樱桃番茄的组织培养与离体快繁研究

以樱桃番茄（L.Esculutum v.Cerasiforme）的下胚轴、幼叶、茎尖及带芽茎段为外植体,在附加不同浓度BA和LAA的MS培养基上进行离体培养,结果表明：樱桃番茄“红宝石”品种的下胚轴、叶和茎尖的最佳芽诱导培养基分别为MS 2.0mg/L BA 0.5mg/LIAA;MS 2.0mg/L BA 0.2mg/LIAA;MS 1.0～2.0mg/L BA 0.1～0.5mg/LIAA。芽最佳增殖培养基MS 1.0mg/L BA 0.5mg/LIAA,其增殖系数为3～4,用带侧芽的无菌短枝进行离体扦插,可1次成苗,扦插培养基为MS 0.005～0.010mg/LNAA或不加激素,其增殖系数可达5。     

Cu 2+ / 对离体培养下黄瓜子叶花芽分化的影响

以黄瓜子叶离体培养为实验系统,研究了Ｃｕ＾２＋对离体子叶外植体花芽分化的影响,育苗期的培养基中缺乏Ｃｕ＾２＋显著地降低离子叶外植体花芽,营养芽间接花的分化率;离体子叶外植体培养在含有不同浓度的ＣｕＳＯ４培养基中,外植体花芽和营养芽的分化率随Ｃｕ＾２＋浓度升高,其中以０．４μｍｏｌ／Ｌ为最佳;离体子叶外植体在培养的不同时期给予Ｃｕ＾２＋脉冲处理２４ｈ,发现第５天给予０．４μｍｏｌ／Ｌ脉冲处理显著地促     

哈密瓜花粉离体萌发特性的研究

通过哈密瓜花粉在固体培养基上进行离体培养，对哈密瓜品种金皇后的离体萌发特性进行研究。结果表明，培养基中硼酸的不同浓度对哈密瓜花粉离体萌发具有明显的影响，适宜的硼酸浓度为20mg／L；在不同的温度条件下，哈密瓜花粉的萌发率不同，25℃时哈密瓜花粉的萌发率达到了最大值，花粉萌发的适宜温度范围为10．35℃，随着温度的升高，花粉管的长度也相应的增加；另外，不同的贮藏时间和贮藏温度对哈密瓜花粉的萌发率也有一定的影响，一般在低温条件下贮藏花粉，可以较长时间保持花粉较高的萌发率。     

番茄离体培养的形态发生

对番茄下胚轴、子叶、叶柄不同类型外植体离体培养中有关细胞启动、分裂、分化以及器官发生作了细胞组织学观察,结果表明：番茄不同类型外植体在不同样的培养条件下,愈伤组织生长表现明显差异：下胚轴、子叶诱导产生愈伤组织时,细胞启动早,生长快,分裂方式基本为无丝分裂;下胚轴诱导愈伤组织形成时,细胞不规划的无丝分裂少于子叶,故下胚轴离体培养得到正常芽的比例高于子叶;番茄离体培养中不定芽通常发生在愈伤组织的周边区,也可起源于维管组织结节周围,形成层状细胞。不定根则由茎中柱鞘处发生。     

大白菜籽苗的苗龄及生长条件对子叶离体培养不定芽再生的影响

以大白菜自交系ＡＢ－８１为试材,对籽苗的苗龄以及生长条件如光照,播种基本培养基及蔗糖浓度等外界因子对子叶离体培养不定芽再生的影响进行了研究。３￣４ｄ苗龄和子叶不定芽再生能力最强;０￣２％的蔗糖浓度优于４％￣６％的蔗糖浓度,播种的基本培养基为１／４ＭＳ对子叶的不定芽再生最为有利,籽苗在２０００ｌｘ左右的日光下比在２９００ｌｘ或１２００ｌｘ荧光下培养更利于子叶的不定芽再生。     

麻竹茎尖培养及离体快繁研究

用麻竹嫩枝休眠芽的茎尖离体培养形成试管苗,转接于MS培养基并附加不同浓度的激素,诱导形成丛生芽,再继代培养后,丛生芽能不断地增殖,实现离体快速繁殖麻竹.对试管苗的生根和移栽技术也作了系统的研究,繁殖的试管苗成苗已应用于生产.     

萘乙酸和6苄基腺嘌呤对甘薯离体器官发生的影响

以重庆市主载和自育的甘薯优良品种为试材,比较了植物生长调节物质萘乙酸（NAA）和6－苄基嘌呤（BA）对甘薯离体器官发生的影响,试验结果表明：（１）NAA能明显促进不定根和不定芽的分化,当培养中添加1．0mg/LNAA时效果最好,3种外植体不定根、不定芽的分化频率以及根的分化量都达最大值,其中茎段分别为96．2％,65．4％,4．1,（2）BA对苷薯外植体的离体器官发生有一定的影响,高浓度的BA明显抑制外植体不定根和不定芽的分化。（3）茎段为诱导不定根和不定芽的最适外植体。     

甜叶菊叶片离体培养及试管无性系的建立

研究了离体条件下甜叶菊（Stiuia rebaudiana Bertoni)叶片愈伤组织诱导和植株再生技术,离体培养以MS为基本培养基并附加300mg/L水解酪蛋白,离体叶片在BA 0．5mg/L和NAA 0．5mg/L的培养基上诱导形成愈伤组织,在BA 0．5mg/L和NAA0．05mg/L的培养基上可诱导愈伤组织分化不定芽,分化频率为100％,不定芽在White基本培养基并附 加NAA0．01mg/L的培养基上诱导生根,生根率可达100％,炼苗后移栽,成活率达95％以上。     

健胃消食片溶液对家兔离体小肠平滑肌活动的影响

探讨不同浓度的健胃消食片溶液对家兔离体小肠平滑肌收缩活动的影响。以家兔为实验对象,制备不同浓度健胃消食片溶液作用于家兔离体小肠平滑肌,通过BL-420S生物机能实验系统分别描记在给不同浓度健胃消食片溶液前后的收缩曲线,观察其对离体小肠平滑肌收缩活动的影响。实验结果是滴加健胃消食片溶液浓度分别为0.08、0.16和0.32 g.ml-1,给药后可明显增大离体小肠平滑肌的收缩幅度(P<0.05),且具有剂量依赖性;而对收缩频率影响不明显(P>0.05)。结论是不同浓度健胃消食片溶液能够增大家兔离体小肠平滑肌的收缩幅度,浓度不同,收缩的幅度变化也不一致。     

月季茎尖离体培养的研究

试验以MS为基本培养基附加不同种类、不同浓度的植物激素,其对月季离体芽萌发、芽的生长增殖及诱导生根和移栽成活率进行研究.结果表明:以BA与NAA配合使用诱导离体芽的萌发效果优于单纯使用BA.继代间隔时间对增殖系数和幼苗生长有一定影响,以30 d继代一次为宜.7种继代增殖的培养基的处理中,MS BA2.0 mg/l NAA0.1 mg/l为最佳继代增殖培养基;生根培养基中,5种处理的生根结果均在90%以上,最佳生根培养基为1/2Ms NAA1.0 mg/l;温室过渡移栽时,以草炭土∶田园土=2∶1为基质,移栽成活率以1/2MS NAA1.0 mg/l为最高,达87%.     

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.     

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.     

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.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.