查询词典 trophic level

When tested by artificial ecological encloser, all tested aquatic plants grew well andimproved water quality and transformed the trophic state of the reservoir, and so did theircommunities combined with several aquatic plants such as E.

这些结果说明ACU具有明显的缓解铜胁迫对菹草的毒害作用，并且在一定程度上可促进菹草的生长发育。

The splicing mutation of COL7A1 gene is the underlyi ng cause of and specific rather than common polymorphism for the family with dys trophic epidermolysis bullosa pruriginosa subtype.

结论COL7A1基因剪接位点的突变是引起该家系临床症状的特异突变，而非多态性改变。

Generally, in grazer systems, that part of the trophic structure of a community which depends on the consumption of living plant biomass, secondary productivity is an order of magnitude less than primary production resulting in a pyramidal structure.

一般说来，在牧食者系统中，次级生产力是群落营养结构中，依存于消费活植物生物量的那一部分，在数量级少于植物生产力，从而形成了金字塔结构。

Four coastal fish species belonging to different trophic levels (one herbivore, one omnivore, and two carnivores) were analyzed.

四种沿岸鱼类属于不同的营养级（一种是草食性，一种是杂食动物，两种是食肉动物）都被分析。

This results in an increasing concentration of insecticide in organisms at the higher trophic levels.

这就导致在更高营养级上的有机体中，农药的浓度增加。

Recent eidence obtained in itro suggests that the type 2 Ang II receptor (AT2R) mediates the trophic action of Ang II on adipocyte differentiation and lipogenesis.

最近获得的体外试验研究表明2型血管紧张素Ⅱ受体介导血管紧张素Ⅱ引起的脂肪细胞分化的营养作用及脂肪生成。

The milkfish pond system is composed of limited trophic components and operated by simple food chains.

本研究之目的是为探讨台湾传统浅坪式虱目鱼塭生态系统的运作情形。

The table of contents include 15 parts, early events in neural development; neuronal differentiation; pattern and positional information; movement and migration of neurons; axon outgrowth and the generation of stereotyped nerve patterns; neuronal death during development; trophic effects of targets on neurons; long-term effects of neurons on their targets; formation of synapses; selective synaptic connections; the molecular basis of neuronal recognition; rearrangement of developing neuronal connections; maintenance and modifiability of synapses; the development of behavior; principles of neural development.

内容包括15部分，早期神经发育事件；神经细胞分化；模式与位置信息；神经元运动及迁移；轴突生长与固定的神经模式的形成；发育过程中的神经细胞死亡；对神经细胞靶向的营养效应；神经细胞对它们靶向的长期效应；突触形成；选择突触连结；神经细胞识别的分子基础；发育过程中神经细胞连结的重置；突触保持和改变；行为发育；神经发育原理。

Objective: To compare trophic effects of soluble substances derived from Schwann cells of neonatal and Wallerian degenerating segments of rats on facial motoneuron cultures.

目的：比较培养的面神经和坐骨神经来源施万细胞（Schwann cell， SC）的可溶性分泌物对面神经运动神经元（facial motoneuron， FMN）的营养活性作用。

In conclusion, Schwann cells from wallerian degenerating facial nerves of rats might bear with similar biological characteristics and functional phenotype to those from sciatic nerves in vitro, and they might be able to produce soluble NTFs for trophic support on facial motoneuron cultures. The establishment of methods for obtaining high-purity facial motoneuron cultures of rats with partially labeled fluorescence should be of significance in contribution to further investigation on facial motoneuron's response to NTFs and other affecting factors.

综上所述，本文通过面神经雪旺氏细胞体外培养条件下生物学特性、功能表型，及其对培养面神经运动神经元细胞的营养活性作用的研究，为在体外条件下研究雪旺氏细胞对面神经运动神经元的营养支持作用时，如何选择细胞来源，提供了实验依据；建立了获得较高纯度并带荧光标记的面神经运动神经元的分离和体外培养方法，为进一步研究影响面神经生长、损伤后再生修复的因素奠定了实验基础。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。