愈伤指数与“称重法”测定愈伤组织生长所得结果一致．     

荔蒲芋的组织培养

以荔蒲芋球茎上的萌芽或芽鳞片为外植体，在含有６－ＢＡ和ＮＡＡ的ＭＳ培养基上较易诱导出丛生芽和愈伤组织，丛生芽在液体培养基中继代培养可产生大量无根小苗，激素配比对繁殖系数影响较大，以６－ＢＡ２．０ｍｇ／Ｌ和ＮＡＡ０．６ｍｇ／Ｌ的配比最适合继代增殖，无根小苗在含有ＮＡＡ１．０ｍｇ／Ｌ的１／２ＭＳ培养基中诱导１５ｄ即呆生根形成再生植株。     

辣椒（Capsicum annuum L.）下胚轴离体培养的研究

将辣椒无菌苗下胚轴切段接种在ＭＳ培养基（附加不同的植物激素）上，诱导产生愈伤组织。最适的诱导培养基为ＭＳ＋２ｍｇ／Ｌ ＢＡ，０．５ｍｇ／Ｌ ＩＡＡ，在此培养基上产生的愈伤组织具有较强的分化能力。将愈伤组织转移到分化培养基，光照培养，芽分化率可达２５．０％。不定芽在含１ｍｇ／Ｌ ＧＡ３和２ｍｇ／Ｌ ＢＡ的ＭＳ培养基上伸长成苗，再移入生根培养基上诱导生根，长成完整植株。     

斑叶竹节海棠的离体快速繁殖研究

本文报道了斑叶竹节海棠的离体快速繁殖实验及结果。以斑叶竹节海棠的叶片为外植体，在含有不同浓度配比的６－ＢＡ和ＮＡＡ的ＭＳ培养基上诱导生芽，其中以０．４ｍｇ／Ｌ６－ＢＡ和０．２ｍｇ／Ｌ ＮＡＡ的配比为最佳，生芽率达９４％。以此培养基为增殖培养基成苗。当苗长至３￣４ｃｍ时，切下苗在１／２ＭＳ或１／２ＭＳ＋０．１ｍｇ／Ｌ ＩＡＡ的培养基上生根，获得了再生植株并移载成活，成活率达９０％。在增殖和生根过程中     

甜瓜种苗克隆

以古拉巴、蜜翠、伊丽莎白,西莫洛托４个引进杂交种甜瓜和七宝甜瓜,小麦瓜,青皮绿肉、亭林雪瓜本地品种为材料,用其子叶为外植体进行培养,获得无性繁殖系,结果表明,杂交种的芽诱导率高于本地品种;在１４种激素配比组合中ＭＳ＋６－ＢＡ０．５ｍｇ／Ｌ＋ＩＡＡ０．０５ｍｇ／Ｌ培养基丛生芽诱导率最高,达７２％－７６％;ＭＳ＋６－ＢＡ０．２ｍｇ／Ｌ＋ＩＡＡ０．０５ｍｇ／Ｌ培养基最利于芽伸长;生根培养基为ＭＳ＋ＩＡＡ０．２ｍｇ／Ｌ＋ｎａａ０．５ｍｇ／Ｌ,平均每粒种子可获得的８棵再生植株。     

高蛋白籼稻品系H28胚培养力的初步研究

以籼稻Ｈ２８优良品系为材料，通过胚培养诱发愈伤组织并继代培养，最适的诱导培养基为ＭＳ＋２ｍｇ／Ｌ ２，４－Ｄ，在此培养基上产生的愈伤组织具有较强的分化能力，将愈伤组织转移到分化培养基，光照培养１７ｄ后，在ＭＳ＋０．２５ｍｇ／Ｌ ＮＡＡ＋１ｍｇ／Ｌ ＢＡ的分化培养基上，愈伤组织的芽分化率可达４０％。在分化培养基上培养１０ｄ后，将愈伤组织转移到无激素或低浓度激素的培养基上，其分化出苗率有明显的提高。     

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