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It was found that there was a weak interaction between the C-H beside the carbonyl of FM and water.

研究发现羰基侧的H原子与水分子能形成C-H…O弱相互作用。

The MBOA content on the irradiated side of the coleoptile was 1.5 fold more than that on the shaded side.

在单侧蓝光作用下,胚芽鞘向光侧的生长抑制物质6甲氧基2苯并唑啉酮含量比背光侧多1.5倍。2。

In this method, we use the pooled correlogram based on human auditory model to extract the pitch of speech. An unsupervised lateral inhibitory network is used to get the peak position, which simulates the lateral inhibitory phenomenon in human auditory system.

采用基于人耳听觉模型的相关图来提取语音信号的基频,运用无监督的侧抑制神经网络来模拟人耳侧抑制属性进行基频检测,为了克服在低信噪比情况下侧抑制神经网络的误判问题,引入了相邻语音帧的语音基频的帧间约束。

A series of so-called hairy-rod fluorene-alt-benzene based polymers with different substituted groups on phenylene were synthesized through Suzuki route.

通过光谱、电化学和模拟计算等手段研究了苯环上不同性质的侧基取代芴苯聚合物的发光性质、电化学性质和溶剂化效应等,同时研究了侧基性质的变化对这些物理性质的影响规律。

Aves and teleost hemoglobins tend to select residues with larger side chains.

鸟类和硬骨鱼类血红蛋白倾向于选择侧链更大的残基,这些大侧链残基主要分布于分子表面和亚基之间的界面,导致四级结构的差异。

Based on this monomer, several novel polyimides bearing side chain s composed of cyano-biphenyl mesogenic end groups and hexylene spacer were prepared.

合成了一种含氰基联苯氧基侧链的二元胺单体,然后通过两步法热酰亚胺化工艺制备了新型的含氰基联苯基团侧链的聚酰亚胺。

Based on this monomer, several novel polyimides bearing side chains composed of cyano-biphenyl mesogenic end groups and hexylene spacer were prepared.

合成了一种含氰基联苯氧基侧链的二元胺单体,然后通过两步法热醯亚胺化工艺制备了新型的含氟基联苯基团侧链的聚醯亚胺。

Two sorts of polyacrylate derivates were designed and systhesized. One has benzoic acid groups linked to backbone via an alkyl chain of different length, the other has pyridyl groups at its side chain. On the basis of hydrogen-bonding between carboxyl and pyridyl groups, multilayer film was fabricated in mixed solvents. We studied the effect of either the composition of mixed solvents or length of alkyl chain on the structure of a multilayer film.

设计合成了两类聚丙烯酸酯类高分子,一种侧链含有通过不同个数的亚甲基和主链相连的苯甲酸基团,另一种侧链含有吡啶基团,基于羧基和吡啶基之间的氢键相互作用,在混合溶剂中制备了多层膜,并研究了溶剂组成与高分子侧链间隔基长度对多层膜结构的影响。

The complexing properties of compounds 10a, 10b, 11a and 11b toward alkali metal ions were studied by 〓H NMR titration, ESI-MS, UV-Vis spectra, Fluoresence spectra and liquid-liquid extraction. The results show:(1) the 1:1 complexes were formed.(2) The calix-crown 10a, 11a have a higher selectivity for Na〓 ions, whereas 10b, 11b for K〓 ions.(3) The complexing ability toward alkali metal ions was enhanced when the calix-crown have side arm carbonyl.(3) The coordination of alkali metal ions toward phenoxy, carbonyl and crown ethereal oxygens take place by rotation around the carbon-carbon bond of carbonyl and methylene.

六,用〓H NMR滴定,ESI-MS,UV-Vis,Fluorescence,液-液萃取实验研究了10a,10b,11a和11b对金属离子的配位性质,研究结果表明:1)杯芳烃冠醚衍生物同碱金属离子形成了1:1配合物,化合物10a、11a对Na〓具有较高的配位能力,化合物10b、11b对K〓具有较高的配位能力;2)在杯冠醚环的旁边引入带有羰基氧原子的基团作为侧臂参与配位可以加强对碱金属离子的配位能力;3)金属离子分别同苯酚氧,羰基氧,聚氧醚链氧发生了配位,配位过程中侧链基团涉及到了羰基碳与亚甲基碳的碳碳键的旋转过程。

Leaves grow in clusters; stipe chestnut brown, shiny ; blade pentagonal, Zhang Kuange about 5-7 cm, there are three separate base, or connected to cleft pinna feather, apical pinna nearly diamond-shaped, triangular lateral pinna, feather shaft under the lateral side of the sliver compared with the previous long, the base of one the longest; vein plume bifurcation; leaves dark green above, here are milky white or milk yellow powder.

叶簇生;叶柄栗棕色,有光泽;叶片五角形,长宽各约5—7厘米,有3片基部相连的或分离的羽裂的羽片,顶生羽片近菱形,侧生羽片三角形,羽轴下侧的裂片较上侧的长,基部1片最长;叶脉羽状分叉;叶片上面暗绿色,下面有乳白色或乳黄色粉末。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。