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皮层的组织
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  culturing tissue
     Results Succeeded in culturing tissue engineering skin with dermis and epidermis.
     结果:成功构建了具有表皮层和真皮层的组织工程皮肤。
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  相似匹配句对
     Organization
     组织
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     Experimental study on reconstruction of corneal epithelium in vitro using tissue engineering technique
     组织工程技术体外重建角膜上皮层的实验研究
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     Organising Committee
     组织委员会
     Results Succeeded in culturing tissue engineering skin with dermis and epidermis.
     结果:成功构建了具有表皮层和真皮层的组织工程皮肤。
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  culturing tissue
For this purpose, in vivo S-phase cells were labelled with [3H]thymidine (Tdr) and ex vivo labelling was continued by culturing tissue specimens in bromodeoxyuridine (BrdU).
      


Two citrus mycorrhizal fungi, found in China, were named C C-l and C C-2 for the present. According to microscopical anatomy observation and pot inoculation experiments, both of them belong to Phytomycetus endophytic fungi and are of highly distinctive vesicular-arbuscular type mycorrhizal in associa-tion with citrus. C C-l possesses the characteristics of producing plenty of ve-sicles more than C C-2 and forming arbuscles in the parenchyma cells of root cortex. Hyphae of C C-l extend into rhizosphere soil to...

Two citrus mycorrhizal fungi, found in China, were named C C-l and C C-2 for the present. According to microscopical anatomy observation and pot inoculation experiments, both of them belong to Phytomycetus endophytic fungi and are of highly distinctive vesicular-arbuscular type mycorrhizal in associa-tion with citrus. C C-l possesses the characteristics of producing plenty of ve-sicles more than C C-2 and forming arbuscles in the parenchyma cells of root cortex. Hyphae of C C-l extend into rhizosphere soil to enlarge the absorptive area of roots and hyphae tip forms knotty microverru.

在我国发现了两种柑桔菌根真菌,暂编号为中柑1号和中柑2号。通过显微解剖观察和盆栽接种试验证明二者均属于藻菌类内囊霉属的“泡囊-丛状(V-A)型内生菌根真菌。中柑1号在锦橙根的皮层组织内产生丰富的泡囊和丛状体,菌丝伸出根外形成瘤状吸盘结构。 取七个柑桔品种的实生苗,在盆栽灭菌土的条件下,分别人工接种这种菌根真菌,均使柑桔的根系感染而形成菌根。但不同柑桔品种的菌根感染程度不同,以锦橙对中柑1号和粗柠檬对中柑2号的感染率为最高,枳对两种菌根真菌的感染程度极低,甚至不感染。 菌根显著地促进柑桔植株的生长,但同一种菌根菌对不同的柑桔品种的生长反应不一致。中柑1号使锦橙实生苗的枝茎和根的长度为对照的2倍以上;中柑2号使粗柠檬的长度为对照的2.8倍。以菌根的依赖和根穗比值也说明了菌根对柑桔生长的反应。

The brown alga Laminaria japonica is an important seaweed widely cultivated in this country. The inheritance of its frond length and width has been studied. This paper discusses only the inheritance of the frond thickness.According to our observation the development of the frond thickness was influenced by many environmental and genetic factors.Evidences collected showed that the frond thickness was a genetic character. Firstly, the frond thickness showed a positive correlation of r=0.820 between the parent...

The brown alga Laminaria japonica is an important seaweed widely cultivated in this country. The inheritance of its frond length and width has been studied. This paper discusses only the inheritance of the frond thickness.According to our observation the development of the frond thickness was influenced by many environmental and genetic factors.Evidences collected showed that the frond thickness was a genetic character. Firstly, the frond thickness showed a positive correlation of r=0.820 between the parent and the offspring in our experiment. Secondly, the frond thickness of breed II3 was observed to be significantly greater than that of breed H4 for four successive years.The frond thickness was found to be a quantitative character, showing a continuous variation. Multi-factors were believed to control the growth of the frond thickness.The genetic factors were suspected to act on the cell-size and the number of cellular layers in the cortex of the frond. The thick-frond breed H3 possessed six cell layers more than the thin-frond breed H4. Observations on the early growth of the germlings showed that the genetic factors seemed to begin to act in the young spc-rophytes about 2-4 mm long.As the natural population of this seaweed was found to be very heterozygous in genetic content, various inbred lines or breeds with different frond thickness could be obtained by intensive inbreeding and vigorous selection.

本文报道连续四年观察几个海带自交系叶片厚度的生长情况,得到了以下结果:(1)亲本海带叶片的厚度与子代的叶片平均厚度之间有着十分显著的正相关;不同自交系海带累代保持各自叶片平均厚度的特征,即厚叶品系(H_3)的叶片总是最厚的,薄叶品系(H_4)的叶片总是最薄的。这表明海带叶片厚度是一个遗传性状。(2)海带叶片厚度是一个典型的数量性状,呈连续变异。它的遗传方式可能是属于典型的数量遗传,受微效多基因的控制。(3)海带叶片厚度的遗传因子主要是作用于叶片的皮层组织,它控制皮层组织细胞的层数和皮层细胞的大小。

In the present paper the synaptosomes in the cerebral cortex of mice of different ages were prepared by means of ultracentrifugation in discontinuous sucrose density gradients, and the content of amino acids in synaptosomes was determined by an ultramicromethod using the dansyl reaction, followed by chromatography on polyamide thin layers and fluorenscence measurements.

用DANS反应-薄膜层析-萤光方法测定了蔗糖密度梯度超离心制备的不同年龄小鼠大脑皮层突触小体中递质氨基酸的含量。实验结果表明:(1)不同年龄小鼠每克皮层组织中突触小体蛋白质含量不同。新生——5.68、成年——21.37、老年——19.14毫克/克脑组织湿重。(2)递质氨基酸含量以毫微克分子/克脑组织湿重表示时,GABA含量在发育期升高,到老年期又降低;牛磺酸含量由新生到老年期持续下降;谷氨酸、天冬氨酸含量在发育期升高,到老年期无明显变化。(3)突触小体中“抑制性”递质氨基酸总量与“兴奋性”递质氨基酸总量的比值(GABA+Tau+Gly/Glu+Asp)随年龄增长而明显降低,成年的比值趋近于1。新——3.39、成年——1.06、老年——0.79。(4)老年小鼠皮层突触小体的蔗糖梯度区带明显分成两层。即除P_2B层外,出现明显的P_2B′层,其GABA、谷氨酸、天冬氨酸含量与P_2B层相比,分别降低24.2%(P<0.05)、50.4%(P<0.001)和44%(P<0.001)。

 
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