查询词典 NAA

A simple method for enantiomeric discrimination ofsecurinine using the chiral solvating agent--N-Phthalylalanine was established. Time course studies on

结果表明，光照、MS基本培养基、5％蔗糖浓度、16.11μM NAA和2.32μM KT的激素配比为愈伤组织生长和一叶萩碱积累的最适条件。

Sherds were collected from Hongzhou Kiln covering 8 periods from Eastern Han to Late Tang Dynasty/the Five Dynastied and their bodies were analysed by NAA. The results show that the elemental contents in different samples are quite distinct, even for those in the same period. It means no single element can be used as "fingerprint" to distinguish the period. The curves of the contents of Na, Rb, Ba and Fe varying with lime are very similar, like "U" shape.

对江西洪州窑从东汉晚期至晚唐五代8期400个瓷胎样品进行了中子活化分析，分析结果显示碱金属元素Na和Rb、碱土金属元素Ba及Fe等作为胎的助熔剂元素随年代的变化趋势相似，都呈现出两头高中间低的U字形变化规律，其中Fe作为呈色元素，其含量的高低与瓷胎颜色的深浅是一致的。

Sherds were collected from Hongzhou Kiln covering 8 periods from Eastern Han to Late Tang Dynasty/the Five Dynastied and their bodies were analysed by NAA. The results show that the elemental contents in different samples are quite distinct, even for those in the same period. It means no single element can be used as "fingerprint" to distinguish the period. The curves of the contents of Na, Rb, Ba and Fe varying with time are very similar, like "U" shape.

对江西洪州窑从东汉晚期至晚唐五代8期400个瓷胎样品进行了中子活化分析，分析结果显示碱金属元素Na和Rb、碱土金属元素Ba及Fe等作为胎的助熔剂元素随年代的变化趋势相似，都呈现出两头高中间低的U字形变化规律，其中Fe作为呈色元素，其含量的高低与瓷胎颜色的深浅是一致的。

In this paper,plumules,cotyledons,hypocotyls,leaf blades,petioles and stalks of physic nut (Jatropha curcas L.) were used as explants,and callus induction and plant regeneration were studied on MS medium contained different concentrations of 6-BA and NAA.

以小桐子的胚芽、子叶、下胚轴、叶柄、叶片和茎段作为外植体，用不同浓度的6-苄基腺嘌呤(6-BA)和α-萘乙酸对其进行愈伤组织的诱导和植株再生的研究。

Xu. On the MS medium with 6-BA and NAA , the leaves and petioles gave the high regeneration rate.

S 培养基上，叶柄和叶片外植体有高的成芽率，具有强的器官再生能力。

When cultured on the medium with different auxin , root segments could elongate and branch, and the addition of 1mg/l IBA into the medium was the most suitable for long-term root culture. Calli could be induced from root explants in the presence of 2, 4-D and when transferred onto E medium, they transformed further into embryonic calli which could develop into normal plants through the stages of globular-embryo, heart-shaped embryo, torpedo-shaped embryo, cotyledonary embryo.

培养基中添加生长激素（IAA，IBA，NAA）能够诱导无菌苗根切段的生长和分枝形成；而1mg／l IBA的存在，最适合于根的长期离体培养。2，4-D的存在能够诱导根外植体脱分化形成愈伤组织，愈伤组织转移至E型分化培养基能够转变成胚性愈伤组织，并进一步经球形胚、心形胚、鱼雷形胚、子叶形胚发育成正常植株。

Field experiments were conducted in three years (1999, 2000 and 2001) in Yunnan province to determine the effects of NAA application after removing the shoot apex on plant growth, K+ and nicotine concentrations in different organs of flue-cured tobacco.

在云南省田间连续三年研究了打顶后在茎断面涂抹萘乙酸处理对烤烟植株生长、钾素吸收、烟叶中钾和烟碱浓度的影响。

Result Explants sterilized in 0.1% mercuric chloride for 8 min had the best effect. The optimum medium for callus was MS+6-BA 1.0-1.5 mg/L+NSA 0.5-1.0 mg/L.

结果］用浓度0.1%升汞溶液灭菌8 min，外植体污染率为54.55%，死亡率为3.64%；最佳诱导培养基为MS+6-BA 1.0-1.5 mg/L+NAA 0.5~1.0 mg/L。

The completion of k0 compilation for 112 reactions of NAA interest has made it possible to determine 63 elements parametrically.

112个活化分析感兴趣的反应k_0值的建立，已经使得63种元素的参量法堆中子活化测定成为可能。

Nevski in vitro and selected several favorable media.Germ-free plants were produced with germination on MS medium. Callus was induced with B5+1.5 mg.L-1 2,4-D+0.5 mg.L-1 NAA,with leaf sheath and hypocotyls as explants.

Nevski种子消毒并在MS培养基上萌发获得无菌苗，以幼苗的叶鞘和胚轴为外植体诱导愈伤组织，经继代后进一步诱导不定芽及生根。

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