1) helical cyclophane
螺旋环芳
1.
In this paper, (R)- and (S)-2,2'-diethynyl-1,1'-binaphthyl with highly stable chiral configurations were em- ployed as structural templates, and a new type of helical cyclophane compounds (R,P)-3 and (S,M)-3 were synthesized in enantiopure form by the introduction of benzyl sulfone through Sonogashira coupling reac- tion, followed by the treatment of disulfone with lithium diisopropylamide (LDA).
基于2,2'-二取代的联萘衍生物在手性构型上高度稳定的特点,分别从光学活性的(R)-和(S)-2,2'-二乙炔基-1,1'-联萘结构模板出发,通过Sonogashira偶连反应导入苄基砜,然后用二异丙基氨基锂(LDA)处理制得的联萘二砜成功地合成了一种新的螺旋环芳分子——对映异构体(R,P)-3和(S,M)-3。
2) bHLH
螺旋-环-螺旋
1.
Most silk gene transcription factors belong to HOX and FOX family,the bHLH transcription factors are uncommon.
通过基因芯片数据的检索,我们发现了在家蚕丝腺特异表达的并且含有bHLH结构域的转录因子——Bmdimm和Bmsage,bHLH(螺旋-环-螺旋)结构域能与DNA特异结合从而调控基因的表达,其中Bmdimm在后部丝腺特异表达,Bmsage在中部和后部丝腺特异表达。
3) spiral ring
螺旋环
1.
After the spiral rings are set up,the original tube boundary layer is destroyed.
研究结果表明:分叉管路分叉点为一扰动源,会诱导附加湍流;管内设置螺旋环后,原管壁边界层遭到破坏,管壁邻近的气流经过螺旋环时,发生边界层的分离,在分离区形成涡流,使气流湍流度增加;火焰阵面进入螺旋环扰动区后,发生扭曲并产生褶皱,火焰表面积显著增加,燃烧速率增大,并相应增加了释热速率,诱导激波的产生。
2.
A new intuitional diagram,spiral ring,is obtained by this method and its attributes were studied.
提出新的无向双环网络G(N;±r,±s)的直径求解法———分步法;并得到一种新的直观图———螺旋环,研究了螺旋环的性质;给出了无向双环网络的直径d(N;±r,±s)的显式公式;给出了N,s都固定的直径算法;在N固定,且2≤r
3.
A new diagram,spiral ring whose attributes were studied,was obtained by this method.
提出新的无向双环网络G(N;±1,±s)的直径求解法——分步法,并得到一种新的直观图——螺旋环,研究了螺旋环的性质,给出无向双环网络的直径d(N;±1,±s)的显式公式,给出N,s都固定的直径算法。
4) spiral-girdling
螺旋环剥
1.
Relationship of three Logan varieties between hastening blossom and soluble sugars in leaves and root were studied using spiral-girdling compared with ringing and non-treatment in order to solve late-fruiting and low yield caused by fall and winter shoot flushing.
本文针对龙眼北缘区幼树易抽晚秋梢和冬梢,影响花芽分化和开花结果,导致幼树投产迟、产量低等问题,采用螺旋环剥,对三个品种龙眼幼树进行试验研究,用环割及对照作比较,探索螺旋环剥的促花增产效应及其与叶片、根系可溶性糖含量变化的相关性。
5) relaxed helix
松环螺旋
6) spiral snap ring
螺旋卡环
补充资料：6,6-二甲基螺旋[二环[3.1.1]庚-2,2'-环氧乙烷]
CAS：6931-54-0
分子式：C10H16O
分子质量：152.23
沸点：98-100℃
中文名称：6,6-二甲基螺旋[二环[3.1.1]庚-2,2'-环氧乙烷]
英文名称：6,6-dimethyl-Spiro[bicyclo[3.1.1]heptane-2,2'-oxirane]
2,10-epoxy-pinan
beta-pinene epoxide
beta-pinene oxide
6,6-dimethyl-spiro(bicyclo(3.1.1)heptane-2'-oxirane)
分子式：C10H16O
分子质量：152.23
沸点：98-100℃
中文名称：6,6-二甲基螺旋[二环[3.1.1]庚-2,2'-环氧乙烷]
英文名称：6,6-dimethyl-Spiro[bicyclo[3.1.1]heptane-2,2'-oxirane]
2,10-epoxy-pinan
beta-pinene epoxide
beta-pinene oxide
6,6-dimethyl-spiro(bicyclo(3.1.1)heptane-2'-oxirane)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条