苦丁茶的组织培养和快速繁殖研究

用苦丁茶当年生枝条的顶芽和侧芽作外植体，培养在附加了各种浓度ＢＡ的ＭＳ培养基上，当ＢＡ浓度为３．０ｍｇ／Ｌ时诱导芽形成及增殖效果最佳，ＧＡ２．０＋ＮＡＡ０．２ｍｇ／Ｌ和ＢＡ配合使用有利于壮苗；在１／２ＭＳ培养基中，附加ＮＡＡ０．５ｍｇ／Ｌ，生根效果最佳。试管苗高２￣３ｃｍ、根数２￣３条时开盖炼苗２ｄ￣３ｄ移入培养土中，试管苗移栽成活率高。     

苦丁茶的组织培养和快速繁殖研究

用苦丁茶当年生枝条的顶芽和侧芽作外植体，培养在附加了各种浓度ＢＡ的ＭＳ培养基上，当ＢＡ浓度为３．０ｍｇ／Ｌ时诱导芽形成及增殖效果最佳，ＧＡ２．０＋ＮＡＡ０．２ｍｇ／Ｌ和ＢＡ配合使用有利于壮苗；在１／２ＭＳ培养基中，附加ＮＡＡ０．５ｍｇ／Ｌ，生根效果最佳。试管苗高２ｃｍ～３ｃｍ、根数２～３条时开盖炼苗２ｄ～３ｄ移入培养土中，试管苗移栽成活率高。     

马铃薯遗传转化系统的优化及禽流感病毒(H5N1)基因的导入

通过对以马铃薯（Ｓｏｌａｎｕｍ ｔｕｂｅｒｏｕｓｍ Ｌ．）块茎为受体的农杆力菌转化系统进行优化,筛选出使三个品种（鲁引１号、克新３号、优金）的受体均可得高频分化的培养基：ＭＳ＋２．０ｍｇ／Ｌ ＢＡ＋３。０ｍｇ／Ｌ ＺＴ＋０．５ｍｇ／Ｌ ＮＡＡ＋０．５ｍｇ／Ｌ ＧＡ。对几种农杆菌转化条件的比较研究发现,菌体用Ｍｓ＋０．５ｍｇ／Ｌ ＧＡ流体重悬并稀释４倍屿受体于２８℃,１００ｒ／ｍｉｎ振荡侵染２０～３     

苦丁茶的组织培养和快速繁殖研究

用苦丁茶当年生枝条的顶芽和侧芽作外植体，培养在附加了各种浓度ＢＡ的ＭＳ培养基上，当ＢＡ浓度为３．０ｍｇ／Ｌ时诱导芽形成及增殖效果最佳，ＧＡ２．０＋ＮＡＡ０．２ｍｇ／Ｌ和ＢＡ配合使用有利于壮苗；在１／２ＭＳ培养基中，附加ＮＡＡ０．５ｍｇ／Ｌ，生根效果最佳。试管苗高２ｃｍ～３ｃｍ、根数２～３条时开盖炼苗２ｄ～３ｄ移入培养土中，试管苗移栽成活率高。     

银杏愈伤组织的诱导与激素优化组合研究

通过实验,筛选出银杏愈组织的最佳培养基为Ｎ６＋ＮＡＡ３．０ｍｇ／Ｌ＋ＢＡ１．０ｍｇ／Ｌ,其次为ＭＳ＋ＮＡＡ３．０ｍｇ／Ｌ＋ＢＡ１．０ｍｇ／Ｌ,分别对ＮＡＡ、２,４－Ｄ、ＧＡ、ＢＡ和ＫＴ等在培养过程中的作用与浓度进行了探索,结果表明ＮＡＡ、ＢＡ结合使用,既适合诱导又利于继代培养,２,４－Ｄ适合诱导,ＧＡ不利于诱导,ＫＴ有利于分化。     

谷胱甘肽合成酶在大肠杆菌中的高效表达及性质

在成功构建了谷脱甘肽（ＧＳＨ）合成酶基因表达质料（ｐＴｒｃ－ｇｓｈ）的基础上,对不同大肠杆蓖突主菌进行了比较,筛选出高效、稳定表达ＧＳＨ合成酶的工程菌并进行了最佳酶表达条件的研究。结果表明：重组工程菌Ｅ．ｃｏｌｉＢＬ２１（ｐＴｒｃ－ｇｓｈ）表达量最高,质粒稳定性好;以５％接各量于３７℃、ｐＨ７．２培养至ＯＤ５５０＝０．５左右,加入诱导剂ＩＰＴＧ（０．ｍｍｏｌ／Ｌ）,同时切换培养条件为３４℃、ｐＨ６     

纤维素酶曲的浅盘生产研究

本试验以里氏木霉Ｔｒ－Ｈ为出发菌株,对其浅盘培养条件及酶活测定方法进行优化,结果,当接种量为０．３％,初始ＰＨ值２．０,料层厚度２．５ｃｍ时,２８℃培养１６０小时,５０℃浸提,酶活从原来的２８０ｍｇＧ／ｇ．ｈ提高到６００ｍＧ／ｇ．ｈ;扣盘使酶活下降。     

酸奶发酵剂高浓度培养的研究

对传统酸奶菌保加利亚乳杆菌和嗜热链球菌进行了高浓度混合培养的研究。综合利用中和法、补料培养法及好气培养法等,确定了Ｌ．ｂ和Ｓ．ｔ的最佳培养工艺条件。其最佳培养基配比为：脱脂奶粉１０％、乳清粉１％、酵母膏１％、磷酸氢二铵０．２５％;培养过程控制ｐＨ值为５．８～６．３,摇床培养（（８５～１００）ｒ／ｍｉｎ）４ｈ后,补加２％乳糖;继续培养至５．５ｈ后结束,菌数达到２５．７５亿个／ｍＬ     

人生长激素诱导体外培养的大肠癌细胞株细胞周期动？…

研究人生长激素（ｈＧＨ）对大肠癌细胞增殖和分化的影响，收集人大肠癌细胞株Ｌｏｖｏ和ＬＳ－１７４－Ｔ（简称１７４），以顺铂和／或不同浓度的ｈＧＨ体外培养细胞，２４ｈ后以流式细胞仪测定细胞增殖周期等指标。结果显示ｈＧＨ能诱导１７４细胞Ｓ期数率非常显著地增高（Ｐ〈０．０１）；Ｌｏｖｏ细胞１００ｎｇ／ｍＬ组Ｇ０－Ｇ１期参数下降（Ｐ〈０．０５），Ｓ期参数增加（Ｐ〈０．０１），２００ｎｇ／ｍＬ组Ｇ２－Ｍ期百分     

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     

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