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Objective: Mannose-binding lectin is a plasma protein belonging to the family of collectins, composed of a N-terminal segment, helical coiled-coil hinge region, collagen-like stalk domain., and globular type C lectin domain or carbohydrate recognition domain. Full MBL biological function requires assembly to at least the tetrameric level.

目的:甘露聚糖结合凝集素(Mannose-binding lectin, MBL)是属于C型凝集素家庭胶原凝集素的一种血清蛋白,包括N末端区(N-terminal segment)、螺旋铰链区(helical coiled-coil hinge region)、胶原样区(collagen-like region,CRL)及球形C型凝集素区或糖识别区(carbohydrate recognition domain ,CRD)等4部分结构区域,四个亚单位的MBL形成有功能的多聚体。

MgO nanowires were synthesized at a lower temperature (600℃) by pulsed liquid injection MOCVD with β–diketonate Mg2 magnesium bis (2,2,6,6–tetramethyl- 3,5-heptanedionate, with formula Mg(C11H19O2)2 as precursor.

使用脉冲液滴注入式MOCVD,将Mg2(即:双(2,2,6,6,-四甲基-3,5-庚二酮酸)镁,其分子式是Mg(C11H19O2)2 )作为反应前驱体,在较低温度下(600℃)合成MgO纳米线。

Eu_2 (SO_4)3(H_2O) 8 (1) has been hydrothermally synthesized by Eu_2O_3, H_2O, tetramethylammonium hydroxide and H_2SO_4 at 180℃. Sm_2(SO_4)_3(H_2O)_8 (2) was obtained by using Sm_2O_3 instead of Eu_2O_3. These two compounds have the same inorganic topological framework.

以Eu_2O_3、H_2O、四甲基氢氧化铵、浓硫酸为反应物在180℃下水热法合成了二维层状的硫酸镧Eu_2(SO_4)3(H_2O)8 (1),以Sm_2O_3代替Eu2O3合成出了Sm_2(SO_4)_3(H_2O)_8 (2),两个化合物是同构体。

After treated with CuAz, the hydrogen from phenolic hydroxyl group in lignin was replaced by Cu from treated solution, being N-Cu-O complex, or two of the ammonia ligands of the tetrammine complex were replaced by copper-oxygen bonding from hydroxyl, being Cu-N-lignin complex.

在铜唑防腐剂处理后,木质素上酚羟基的H可以被Cu取代,形成&N-Cu-O&形式的络合物;或者处理液中四氨络合物中的2个氨配体被羟基取代,形成芳香族-铜络合物。

Six new ligands and 2 mononuclear,5 binuclear,8 tetranuclear complexes all of which are new havebeen synthesised and characterized by elementalanalysis,electric conductance and IR,UV-Vis spactr-oscopic methods.

本文主要研究多核配合物中的磁交换相互作用。共合成了6个新配体,2个单核。5个双核和8个四核配合物,并用元素分析,红外,紫外一可见。

We have studiedthe coordination water-substituted reactions and the phase-transferchemistry of dozens of trinuclear or tetranuclear sandwich-typePOMs and found that organic molecules or polymers can becoordinated to these polyanions after dehydration, thus more thanone hundred coordinated products are obtained, indicating that thesepolyanions are excellent ligands in organic solvents.

我们首次对夹心三、四核等几十种化合物中配位水进行了配位水取代反应及相转移化学研究,脱水后可配位有机分子或有机高分子,得到上百种配位产物,因此在有机溶剂中它们是优秀的配体。

Part 6 explores the reaction system containing O-phthalate, Mn〓 and α,α'-diimine, and yields six novel complexes 16~20 possessing binuclear and tetranuclear matello-crown aether as well as 1-D linear structures, indicating that O-phthalate is a potentially useful ligand to give manganese species in a discrete form.

研究了邻苯二甲酸/锰/双齿亚胺(2,2'-联吡啶和1,10-邻二氮杂菲)的反应体系,合成出6个新颖的双核、四金属冠醚和一维线性结构的化合物16至20,表明邻苯二甲酸是合成有限核数锰簇的有用配体。

All the ligands and complexes have been characterized with ~1H-NMR, MS and EA.X-Ray single crystal diffraction reveals that zirconium complex containing the tert-butyl substituted N_2O_2 ligand is an oxo- and hydroxyl-bridged dinuclear structure, which is possibly formed by partial hydrolysis of chlorides at one of the zirconium centers. A tetranuclear zirconium complex has been obtained and chacaterized, which is formed by complete hydrolysis of the chlorides at the zirconium centers.

通过研究配合物的单晶结构,我们发现叔丁基取代的不对称N_2O_2配体与ZrCl_4反应生成的锆配合物为氧桥和羟基桥连接的双核锆配合物,中间过程涉及单核锆配合物中氯原子部分水解,并得到氯原子部分水解的双核锆配合物和全部水(来源:8e6eAB67C论文网www.abclunwen.com)解的四核锆配合物的晶体结构,在晶体培养过程中发现双核锆配合物能够以手性自发拆分结晶析出。

The chiralMn complexes, especially Jacobsenscatalyst, display high enantioselectivity for asymmetric epoxidation of conjugated cis-di-, tri-and some tetrasubstituted prochiral alkenes in the NaClO biphasic system, but the epoxidationreaction generally requires a long reaction time even in the presence of an axial ligand.

在NaClO两相体系中,手性Mn配合物,尤其是Jacobsen催化剂,对共轭顺式二取代、三取代和部分四取代烯烃的不对称环氧化具有高的对映选择性,然而即使存在轴向配体,环氧化反应也通常需要长的反应时间。

The chiralMn complexes, especially Jacobsen\'scatalyst, display high enantioselectivity for asymmetric epoxidation of conjugated cis-di-, tri-and some tetrasubstituted prochiral alkenes in the NaClO biphasic system, but the epoxidationreaction generally requires a long reaction time even in the presence of an axial ligand.

在NaClO两相体系中,手性Mn配合物,尤其是Jacobsen催化剂,对共轭顺式二取代、三取代和部分四取代烯烃的不对称环氧化具有高的对映选择性,然而即使存在轴向配体,环氧化反应也通常需要长的反应时间。

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

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

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