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From the tests,we have obtained some structural variant features related with salt resistance and demonstrated the successful introduction of Rhizophora apicularta DNA into tomato.This thesis contains two parts. In the first part,the morphological and anatomical structures of the leaves were investigated. As to the morphology,some difference between control and transformed tomato were found. The leaf dimensions of the transformed tomato with unextended leaves were smaller than that of control. These structure changes should help to decrease the evaporation of water effectively and release the physiological drought resulted from saline.

本实验分两部分:第一部分、对转化番茄的形态及细胞显微结构进行观察与分析,实验表明转化番茄形态与对照相比有明显的变化,其叶面积变小,叶形收拢,这种结构可有效地减少水分的蒸发,缓解由盐胁产生的生理干旱;组织解剖结构结果显示,耐盐番茄在细胞结构上发生了明显的变异:其气孔器倾向下陷,表皮毛增多,叶脉微管组织不发达,微管束周围出现增多的贮水细胞,叶缘及其它部位表面分化出大型的多细胞分泌型结构,这些结构与转化番茄后代较强的耐盐能力有关。

New ruthenium benzylidene complexes benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] [k~2-diphenylphosphinoacetato] monochlororuthenium (46), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene][k~2-3-propionato]monochlororuthenium (47), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] [k~2-2-benzonato]monochlororuthenium (48) featured five-membered, flexible six-membered and rigidsix-membered chelating rings respectively are prepared by reactions of complex 41 withcorresponding sodium phosphino-carboxylates. It is confirmed by X-ray crystallographicanalysis that the coordination geometries of complexes 46 and 47 are distorted squarepyramids with phosphino-carboxylate ligands chelating to ruthenium, and the coordinationbetween ruthenium and benzylidene ligands are strengthened.

用二苯基瞵乙酸盐、二苯基膦丙酸盐、二苯基膦苯甲酸盐与钌卡宾配合物41反应合成了三个新的钌卡宾配合物:含五元膦-氧螯合环的1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基1-苯亚甲基--一氯合钌(46)、含六元柔性膦-氧螯合环的[1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基1-苯亚甲基--一氯合钌(47)及含六元刚性膦-氧螯合环的[1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基]-苯亚甲基--一氯合钌(48)。X射线单晶衍射分析证明,配合物46、47都为变形的四方锥构型,膦-氧与钌形成螯合配位,其中苯亚甲基与钌的配位得以加强。

The salty gland of Messerschmidia sibirica is developed from epidermic cell of stem and leaf.

利用石蜡切片法研究了砂引草茎叶的解剖结构,尤其是对泌盐腺的位置、泌盐腺的形态结构及泌盐腺的发生发育过程进行了系统的研究,结果表明:砂引草茎的初生结构维管束是外韧的,且其有10-12束,大小不等,髓和髓射线发达;叶的上下表皮细胞各一层,栅栏组织与海绵组织分化明显。

In the CO_2 source area, phytoplankton abundance was low and zooplankton mainly belonged to true estuary and estuary marine communities; while in the CO_2 sink area, phytoplankton was high and zooplankton mainly belonged to euryhaline marine communities.

在枯水季节,长江口海域由低盐区大气二氧化碳的强源逐渐过渡到高盐区的弱汇,咸淡水的混合在一定程度上决定了该区域碳源汇的格局;二氧化碳源区,浮游植物的丰度低,浮游动物主要是纯河口类群和河口性海洋类群,而汇区,浮游植物的丰度高,浮游动物主要是广盐性海洋类群。

Result Wild castor preformed better in halophilism than that of cultivar castor Zibi 6 under the NaCl treatment. One of the salt tolerant mechanisms of castor is to improve K(superscript +) uptake and transport to overground portion, thus to maintain K(superscript +)/Na(superscript +) homeostasis in leaves; on the other hand, the high stability of Photoreaction System Ⅱ plays a key role in maintaining the leaf photosynthetic rate under salt stress.

结果]野生蓖麻较栽培蓖麻具更明显的喜盐特性;蓖麻的耐盐机制在于促进K的吸收和向地上部的运输,进而维持叶片的K/Na平衡;通过维持光系统Ⅱ的稳定性进而维持盐胁迫下叶片的光合速率。

To explore new synthetic methods, we set out a careful investigation of the reaction of benzimidazolium salt with many nucleophilic agents, including the active aromatic compounds and heteratom nucleophilic agents, and found that the quaternary C=N is not so active; when benzimidazolium salt is reacted with big nitrogen nucleophilic agent? phthalimide, it does not give the expected addition product, instead, produces N-alkyl phthalimide through alkyl-transfermation from benzimidazolium salt to phthalimide.

为了开发新的合成方法,研究了苯并咪唑盐与各种亲核试剂(活泼芳环与杂原子亲核试剂)的反应,发现苯并咪唑盐不与活泼芳环及杂原子亲核试剂发生2位加成反应;在与体积较大的位阻型N亲核试剂邻苯二甲酚亚胺反应时,未得到亲核试剂与极化的C=N的加成产物,而是得到N烷基化的邻苯二甲酰亚胺,进一步研究表明,苯并咪唑盐将1(3)位N上的烷基转移给了邻苯二甲酰亚胺,并讨论了其反应机理和取代基,溶剂效应。

The linear relationship between boiling temperature and salt concentration was verified by the experimental results and thermodynamical theory.

实验结果和热力学基本原理确证了体系的沸点与加入盐浓度间的线性关系,计算了各双液组成下体系的盐效应常数,分析了实验中产生&异常&现象的原因,探讨了溶液内部粒子相互作用的规律,通过用相律、盐效应理论、静电理论、溶剂化理论的解释,得到了一些具有理论价值的结论。

The results showed that the adhesion between rubber and steel cord increased under unaged,hot air aging or brine aging conditions as the level of cobalt ...

结果表明,随着钴盐用量的增大,在未老化、热空气老化及盐水老化条件下,胶料与钢丝的粘合强度有所提高;在湿热老化条件下,粘合强度由于热量和湿气的交互作用而发生较大幅度的下降,但钴盐用量在10份时粘合强度的下降为最小。综合胶料初始和老化后的应力应变性能和粘合强度,以10份钴盐用量为最佳。

In order to examine the influence of higher ionic strength on the interaction between QDs and avidin, the fluorescence spectra of free CdTe and CdTe-avidin solution are recorded as a function of increasing NaCl concentration.

实验还考察了盐浓度对QDs-亲和素体系的影响情况,结果发现随着盐浓度的增大,QDs-亲和素体系的荧光峰位逐渐蓝移,而单独量子点的荧光峰位基本不变,这说明盐浓度的增加削弱了CdTe量子点与亲和素分子之间的结合作用。

In the National Natural Science Fund Project, supported by the Institute through 10 years in a row on the lake dried up Ebinur region of proliferation and the accumulation of observations and sampling analysis found that,Lop Nur, the Ebinur Lake, Xinjiang艾丁湖region is the main source of salt dust, from the bottom of the lake dried up Ebinur region of dust is an important source of salt dust material, Salt in the region of the frequency of dust storms has created extremely favorable conditions.

据中科院新疆生态与地理研究所吉力力阿不都外力研究员介绍,在国家自然科学基金项目支持下,该所通过连续10年对艾比湖地区干涸湖底的扩散和堆积进行观测和取样分析发现,罗布泊、艾比湖、艾丁湖地区是新疆盐尘暴的主要策源地,源自艾比湖地区干涸湖底的粉尘是重要的盐尘暴物质来源,为该地区盐尘暴的频发创造了极为有利的条件。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。