查询词典 NA

During the process of long-time adaptive evolution, wetland plants adopted a series of special strategies to acclimate to salt stress. The main strategies are: 1 life history adjustment, e. g., to adjust seed germination time, implement seed dormancy and viviparity, and change reproductive manner to escape from direct salt stress, 2 morphological adjustment, e. g., to adjust biomass allocation pattern, age stem, defoliate, and carnify vegetative organs to isolate the redundant Na(superscript +) to the inactive-metabolism shoots or exclude the Na(superscript +)from tissues; 3 anatomic adjustment, e. g., to sink stoma, develop aerenchyma, and thicken cuticle and phellogen to maintain normal photosynthesis and respiration; 4 physiological and biochemical adjustment, e. g., to exclude and excrete salt, compartmentalize ions, adjust osmosis, do selective absorption, regulate hormones, and induce antioxidative enzymes to maintain the osmotic equilibrium and eliminate the active oxygen in cell; and 5 molecular level adjustment, e. g., to start up many salt-induced genes to regulate the metabolic responses to salt stress.

在长期的适应进化过程中，湿地植物形成了多种适应盐胁迫的策略，主要有：1生活史方面，植物可通过种子萌发时间的调整、种子体眠、胎生、繁殖方式的改变等逃避盐度的直接伤害；2形态学方面，植物可通过生物量分配模式的调整、茎的老化、落叶及营养器官的肉质化等将多余的Na隔离到代谢不活跃的茎中或将其排出体外；3解剖学方面，植物可通过气孔下陷、发达的通气组织、增加细胞木栓层、角质层及栅栏组织的厚度等以维持植物正常的光合作用和呼吸作用；4生理生化方面，植物可通过离子区隔化、拒盐、泌盐、选择性吸收、渗透调节、激素调节及抗氧化物酶的诱导等来维持细胞内正常的渗透压，清除胞内活性氧分子；5分子水平方面，植物可通过多种与盐胁迫相关的基因来调控细胞内的多种代谢反应。

Ginkgo has stronger ability of control the uptake and transportation of Na+andCl- from root to shoot than that of ailanthus.

NaCl胁迫下银杏叶片和根细胞对Na+吸收明显大于Cl-，臭椿在NaCl胁迫下根和叶细胞对Cl-的吸收大于Na+。

Under 100mmol/L NaCl stress,ailanthuscompartmentalized Na+ in vacuole,while under 200mmol/L treatment,the Na+ content incytoplasm was higher than vacuole.the ailanthus cells took up large amount of Cl- and didnot concentrate Cl- in vacuole.

在根和叶细胞中Na+通过液泡膜的转移和细胞K+含量稳定性的维持能力的不同是银杏和臭椿耐盐性差异的重要原因。

We have constructed a bivalence expression vector with SsNHX1 and AVP1 and transformed them into Arabidopsis. The results showed that the transgenic Arabidopsis plants 101 and 127 grew much better than wild type plants in the medium containing 100 and 200 mmol/L NaCl, which further indicated the important roles of Na〓 compartmentalization in vacuoles on plant salt tolerance.

2构建了同时含有液泡膜Na〓/H〓 antiporter与H〓-PPase基因的双元植物表达载体并转入拟南芥，筛选到在100和200mMol/LNaCl胁迫环境下生长发育均明显好于野生型的转基因拟南芥植株101和127，进一步验证了液泡Na〓区隔化在植物耐盐方面的重要作用。

The present results suggest that (1) NA is not mainly concerned with spontaneous discharges of chemoreceptor sensitive to hypoxia, but does elicit an increase in spontaneous discharges, and (2) the increase of chemosensory unit discharges produced by hypoxia can be inhibited by yohimbine.

结果提示：(1)NA不是维持颈动脉体对缺氧敏感的化学感受纤维自发放电活动的主要因素，但给予NA能增加此类纤维自发放电的频率；(2)在低氧过程中，给予#alpha#_(2)受体拮抗剂育亨宾，可减弱这类纤维对缺氧反应的程度。

The organic cells that have potential excitation can change the penetrability of Na~+ if they receive stimulation from external ,then Action potential occurs.

对组织细胞进行刺激可以改变可兴奋细胞对Na~+或Ca~(2+通透性，从而产生动作电位，使其内部的Na~+、K~+离子通道发生变化引起内部环境的改变，最终改变细胞的状态。

In the case of NA samples, the parameter for scale exponential family is discussed using empi- rical Bayes methods. Moreover, we investigate the statistical analysis of life data in reliability tests. Firstly, based on the LINEX loss function, we obtain the empirical Bayesian estimator for parameter of the one-side truncated-type distribution families and the scale exponential family under NA samples, also discuss the estimators?

在非对称的LINEX损失函数下，我们首先给出了一类单边截断型分布族、刻度指数族参数的经验Bayes估计NA样本情形），并讨论了该估计的收敛性质，在某些条件下，证明了本文给出的经验Bayes估计是渐近最优的，且给出了收敛速度。

Reinterpreting songs from centuries-old songbooks, Luar Na Lubre has brought the musical traditions of Galicia, a Celtic region in northwestern Spain, to the international stage since 1986. The recipients of the Ideal award as Best Galician Folk Group awarded by the region's leading newspapers, El Ideal Gallego, the band continues to reinvent the music of their homeland.

LUAR NA LUBRE是一支来自西班牙加利西亚地区的拉科鲁尼亚民谣乐队，组建于1986年，通过重新演绎那些悠久歌谣，Luar Na Lubre将西班牙西北部凯尔特人区加利西亚省的音乐传统带到了国际舞台。

We isolated SsNHX1 from halophyte S. salsa and transformed into Arabidopsis. Gene engineering base on reduce Na〓 content in cytoplasm creates a new approach to plant salt tolerance.

甜土植物拟南芥胞内控制离子区隔化基因AtNHX1及Na〓外排的基因SOS1均已克隆，并且AtNHX1在拟南芥中的过量表达显著提高了转基因植株的耐盐性，开创了降低Na〓毒害的基因操作新途径。

Objective:To understand the neutrophil antigen gene polymorphism in the Hui nationality in North west China by typing of NA gene.

目的：通过NA基因分型，了解中国西北地区回族人群NA基因多态性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失