查询词典 Sn

High brain iron involved in the etiology of PD, while iron chelator desferrioxamine mesylate could protect DA neurons.

6.6-OHDA可导致Str的DA释放量及含量均减少，此过程有铁的参与，由于铁可导致DA神经元的死亡，SN内铁升高可使Str内DA释放量和含量均降低，因此铁含量的增加可能是DA含量减少的原因之一，铁离子螯合剂甲磺酸去铁胺具有保护DA神经元的作用。

The grain-size distribution shows that sand-dust fall-outs in Harbin are the coarsest ones reported ever since in China.

岩石中Sn，W，F，As，Sb，Pb，Zn，Cu，U等有高的综合异常和重砂有锡石，黑钨矿，锑矿物，辰砂及铅，锌，铜矿物异常。

Investigation on the effect of Sn/Pb - dopped Bi - 2212 superconductors has been canied out by the X - raydiffraction, together with simultaneous measurements of the spectra Of POsitron annihilation lifetime and positronDoppler broadening.

以X射线物相分析为主要实验手段，并结合正电子寿命谱和多普勒展宽谱和电阻测量，系统地研究了在不同的锡掺杂量下，Bi－2212超导相结构细节及电子态的变化。

At weak dopping level, Sn dopping results in a enhancement of cooperation between layers and increment of su-perconducting transition temperature.

导致了载流子浓度的提高和层间耦合的加强，有利于超导转变温度的提高。

No needle coke with a uniaxial flow texture was made from LH or SN feedstock under various carbonization conditions.

结果表明，在较宽条件下两种原料单独焦化均得不到取向度高的流线型结构。

The tribological properties of 500 SN oil containing nanometer copper borate were investigated with a four ball machine and a block on ring friction and wear tester.

结果表明：纳米硼酸铜使500SN基础油润滑下的摩擦系数略有增大，并使其抗磨及承载能力提高；其最佳添加量为0.70%～1.10%；纳米硼酸铜颗粒在摩擦表面发生了摩擦化学反应，生成了由B2O 3及FeB等组成的表面保护膜。

All 21 exons with flanking intronic sequences, as well as a 263 bp fragment of the 5" flanking region, of GARS-AIRS-GART gene, were screened in the same five populations, by the method of PCR-SSCP analysis, combined with sequencing reactions. We detected 10 SNPs, C-179T from 5" flanking region, A5669G form exon 3, C6545Afrom exon 4, A7777G from intron 4, G10854T, C10867T, G10898T from intron 6, A16197G from intron 11, C21228T from intron 14, and C29686T from exon 21. These ten polymorphic sites were nominated as GARS1, GARS2, GARS3, GARS4, GARS5, GARS6, GARS7, GARS8, GARS9, and GARS 10, respectively. The mutation of C D A at GARS3 was a non-synonymous mutation, wh

其中外显子4中的6545处的c~A突变导致对应的氨基酸序列中的第173位氨基酸发生变异：天冬氨酸一谷氨酸；10个SNP位点依次命名为：GARSI、GARSZ、GARS3、GARS4、GARSS、GARS6、GARS7、GARSS、GARSg、GARS 10；(2)10个SN'P位点在不同的鸡种中的基因型分布差异显著(P.05)，进一步的方差分析显示，GASRI位点以及GARS3位点与肌肉肌昔酸含量之间存在着显著的关联；(3)在所检测的5个群体中GARsl位

Effects of imposex on reproduction and population of gastropods .;2. Concentrations of heavy metals were determined in 17 species of benthic gastropods collected from the marine area near Dang Gang Islands of Pearl River estuary.

对分布于珠江口担杆岛附近海域的 17种底栖腹足类重金属的含量进行测定，结果显示：所有种类的整体软体组织中所测得的Cu、Zn、Pb、Ni和Sn的含量都低于香港和广东省对海产品管理的规定标准。

Don't sn iff at his effort. He's made great progress.

不要瞧不起他的努力，他已经取得了很大的进步。

You're silly to sn iff at such a good opportunity.

你真蠢，这么个好机会被你拒绝了。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。